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CCNA Compute Questions

75 of 230 questions · Page 2/4 · Compute · Answers revealed

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76

MCQeasy

Which Cisco UCS feature allows a failed blade server to be replaced with a new one without any reconfiguration, because all identity and configuration information is abstracted?

A.Firmware auto-sync

B.Service profile

C.Fabric failover

D.Dynamic vNIC connection policy

AnswerB

Service profiles provide stateless abstraction.

Why this answer

Stateless computing via service profiles abstracts the blade's identity (MAC, WWPN, UUID) so that replacing the hardware does not require reconfiguration.

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77

MCQmedium

An organization is deploying UCS B-series blades in a 5108 chassis connected to Fabric Interconnects A and B. Each blade has two vNICs. How should the vNICs be connected to the fabric to ensure maximum redundancy and bandwidth?

A.vNIC0 to FI A, vNIC1 to FI A via different ports

B.vNIC0 to FI A, vNIC1 to FI B, both active-active

C.vNIC0 to FI A, vNIC1 to FI B with active-standby

D.Both vNICs connected to Fabric Interconnect A with active-standby failover

AnswerB

Correct. This provides redundancy and load balancing across both fabrics.

Why this answer

For redundancy, vNICs should be connected to separate fabric interconnects (A and B) and active-active failover is recommended.

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78

MCQmedium

A UCS administrator wants to apply a consistent set of QoS policies across multiple UCS domains. Which tool should be used to centrally manage these policies?

A.UCS Central

B.UCS Manager

C.CIMC

D.HyperFlex Connect

AnswerA

Correct. UCS Central manages policies globally across domains.

Why this answer

UCS Central provides global policy management across multiple UCS domains, including QoS policies.

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79

Matchingmedium

Match each Cisco UCS component to its function.

Drag a concept onto its matching description — or click a concept then click the description.

Concepts

Matches

Unified I/O and management for server chassis

Connects blade servers to fabric interconnects

Virtual interface card supporting multiple adapters

Out-of-band management controller for UCS servers

Enclosure that houses blade servers and IOMs

Why these pairings

The correct matches are: Fabric Interconnect provides network connectivity and management; UCS Manager provides unified management; Blade Chassis houses servers and provides power/cooling. Common confusions include swapping functions with I/O Module or between chassis and interconnect.

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80

MCQmedium

A network engineer is configuring a Cisco UCS service profile for a blade server that must boot from a LUN on a SAN. Which boot policy type should be selected in the service profile?

A.SAN Boot Policy

B.iSCSI Boot Policy

C.LAN Boot Policy

D.Local Disk Boot Policy

AnswerA

SAN boot policy configures boot from Fibre Channel or FCoE storage.

Why this answer

Boot from SAN requires a SAN boot policy that specifies the WWPN of the target storage and the LUN to boot from, typically using a vHBA.

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81

Multi-Selectmedium

A company is planning to deploy Cisco Intersight to manage a hybrid environment including on-premises UCS domains and AWS EC2 instances. Which THREE of the following are required components for integrating AWS with Intersight?

Select 3 answers

A.An Intersight account with appropriate licenses

B.An Intersight Virtual Appliance deployed in AWS

C.A VPN tunnel between the on-premises network and AWS

D.An AWS IAM role with read-write access to EC2 and CloudFormation

E.Network connectivity from Intersight to the AWS public endpoints

AnswersA, D, E

An Intersight account is required to manage devices and use features.

Why this answer

A valid Intersight account with the appropriate licenses (e.g., Intersight Essentials or Premier) is required to enable the AWS integration feature. Without the proper license tier, the Intersight account cannot access the cloud orchestration or management capabilities needed to connect and manage external cloud providers like AWS.

Exam trap

Cisco often tests the misconception that a virtual appliance or VPN tunnel is required for cloud provider integration, but Intersight uses direct API calls over the internet, making network connectivity to AWS public endpoints the only network requirement.

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82

MCQhard

During a UCS firmware upgrade, the upgrade fails on a few servers in a chassis. The administrators notice that the management plane is still responsive, but the data plane is disrupted. What is the most likely cause?

A.The secondary Fabric Interconnect did not synchronize the firmware image before the upgrade.

B.The boot policy was changed during maintenance.

C.The server memory is exhausted due to high traffic.

D.The service profiles were not updated after the upgrade.

AnswerA

Incomplete sync causes differing firmware versions between FIs, leading to data plane issues.

Why this answer

The most likely cause is that the secondary Fabric Interconnect did not synchronize the firmware image before the upgrade. In a UCS domain, firmware upgrades are typically performed in a hitless manner by first upgrading the secondary Fabric Interconnect, which requires the firmware image to be synchronized from the primary. If synchronization fails, the secondary may boot with an incompatible or missing firmware, causing data plane disruption while the management plane remains responsive because the primary still handles management traffic.

Exam trap

Cisco often tests the misconception that a failed upgrade always results in a complete loss of connectivity, but the trap here is that the management plane can remain operational even when the data plane is disrupted due to a firmware synchronization failure on the secondary Fabric Interconnect.

How to eliminate wrong answers

Option B is wrong because changing the boot policy during maintenance would affect the server's boot order or boot parameters, not cause a partial failure where management is up but data plane is down; boot policy changes do not directly impact firmware upgrade synchronization. Option C is wrong because server memory exhaustion due to high traffic would manifest as performance degradation or crashes, not a specific scenario where management plane is responsive and data plane is disrupted after a firmware upgrade; memory exhaustion is unrelated to firmware image synchronization. Option D is wrong because service profiles not being updated after the upgrade would cause configuration mismatches or policy application failures, but the immediate symptom of management plane up and data plane down points to a firmware image synchronization issue on the Fabric Interconnect, not a service profile update problem.

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83

MCQhard

A HyperFlex cluster is configured with RF3 and has 6 nodes. If one node fails completely, how many nodes are still required to maintain data availability and cluster quorum?

A.3 nodes

B.4 nodes

C.5 nodes

D.6 nodes

AnswerB

Quorum requires >50% of total nodes; with 6 nodes, quorum is 4. After one failure, 5 remain, so quorum is maintained. But if the question meant minimum nodes to keep cluster operational, it's 4 (since 5 > 4). Actually the question is ambiguous: 'still required' could mean after the failure, how many are needed to continue? After 1 failure, 5 are still up, so 5 nodes are operational. But the answer choices are 3,4,5,6. The correct interpretation: with 6 nodes, quorum is 4, so after 1 failure, 5 nodes remain, which is sufficient. But the question might be asking the minimum number of nodes that must remain to avoid quorum loss. That is 4. So answer B is correct.

Why this answer

With RF3, data is available as long as at least one copy remains. However, cluster quorum requires more than half of the nodes to be operational. For a 6-node cluster, quorum is 4 nodes (majority).

After 1 failure, 5 nodes remain, which is >3, so quorum is maintained. However, the minimum to keep data available with RF3 is 3 nodes (since 3 copies exist, losing one still leaves 2). But cluster quorum is the stricter requirement: with 6 nodes, quorum is 4.

So after 1 failure, 5 nodes are still up, satisfying quorum.

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84

MCQhard

A Cisco HyperFlex cluster is experiencing performance issues during peak hours. The cluster uses a 4-node all-flash configuration. The engineer notices that the vSphere DRS cluster is heavily imbalanced. Which HyperFlex feature should be used to improve performance by balancing the storage load across nodes?

A.Enable Storage DRS on the HyperFlex datastore

B.Enable the IOPS-based workload rebalancing feature

C.VM vMotion to move VMs to less busy nodes

D.Adjust the deduplication and compression settings to reduce write amplification

AnswerB

This feature automatically rebalances data across nodes based on IOPS, improving performance.

Why this answer

The IOPS-based workload rebalancing feature in Cisco HyperFlex automatically redistributes storage I/O load across cluster nodes based on real-time IOPS metrics. This directly addresses the performance issue during peak hours by ensuring no single node becomes a storage bottleneck, which is the root cause of the vSphere DRS imbalance in a HyperFlex environment.

Exam trap

Cisco often tests the distinction between compute load balancing (vSphere DRS/VM vMotion) and storage I/O load balancing (HyperFlex IOPS rebalancing), leading candidates to mistakenly choose VM vMotion when the issue is storage-side, not compute-side, contention.

How to eliminate wrong answers

Option A is wrong because Storage DRS operates at the vSphere datastore level and manages VM placement across datastores, not the underlying HyperFlex storage node load; HyperFlex presents a single distributed datastore, making Storage DRS irrelevant for node-level I/O balancing. Option C is wrong because VM vMotion moves VMs between ESXi hosts to balance compute load, but it does not affect the storage I/O distribution across HyperFlex nodes, which is the actual performance bottleneck. Option D is wrong because adjusting deduplication and compression settings reduces write amplification and improves storage efficiency, but it does not dynamically rebalance existing I/O load across nodes during peak hours.

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85

Multi-Selectmedium

Which THREE of the following are valid UCS Manager RBAC roles?

Select 5 answers

A.Storage Administrator

B.Network Administrator

C.UCS Administrator

D.Operations Administrator

E.Server Administrator

AnswersA, B, C, D, E

Storage Administrator is a built-in UCS Manager RBAC role responsible for storage-related configurations.

Why this answer

All five options are built-in RBAC roles in UCS Manager. The roles are: Storage Administrator, Network Administrator, UCS Administrator, Operations Administrator, and Server Administrator. Each role provides specific administrative privileges within the UCS environment.

Exam trap

Candidates might think only three roles are valid, but all five are built-in RBAC roles in UCS Manager. The question may mislead by asking for three, but all options are correct.

How to eliminate wrong answers

Option A is wrong because 'Storage Administrator' is not a valid built-in RBAC role in UCS Manager; the correct role for storage management is 'Storage Administrator' is actually a valid role in some contexts, but in UCS Manager the built-in storage-related role is 'Storage Administrator' is not listed as a default role—the default roles include 'Server Administrator', 'Network Administrator', 'UCS Administrator', and 'Operations Administrator' is also a default role, but the question asks for three valid roles, and 'Storage Administrator' is not a default role in UCS Manager; it is a custom role that can be created but is not one of the predefined roles. Option D is wrong because 'Operations Administrator' is a valid UCS Manager RBAC role, but the question requires selecting exactly three correct options, and since 'Operations Administrator' is indeed a default role, the correct set includes B, C, and E, making D incorrect in this context because it is not among the three correct answers—the trap is that 'Operations Administrator' is a valid role but not one of the three listed as correct in the answer key.

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86

MCQhard

An engineer is configuring PXE boot for a UCS B-series blade. The blade's vNIC is associated with a VLAN that has no IP helper address configured. What is required to allow the blade to obtain an IP address from a DHCP server on a different subnet?

A.Configure a static IP address in the service profile

B.Enable DHCP snooping on the Fabric Interconnect

C.Add an IP helper address on the VLAN interface in the upstream switch

D.Use a local DHCP server on the same VLAN

AnswerC

IP helper relays DHCP broadcasts to the DHCP server.

Why this answer

PXE boot requires DHCP. Without IP helper, broadcast DHCP requests cannot cross subnets. A DHCP relay or IP helper is needed.

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87

MCQmedium

A data center administrator reports that traffic from a specific UCS server is not flowing through the expected Fabric Interconnect (FI) A. The pin group is configured, but traffic is still sent to FI B. What should the administrator check?

A.Verify that the server is associated with the correct service profile.

B.Reboot the Fabric Interconnect.

C.Check if the pin group is deleted.

D.Ensure the vNIC's fabric ID is set to match the pin group's preferred fabric.

AnswerD

The vNIC must have the fabric ID set to force traffic to the desired FI.

Why this answer

The pin group configuration determines which Fabric Interconnect a vNIC should use for upstream traffic. If the vNIC's fabric ID is not set to match the pin group's preferred fabric, the server will ignore the pin group and send traffic to the other FI. Option D is correct because the fabric ID mismatch causes the pin group to be ineffective, and verifying this alignment ensures traffic flows through the expected FI A.

Exam trap

Cisco often tests the subtle distinction between a pin group being configured and the vNIC's fabric ID being misaligned, leading candidates to assume the pin group is automatically applied without checking the vNIC-level fabric assignment.

How to eliminate wrong answers

Option A is wrong because the service profile association controls the server's identity and policies, not the specific fabric path selection for traffic; a correctly associated service profile can still have a vNIC fabric ID mismatch. Option B is wrong because rebooting the Fabric Interconnect is a disruptive action that does not address the configuration mismatch between the vNIC fabric ID and the pin group's preferred fabric. Option C is wrong because the pin group is confirmed to be configured; checking if it is deleted is irrelevant when the issue is that the vNIC is not honoring the existing pin group due to fabric ID mismatch.

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88

MCQhard

A UCS C-series server is deployed in a standalone environment. The administrator needs to update the server's firmware remotely. Which CIMC feature should be used?

A.Virtual KVM

B.Firmware Update page in CIMC

C.Virtual Media

D.UCS Manager

AnswerB

CIMC has a dedicated Firmware Update page for remote update.

Why this answer

CIMC provides remote firmware update capability through its web interface or CLI.

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89

MCQmedium

Which UCS C-Series management mode allows the server to be managed as part of a UCS domain using service profiles, while still retaining the ability to use CIMC for direct out-of-band management?

A.Intersight Managed mode

B.UCS Managed mode

C.Direct Connect mode

D.Cisco IMC Supervisor mode

AnswerB

Correct. The server is managed by UCS Manager with CIMC retained.

Why this answer

When a C-series server is adopted into UCS Manager, it can use service profiles but also retains its CIMC for direct management. This is the managed mode, as opposed to standalone (CIMC-only) mode.

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90

MCQmedium

A data center engineer is deploying a new application on Cisco UCS Manager. The application requires consistent low-latency access to storage. The engineer decides to use SAN boot from a Fibre Channel SAN. Which configuration change is necessary on the UCS service profile to enable SAN boot?

A.Enable VIF (Virtual Interface) on the vHBA

B.Configure a QoS policy for the vHBA

C.Set the vNIC to use dynamic MAC address

D.Assign a persistent WWPN to the vHBA

AnswerD

Persistent WWPN ensures the SAN target recognizes the server.

Why this answer

To enable SAN boot from a Fibre Channel SAN, the UCS service profile must assign a persistent WWPN to the vHBA. The WWPN is used by the Fibre Channel fabric to identify the initiator and to zone the storage LUNs; a persistent WWPN ensures that after a server reboot or vHBA reconfiguration, the same WWPN is presented to the SAN, allowing the boot LUN to remain accessible. Without a persistent WWPN, the vHBA would use a dynamically generated WWPN, which would break the SAN zoning and boot path.

Exam trap

Cisco often tests the distinction between vNIC (Ethernet) and vHBA (Fibre Channel) configurations, and the trap here is that candidates confuse MAC address persistence (for vNICs) with WWPN persistence (for vHBAs), leading them to incorrectly select Option C.

How to eliminate wrong answers

Option A is wrong because VIF (Virtual Interface) is a concept related to FCoE (Fibre Channel over Ethernet) and is not required for SAN boot over native Fibre Channel; enabling VIF on the vHBA is not a necessary configuration for SAN boot. Option B is wrong because a QoS policy for the vHBA controls traffic prioritization and bandwidth, but it does not affect the ability to boot from a SAN; QoS is optional and unrelated to SAN boot functionality. Option C is wrong because setting the vNIC to use a dynamic MAC address is relevant for Ethernet networking, not for Fibre Channel SAN boot; the vNIC is used for IP/Ethernet traffic, while SAN boot relies on the vHBA and its WWPN.

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91

MCQeasy

Which statement describes how firmware management works for UCS B-Series blade servers?

A.Firmware must be manually upgraded on each blade individually

B.Firmware is managed through host firmware packages in service profiles

C.Firmware is automatically updated via Cisco TAC

D.Firmware is stored on the fabric interconnect and loaded directly to the server

AnswerB

Host firmware packages define the firmware versions for each server

Why this answer

In Cisco UCS Manager, firmware for B-Series blade servers is managed through host firmware packages that are included in service profiles. These packages define the exact firmware versions for components like the BIOS, adapter, storage controller, and CIMC, and are automatically applied to the blade when the service profile is associated. This ensures consistent firmware levels across blades without manual intervention on each server.

Exam trap

Cisco often tests the misconception that firmware is applied directly from the fabric interconnect, when in fact it is staged locally on the blade and applied during reboot, and that manual per-blade updates are required in UCS Manager, which is incorrect due to the service profile abstraction.

How to eliminate wrong answers

Option A is wrong because firmware is not manually upgraded on each blade individually; UCS Manager automates firmware updates via service profile associations and host firmware packages. Option C is wrong because firmware is not automatically updated via Cisco TAC; TAC provides support but does not push firmware updates, and updates are initiated by the administrator through UCS Manager or Intersight. Option D is wrong because firmware is not stored on the fabric interconnect and loaded directly to the server; firmware images are stored in the UCS Manager repository and are applied to the blade's local storage or adapter memory during the boot process, not streamed directly from the FI.

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92

MCQeasy

Which HyperFlex replication factor ensures that data is stored on at least three nodes, providing higher data protection?

A.RF1

B.RF2

C.RF3

D.RF4

AnswerC

RF3 stores three copies, protecting against two node failures.

Why this answer

Replication Factor 3 (RF3) stores three copies of data across the cluster, offering protection against two concurrent node failures.

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93

MCQeasy

A data center administrator needs to deploy a new blade server in a Cisco UCS chassis. The server must automatically inherit the correct service profile based on its slot location. Which feature should be configured?

A.Static service profile association

B.Qualifier-based service profile association

C.Service profile template with pool

D.Default service profile

AnswerB

Uses server attributes like slot ID to automatically map a profile, enabling zero-touch deployment.

Why this answer

Qualifier-based service profile association allows a service profile to be automatically applied to a blade server based on its slot location within the UCS chassis. This is achieved by configuring a qualifier that matches the chassis ID and slot number, enabling automatic inheritance without manual intervention.

Exam trap

The trap here is that candidates often confuse qualifier-based association with static association or service profile templates, mistakenly thinking that a template alone can automatically assign profiles based on location without a qualifier.

How to eliminate wrong answers

Option A is wrong because static service profile association requires manual assignment of a service profile to a specific server and does not support automatic inheritance based on slot location. Option C is wrong because a service profile template with pool is used for creating service profiles from a template with a pool of names or UUIDs, but it does not automatically associate profiles based on slot location. Option D is wrong because a default service profile is a fallback profile applied when no other profile is associated, but it is not designed to match specific slot locations for automatic inheritance.

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94

MCQhard

A large enterprise is using Cisco UCS Manager to manage a chassis with 8 B-Series blades. The environment uses a combination of Ethernet and Fibre Channel traffic. The UCS fabric interconnect (FI) is configured in end-host mode with two uplinks to the core network. Recently, the engineering team deployed a new service profile for a high-performance computing workload that requires 40Gbps Ethernet per vNIC and 16Gbps Fibre Channel per vHBA. The server has two vNICs and two vHBAs. After deployment, the server's OS shows only 10Gbps connectivity on each vNIC. The engineer checks UCS Manager and sees that the vNIC templates are set to '10 Gbps' and the vHBA templates are set to '16 Gbps' but the actual link speed for vNICs is only 10Gbps. The fabric interconnect ports are configured as 40Gbps uplinks. The engineer has verified that the server adapter supports 40Gbps. What is the most likely cause of the speed mismatch?

A.The fabric interconnect uplinks are configured as 40Gbps, but the port channel is not configured correctly, causing speed negotiation to fail.

B.The vNIC template used in the service profile specifies a requested speed of '10 Gbps' instead of '40 Gbps'.

C.The server's adapter policy is set to 'Windows' mode, which limits Ethernet speeds to 10Gbps.

D.The QoS policy applied to the vNIC limits the bandwidth to 10Gbps.

AnswerB

The vNIC template's speed setting determines the allocated speed; it must be set to 40Gbps.

Why this answer

The vNIC template in the service profile defines the requested speed for the virtual NIC. If the template is set to '10 Gbps', the UCS Manager will allocate only 10 Gbps of bandwidth per vNIC, regardless of the physical adapter's capability or the uplink speed. Since the engineer verified the adapter supports 40 Gbps and the uplinks are 40 Gbps, the mismatch is directly caused by the template configuration.

Exam trap

Cisco often tests the misconception that the physical adapter or uplink speed automatically determines the vNIC speed, when in fact the vNIC template's requested speed is the controlling parameter in UCS Manager.

How to eliminate wrong answers

Option A is wrong because the fabric interconnect uplinks are configured as 40 Gbps and the issue is not related to port channel misconfiguration; speed negotiation for vNICs is independent of uplink port channels. Option C is wrong because the server adapter policy (e.g., 'Windows' mode) does not limit Ethernet speeds to 10 Gbps; it affects driver behavior and failover settings, not link speed. Option D is wrong because a QoS policy applied to a vNIC can shape or limit bandwidth, but the question states the vNIC templates are set to '10 Gbps', and the OS shows 10 Gbps connectivity; QoS policies typically enforce maximum bandwidth after the link is established, not the negotiated link speed.

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95

MCQhard

A HyperFlex cluster uses RF2 and consists of 5 nodes. One node fails. Data is re-replicated to the remaining nodes. After re-replication, what is the largest number of additional node failures that can occur without data loss?

A.0

B.2

C.1

D.3

AnswerC

RF2 allows one failure; after re-replication, still one.

Why this answer

With RF2 (two copies), the cluster can tolerate one failure. After a failure and re-replication, the cluster has 4 nodes. If one more node fails, data might still be available if the surviving node holds a copy.

However, with RF2, a second failure could lead to data loss if both copies are lost. The maximum tolerable is one additional failure, because with two failures, some data may have only one copy left (if the second failure affects the only remaining copy). Actually, with RF2, you can tolerate one failure.

After re-replication, same tolerance: one more failure. So answer is 1.

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96

MCQmedium

An engineer is deploying a UCS B-Series blade server and needs to configure connectivity to the SAN. Which component is responsible for the physical connection between the blade and the Fabric Interconnect?

A.Mezzanine adapter on the blade

B.I/O Module (IOM) in the chassis

C.Fabric Extender (FEX) on the Fabric Interconnect

D.Cisco Integrated Management Controller (CIMC)

AnswerB

The IOM provides the physical uplink to the Fabric Interconnect.

Why this answer

The I/O Module (IOM) in the UCS chassis connects blade servers to the Fabric Interconnects via server ports.

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97

MCQmedium

Refer to the exhibit. A UCS administrator applies a service profile with this boot policy to a blade. The blade boots from the SAN LUN successfully. However, after a reboot due to a firmware update, the blade boots from the local disk instead of the SAN. What is the most likely reason?

A.The WWPN of the SAN target is incorrect.

B.The SAN target LUN ID changed after the firmware update.

C.The boot order has local disk before the SAN target.

D.The local disk was not present at initial association.

AnswerC

Exhibit shows local-disk listed first.

Why this answer

The most likely reason is that the boot order in the service profile's boot policy lists the local disk before the SAN target. After a firmware update, the UCS Manager re-evaluates the boot policy, and if the local disk is present and has a higher priority, the blade will boot from it instead of the SAN LUN. The initial successful boot from SAN occurred because the local disk was not present at that time, but after the reboot, the local disk became available and took precedence.

Exam trap

The trap here is that candidates often assume a firmware update changes SAN parameters (like WWPN or LUN ID), but Cisco tests the concept that the boot order policy itself, not the SAN configuration, determines which device boots first when multiple bootable devices are present.

How to eliminate wrong answers

Option A is wrong because an incorrect WWPN of the SAN target would prevent any successful boot from the SAN LUN, not just after a reboot. Option B is wrong because a change in the SAN target LUN ID after a firmware update is unlikely and would cause a persistent boot failure, not a switch to local disk. Option D is wrong because the local disk not being present at initial association explains why the SAN boot worked initially, but it does not explain why the boot order policy itself would change; the boot order is static unless modified.

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98

MCQmedium

A UCS B-series blade is configured to boot from SAN using a vHBA that connects to a Fibre Channel SAN. The storage administrator reports that the LUN is not being presented to the blade. Which component in the UCS domain is responsible for mapping the vHBA WWPN to the physical Fibre Channel interface?

A.IOM (FEX)

B.CIMC

C.Fabric Interconnect

D.UCS Manager

AnswerC

The FI maps the vHBA WWPN to the physical Fibre Channel interface.

Why this answer

In UCS, the Fabric Interconnect (FI) acts as a Fibre Channel forwarder (FCF) or NPV switch. The vHBA's WWPN is assigned by UCS Manager and the FI maps it to the appropriate uplink Fibre Channel interface. The UCS Manager itself configures this mapping, but the actual mapping occurs on the FI.

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99

MCQmedium

A UCS administrator needs to replace a failed blade server in a chassis with a new blade. The new blade must automatically receive the same configuration as the failed one. Which feature enables this?

A.Chassis management controller failover

B.Automatic firmware synchronization

C.UCS Manager auto-discovery

D.Stateless computing using service profiles

AnswerD

Service profiles abstract hardware identity, enabling seamless replacement.

Why this answer

Stateless computing via service profiles allows a new blade to be assigned the same profile, automatically applying the configuration.

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100

MCQhard

A data center engineer is designing a UCS Manager solution that requires VLAN segmentation across multiple fabric interconnects. The network team requires that each VLAN is assigned a unique native VLAN ID per fabric. Which pool configuration supports this requirement?

A.Use derived VLAN pools based on chassis location

B.Create separate VLAN pools for each fabric with non-overlapping ranges

C.Create a single VLAN pool that includes all required VLANs

D.Configure VLANs directly in the service profile using inline pools

AnswerB

Separate pools enable unique native VLAN IDs per fabric

Why this answer

UCS Manager allows separate VLAN pools to be assigned per fabric interconnect, enabling unique native VLAN IDs per fabric. By creating non-overlapping VLAN pools for each fabric, the engineer ensures that each fabric has its own native VLAN ID without conflict, meeting the requirement for VLAN segmentation across multiple fabric interconnects.

Exam trap

Cisco often tests the misconception that a single VLAN pool can be used for both fabrics, but the requirement for unique native VLAN IDs per fabric demands separate pools with non-overlapping ranges to avoid conflict.

How to eliminate wrong answers

Option A is wrong because derived VLAN pools based on chassis location do not provide per-fabric native VLAN differentiation; they are used for chassis-specific VLAN assignment, not for separating VLANs across fabrics. Option C is wrong because a single VLAN pool that includes all required VLANs would assign the same native VLAN ID to both fabrics, violating the requirement for unique native VLAN IDs per fabric. Option D is wrong because configuring VLANs directly in the service profile using inline pools does not allow per-fabric native VLAN assignment; inline pools are used for individual service profiles and cannot enforce separate native VLAN IDs across fabrics.

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101

MCQmedium

Refer to the exhibit. A UCS administrator has configured vNIC templates as shown. Both Fabric Interconnects have identical uplink configurations. The vNIC templates have 'Failover: Enabled'. However, when Fabric Interconnect A fails, servers using vNIC-A do not fail over to Fabric Interconnect B. What is the most likely cause?

A.A pin group is configured that forces traffic to Fabric Interconnect A.

B.The native VLAN (10) is not allowed on Fabric Interconnect B's trunk.

C.The uplink interfaces are configured with 'spanning-tree port type edge trunk', which blocks failover traffic.

D.The server's service profile does not include a secondary vNIC for Fabric B.

AnswerD

Failover requires a secondary vNIC on the other fabric in the same service profile.

Why this answer

The server's service profile must include both a primary vNIC (for Fabric Interconnect A) and a secondary vNIC (for Fabric Interconnect B) to enable failover. The 'Failover: Enabled' setting on the vNIC template only allows the vNIC to use the other fabric's uplink if a secondary vNIC is explicitly defined in the service profile; without it, the vNIC is pinned to its original fabric and cannot fail over.

Exam trap

Cisco often tests the misconception that enabling 'Failover' on a vNIC template alone is sufficient for failover, when in reality a secondary vNIC must be explicitly added to the service profile to provide the alternate fabric path.

How to eliminate wrong answers

Option A is wrong because a pin group that forces traffic to Fabric Interconnect A would prevent failover, but the question states that vNIC templates have 'Failover: Enabled', and a pin group would override that setting only if explicitly configured; the scenario does not mention any pin group, so this is an unlikely cause. Option B is wrong because the native VLAN (10) not being allowed on Fabric Interconnect B's trunk would cause connectivity issues for VLAN 10 traffic, but it would not prevent the vNIC from failing over to Fabric B's uplinks; failover is a fabric-level path selection, not a VLAN-specific behavior. Option C is wrong because 'spanning-tree port type edge trunk' (PortFast trunk) does not block failover traffic; it enables faster convergence by skipping STP on the uplink ports, and failover traffic is not blocked by this configuration.

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102

MCQeasy

What is the primary purpose of Cisco UCS service profiles?

A.To manage interconnections between Fabric Interconnects

B.To monitor environmental sensors in the chassis

C.To provide firmware management for all chassis components

D.To enable hardware abstraction and stateless computing

AnswerD

Service profiles capture identity and configuration, making servers stateless.

Why this answer

Service profiles enable hardware abstraction, allowing blade or rack server replacement without reconfiguration by defining compute, network, and storage identities in software.

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103

MCQmedium

A data center administrator is troubleshooting slow storage performance on a UCS B-Series blade server. The server is connected to a Cisco UCS 6300 Series Fabric Interconnect and uses local SAS drives. The administrator checks the UCS Manager and sees that the storage adapter has a driver version that is not recommended. What is the most likely impact of using a non-recommended driver version?

A.Degraded storage performance or instability

B.Loss of redundancy on the fabric interconnect

C.Inability to boot the server

D.Increased security vulnerabilities

AnswerA

Non-recommended drivers are not validated and can cause performance issues or system instability.

Why this answer

Using a non-recommended driver version for the storage adapter in a UCS B-Series blade server can lead to degraded storage performance or system instability. Cisco validates specific driver versions for compatibility with the UCS 6300 Series Fabric Interconnect and local SAS drives; deviations may cause suboptimal I/O handling, increased latency, or unexpected errors. This is a common issue in compute environments where driver- firmware mismatches affect storage throughput.

Exam trap

Cisco often tests the distinction between a 'non-recommended' driver (which causes performance or stability issues) versus a 'non-supported' driver (which could cause boot failure or complete non-functionality), tempting candidates to overestimate the impact.

How to eliminate wrong answers

Option B is wrong because loss of redundancy on the fabric interconnect is typically caused by misconfigured port channels, link failures, or fabric-level issues, not by a storage adapter driver version. Option C is wrong because while a severely incompatible driver could prevent boot, the question specifies a 'non-recommended' driver, which usually causes performance issues rather than complete boot failure; UCS servers can still boot with non-optimal drivers. Option D is wrong because driver versions primarily affect functionality and performance, not security posture; security vulnerabilities are addressed through firmware and software patches, not driver version recommendations.

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104

MCQmedium

An engineer is configuring a UCS service profile for a blade server that will boot from local disk. However, the engineer wants to ensure that if the local disk fails, the server will attempt to boot from the SAN. Which boot policy setting should be used?

A.Set the boot order to SAN first, then local disk

B.Configure local disk as the only boot device

C.Set local disk as primary and SAN as secondary

D.Use PXE boot as the primary

AnswerC

This provides the desired fallback order.

Why this answer

UCS boot policies allow setting the boot order. To attempt local disk first and then SAN if local fails, the policy should have local disk as the primary and SAN as the secondary boot device.

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105

Multi-Selecteasy

Which two features are provided by Cisco IMC on UCS C-series rack servers? (Choose two.)

Select 2 answers

A.Fabric Interconnect management

B.Virtual media mounting

C.Service profile creation

D.Remote KVM console access

E.HyperFlex cluster management

AnswersB, D

Correct. Virtual media allows mounting ISO images remotely.

Why this answer

CIMC provides out-of-band management including KVM console and virtual media for remote OS installation.

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106

MCQeasy

An enterprise requires that all virtual machines using a specific service profile must have the same MAC address pool. Which policy should be configured on the service profile template?

A.MAC Pool Policy

B.UUID Pool Policy

C.Server Pool Policy

D.WWPN Pool Policy

AnswerA

MAC pool defines the range and is attached to the vNIC in the profile.

Why this answer

A MAC Pool Policy is correct because it defines a range of MAC addresses that are dynamically assigned to virtual network adapters in a service profile. When multiple VMs use the same service profile template, configuring a MAC Pool Policy ensures all VMs derive their MAC addresses from the same pool, guaranteeing consistency and avoiding address conflicts across the cluster.

Exam trap

The trap here is that candidates confuse MAC Pool Policy with UUID Pool Policy, assuming both handle identity assignment, but only MAC Pool Policy controls the Ethernet address pool for virtual NICs.

How to eliminate wrong answers

Option B is wrong because a UUID Pool Policy assigns unique identifiers to virtual machines, not MAC addresses, and does not control network interface addressing. Option C is wrong because a Server Pool Policy manages physical server selection for service profile association, not MAC address assignment. Option D is wrong because a WWPN Pool Policy assigns World Wide Port Names for Fibre Channel adapters, not Ethernet MAC addresses.

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107

MCQhard

Refer to the exhibit. A UCS manager profile is configured with two vNICs on separate fabrics. The server is failing to communicate with the default gateway on VLAN 100. Both vNICs are up. What is the most likely issue?

A.The MAC pool is exhausted

B.The VLAN 100 is not defined on the fabric interconnects

C.The boot policy is missing

D.The server is using active-standby NIC teaming and the active vNIC is on a fabric that does not have the VLAN

AnswerB

If VLAN 100 is absent on the FIs, traffic cannot be forwarded to the gateway.

Why this answer

The most likely issue is that VLAN 100 is not defined on the fabric interconnects. In UCS Manager, even if the vNICs are up and the MAC pool is available, the server cannot communicate with the default gateway if the VLAN is not present on the fabric interconnect's VLAN database. The fabric interconnect must have VLAN 100 created and assigned to the appropriate uplink ports or port-channels for traffic to be forwarded.

Exam trap

Cisco often tests the misconception that a vNIC being 'up' implies full Layer 2 connectivity, when in fact the VLAN must be defined on the fabric interconnect for traffic to be switched.

How to eliminate wrong answers

Option A is wrong because a MAC pool exhaustion would prevent vNICs from being assigned a MAC address, but both vNICs are up, indicating MAC addresses are already assigned. Option C is wrong because the boot policy determines the boot order and storage connectivity, not Layer 2/3 network communication to a default gateway. Option D is wrong because active-standby NIC teaming (e.g., using MAC pinning or vPC) would still allow communication if the active vNIC is on the fabric with VLAN 100; the issue is that VLAN 100 is missing on both fabrics, not a teaming misconfiguration.

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108

Multi-Selecthard

An engineer is configuring a UCS service profile for a blade server that will be used for a critical application. The application requires high availability for both network and storage connectivity. Which three policies should be configured in the service profile to meet these requirements? (Choose three.)

Select 3 answers

A.IPMI policy

B.SAN connectivity policy

C.Boot policy

D.VLAN policy

E.Power policy

AnswersB, C, D

Defines vHBAs and WWPNs for storage connectivity.

Why this answer

For HA, the service profile should use a VLAN policy for network connectivity, a SAN connectivity policy for storage, and a boot policy that defines multiple paths. Additionally, a vNIC/vHBA placement policy can enable failover, but the core three are VLAN, SAN, and boot policies.

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109

MCQmedium

In a UCS domain, fabric interconnects are deployed in an end-host mode. What is a characteristic of this mode?

A.The FI must be configured with Spanning Tree Protocol

B.The FI uses N-Port Virtualization (NPV) to reduce the number of uplinks needed

C.The FI supports only Fibre Channel traffic

D.The FI operates as a standard Layer 2 switch

AnswerB

NPV allows the FI to multiplex multiple server connections over fewer uplink ports.

Why this answer

End-host mode (also called N-Port Virtualization) allows the FI to act as a switch that presents server vNICs as if they were directly connected to the upstream network, simplifying VLAN/VXLAN configurations.

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110

Multi-Selectmedium

A UCS administrator needs to implement boot-from-SAN for a B-series blade. Which two components must be properly configured in the service profile? (Choose two.)

Select 2 answers

A.vHBA

B.IPMI policy

C.Boot policy

D.SCSI policy

E.vNIC

AnswersA, C

Correct. vHBA provides Fibre Channel connectivity to SAN storage.

Why this answer

Boot from SAN requires a vHBA for SAN connectivity and a boot policy that specifies the SAN target.

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111

MCQeasy

Refer to the exhibit. The blade server is unassociated. Which action is required to assign a service profile to this server?

A.Configure the server's BIOS settings

B.Create a service profile and associate it with the server

C.Create a boot policy

D.Create a vNIC template

AnswerB

Directly associates the server with a profile, enabling configuration.

Why this answer

A service profile defines the server identity, firmware, policies, and connectivity settings for a UCS blade server. When a server is unassociated, you must create a service profile and then associate it with the server to apply those configurations and bring the server into operation.

Exam trap

Cisco often tests the distinction between creating a component policy (like boot policy or vNIC template) versus creating and associating the service profile itself, leading candidates to mistake a sub-component for the primary action.

How to eliminate wrong answers

Option A is wrong because BIOS settings are configured within the service profile or BIOS policy, not as a standalone prerequisite for association. Option C is wrong because a boot policy is a component that can be included in a service profile, but creating one alone does not assign a service profile to the server. Option D is wrong because a vNIC template is used to define network interface properties within a service profile, but it is not the action required to associate a service profile with the server.

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112

MCQmedium

An engineer is troubleshooting a UCS B-Series server that fails to boot from SAN. The SAN boot LUN is correctly zoned and presented. The service profile has WWPNs configured. What is a likely cause?

A.Server firmware mismatch

B.Missing vNIC template

C.VLAN mismatch

D.Incorrect boot policy order

AnswerD

The server will attempt boot devices in the order defined; if SAN is not first, it may fail.

Why this answer

The SAN boot LUN is correctly zoned and presented, and the WWPNs are configured in the service profile, so the connectivity and identity are set. However, if the boot policy order is incorrect (e.g., the SAN boot target is listed after a local disk or another boot device), the server will attempt to boot from the wrong device first and fail to boot from the SAN. The boot policy defines the sequence of boot devices, and a misconfigured order is a common cause of boot failures in UCS B-Series.

Exam trap

Cisco often tests the misconception that SAN boot failures are always due to zoning or WWPN misconfiguration, when in fact the boot policy order is a separate, critical setting that must be correctly configured in the service profile.

How to eliminate wrong answers

Option A is wrong because a server firmware mismatch would typically cause compatibility issues or boot failures at a lower level, but the question states the LUN is correctly zoned and presented, and the issue is specifically about boot order, not firmware version mismatch. Option B is wrong because a missing vNIC template would prevent the vNIC from being created in the service profile, but the service profile already has WWPNs configured, implying the vNIC is present. Option C is wrong because a VLAN mismatch would affect network connectivity after boot, not the ability to boot from SAN, which uses Fibre Channel (FC) zoning, not VLANs.

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113

MCQhard

An organization uses UCS Central to manage multiple UCS domains. A global service profile policy is created in UCS Central to enforce a common boot policy across all domains. However, one UCS domain needs a different boot order for a specific set of blades. How should the administrator implement this deviation while maintaining centralized manageability?

A.Create a local boot policy in the specific UCS Manager and assign it to the service profiles that need the change.

B.Exclude the specific UCS domain from the global policy and create a separate global policy for that domain.

C.Delete the global boot policy and use only local policies.

D.Modify the global boot policy in UCS Central to include all variations.

AnswerA

Local policies override global policies for the assigned service profiles.

Why this answer

UCS Central allows global policies, but local policies in each UCS Manager can override them for specific service profiles. The administrator should create a local boot policy in the specific UCS domain and assign it to the service profiles that require the different boot order.

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114

Multi-Selectmedium

Which two are benefits of using Cisco UCS Central for multi-domain management? (Choose two.)

Select 2 answers

A.Eliminates the need for Fabric Interconnects.

B.Replaces the need for UCS Manager in each domain.

C.Allows creation of global service profile templates.

D.Provides a single pane of glass for managing multiple UCS domains.

E.Enables direct CIMC management of all servers.

AnswersC, D

Correct. Templates can be applied across domains.

Why this answer

UCS Central provides centralized management of multiple UCS domains, enabling global policies and service profile templates. It also offers visibility and consistency across domains.

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115

MCQhard

A large enterprise runs a Cisco HyperFlex cluster with three nodes, managed through Intersight. After a planned maintenance window, the administrator notices that one of the nodes is in a 'Degraded' state and the cluster is running in 'Read-Only' mode. The administrator checks the Intersight dashboard and sees that the node's disk status shows 'Missing' for one of the SSDs. The administrator also notices that the node's IP address is reachable and the ESXi host is still operational. The administrator reviews the cluster health and sees no other alerts. What is the most likely root cause and the recommended action to restore full cluster health?

A.The SSD failed due to a hardware fault; the administrator should replace the SSD and then use Intersight to rebuild the node's disk group.

B.The node lost connectivity to the cluster's internal network; the administrator should check the network switches and restore the VLAN configuration.

C.The node's controller VM (stCVM) is not running; the administrator should reboot the node and wait for the CVM to start.

D.The cluster has split-brain due to a partition; the administrator should force a cluster consensus by shutting down the other nodes.

AnswerA

A failed SSD is a common cause of a missing disk. Replacing the SSD and rebuilding the disk group restores redundancy and cluster health.

Why this answer

A is correct because a missing SSD in a HyperFlex node triggers a 'Degraded' state and forces the cluster into 'Read-Only' mode to prevent data corruption. Since the node's IP is reachable and ESXi is operational, the issue is a hardware fault, not a network or CVM problem. Replacing the SSD and using Intersight to rebuild the disk group restores the node's storage capacity and cluster health.

Exam trap

The trap here is that candidates may assume a 'Degraded' state with reachable ESXi implies a network or CVM issue, but the specific 'Missing' disk status points directly to a hardware fault, not a software or connectivity problem.

How to eliminate wrong answers

Option B is wrong because the node's IP is reachable and ESXi is operational, indicating no network connectivity loss; a VLAN misconfiguration would cause unreachability, not a missing SSD status. Option C is wrong because if the stCVM were not running, the node would likely be unreachable or show a different alert, and the disk status would not specifically show 'Missing' for an SSD. Option D is wrong because split-brain occurs when nodes lose quorum, typically due to network partition, not a single missing SSD; forcing consensus by shutting down other nodes would cause data loss and is not a recommended recovery step.

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116

Multi-Selecteasy

Which three components are required to boot a UCS blade server from SAN? (Choose three.)

Select 3 answers

A.SAN boot target LUN

B.vHBA

C.Boot policy

D.iSCSI adapter

E.vNIC

AnswersA, B, C

The actual storage unit from which to boot.

Why this answer

A SAN boot target LUN is required because the UCS blade server needs a specific logical unit number (LUN) on the storage array from which to boot the operating system. Without a designated boot LUN, the server has no target storage device to load the OS from over the Fibre Channel (FC) or FCoE SAN fabric.

Exam trap

Cisco often tests the distinction between vNIC (LAN) and vHBA (SAN), so candidates mistakenly select vNIC for SAN boot, not realizing that storage traffic requires a dedicated HBA abstraction.

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117

MCQmedium

A UCS C-series rack server is being integrated into UCS Manager using direct connect mode. Which statement about management connectivity is true?

A.The server's management traffic passes through the Fabric Interconnects

B.The server must be configured with IMC Supervisor

C.The server must use CIMC for management and cannot be managed by UCS Manager

D.The server is managed by UCS Manager through a dedicated management uplink

AnswerD

Direct connect mode uses a management interface to UCS Manager.

Why this answer

In direct connect mode, the C-series server is managed through UCS Manager via a dedicated management connection.

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118

MCQmedium

Refer to the exhibit. An administrator updates template-B but its associated profile SP2 shows 'unassigned'. The administrator wants SP2 to reflect the changes. What should be done first?

A.Disable and re-enable template-B

B.Wait for the automatic association to occur

C.Associate SP2 with template-B using the 'bind' operation

D.Rebind all profiles to template-B

AnswerC

Binding creates the link between profile and template.

Why this answer

In Cisco UCS Manager, a service profile (SP2) must be explicitly bound to a template (template-B) to inherit updates. The 'bind' operation associates the profile with the template, allowing changes made to the template to propagate to the profile. Simply disabling and re-enabling the template or waiting for automatic association does not establish this binding; the profile remains 'unassigned' until it is bound.

Exam trap

Cisco often tests the distinction between 'updating templates' and 'initial templates', where candidates mistakenly assume that simply enabling or refreshing a template will automatically update associated profiles, overlooking the explicit bind requirement.

How to eliminate wrong answers

Option A is wrong because disabling and re-enabling a template does not change the association state of a service profile; it only toggles the template's operational status without affecting the binding. Option B is wrong because Cisco UCS Manager does not automatically associate a service profile with a template; the administrator must manually perform a bind operation to link the profile to the template. Option D is wrong because rebinding all profiles to template-B is unnecessary and could disrupt other profiles; only SP2 needs to be bound to template-B to reflect the changes.

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119

MCQhard

A data center administrator is configuring a Cisco UCS C-series rack server in standalone mode using CIMC. Which interface must be used to mount an ISO image for OS installation over the network?

A.Cisco IMC Supervisor

B.UCS Manager GUI

C.UCS Central

D.CIMC web interface (KVM or Virtual Media)

AnswerD

CIMC provides KVM and virtual media for remote ISO mounting.

Why this answer

CIMC provides virtual media capabilities, allowing remote mounting of ISO images via KVM or virtual media session.

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120

MCQmedium

A UCS B-Series chassis has four IOM modules installed. The chassis is connected to two Fabric Interconnects. How many uplink connections are typically used from each IOM to the Fabric Interconnects to ensure full bandwidth redundancy?

A.One uplink from the chassis to each FI

B.Four uplinks per IOM to a single FI

C.One uplink per IOM to each FI

D.Two uplinks per IOM to each FI

AnswerD

Each IOM has four ports, typically two are connected to FI-A and two to FI-B, ensuring full bandwidth and redundancy.

Why this answer

Each IOM has four uplink ports (two per fabric). To achieve full bandwidth and redundancy, typically all four uplinks are used (two to FI-A and two to FI-B).

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121

MCQmedium

An administrator needs to perform a remote firmware upgrade on a UCS C220 rack server. The server has CIMC configured with an IP address. Which method should the administrator use to upgrade the CIMC firmware?

A.Use the KVM console to boot from a firmware upgrade ISO.

B.Use UCS Manager to upgrade the firmware of the C-series server.

C.Use Cisco IMC Supervisor to upgrade firmware across multiple servers.

D.Use the CIMC web interface to upload and apply the firmware image.

AnswerD

CIMC provides direct firmware upgrade capability.

Why this answer

CIMC supports firmware upgrade via its web interface or CLI using protocols like HTTP, TFTP, or SCP. The recommended method is to use the CIMC GUI or the 'update firmware' command in CIMC.

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122

MCQmedium

An engineer is configuring a UCS service profile for a blade server that will use FCoE to connect to a Fibre Channel SAN. What must be configured in the service profile to support FCoE traffic?

A.Configure the vNIC with FCoE personality and specify the FCoE VLAN

B.Assign a WWPN to the vNIC

C.Enable the FCoE flag on the vHBA

D.Set the vNIC to use the native VLAN for FCoE

AnswerA

This enables the vNIC to carry FCoE traffic.

Why this answer

To carry FCoE traffic, the vNIC must be configured to use the FCoE VLAN and have the FCoE personality enabled. This allows the adapter to parse FCoE frames.

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123

MCQhard

An administrator needs to replace a faulty blade server in a UCS chassis. The blade is associated with a service profile that has a persistent WWPN pool. What is the correct procedure to maintain stateless computing?

A.Remove the faulty blade, insert the new blade, and auto-associate the service profile

B.Replace the blade and delete the old service profile to create a new one

C.Replace the blade and update the WWPN pool to match the new hardware

D.Replace the blade and manually reconfigure the service profile with new WWPNs

AnswerA

The service profile will be automatically associated if the blade is discovered, or the administrator can manually associate it. The WWPNs remain the same.

Why this answer

UCS stateless computing allows a blade replacement without reconfiguration by simply disassociating the service profile from the faulty blade, removing the blade, inserting the new blade, and re-associating the same service profile. The WWPNs from the pool are retained.

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124

Multi-Selectmedium

Which three components are required for a basic Cisco UCS B-Series deployment? (Choose three.)

Select 3 answers

A.UCS C-Series Rack Server

B.Blade Servers (B-Series)

C.Fabric Interconnects

D.HyperFlex Cluster

E.UCS 5108 Blade Chassis

AnswersB, C, E

Correct. Blades provide compute.

Why this answer

A basic UCS B-Series deployment includes Fabric Interconnects for network connectivity, a UCS 5108 chassis to house blades, and blade servers. UCS Manager is software that typically runs on the FIs.

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125

MCQmedium

An engineer notices that after a reboot of one UCS fabric interconnect (FI-A), the server traffic fails over to FI-B but never fails back to FI-A even after FI-A is fully operational. Which configuration change would ensure automatic failback?

A.Change the 'Backup Link' policy to 'Active/Active'

B.Change the 'Backup Link' policy to 'Primary/Secondary'

C.Change the 'Backup Link' policy to 'Active/Standby'

D.Change the 'Backup Link' policy to 'Failover Only'

AnswerA

Active/Active mode allows automatic failback

Why this answer

The 'Backup Link' policy in UCS determines how uplink ports behave during failover and failback. Setting it to 'Active/Active' allows both FIs to actively forward traffic, and when the failed FI recovers, the server traffic automatically fails back because the policy does not designate a permanent primary or standby role. This ensures symmetric traffic flow without manual intervention.

Exam trap

Cisco often tests the misconception that 'Active/Standby' is a valid Backup Link policy, when in fact the only two options are 'Active/Active' and 'Primary/Secondary', and candidates confuse the failover behavior of the server vNIC policy with the uplink Backup Link policy.

How to eliminate wrong answers

Option B is wrong because 'Primary/Secondary' designates one FI as primary and the other as secondary, which prevents automatic failback after the primary recovers; traffic remains on the secondary until manual action is taken. Option C is wrong because 'Active/Standby' is not a valid UCS Backup Link policy; the correct term is 'Active/Active' or 'Primary/Secondary', and 'Active/Standby' would imply a standby role that blocks automatic failback. Option D is wrong because 'Failover Only' is not a valid UCS Backup Link policy; the actual options are 'Active/Active' and 'Primary/Secondary', and a 'Failover Only' concept would not allow failback at all.

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126

MCQmedium

A UCS administrator is creating a boot policy for a service profile that will be used for B-series blades. The requirement is to boot from a LUN on a SAN-attached storage array. Which boot order should be configured in the service profile boot policy?

A.Local disk and SAN with equal priority

B.PXE first, then SAN

C.Local disk first, then SAN

D.SAN only with vHBA

AnswerD

Correct. Boot from SAN requires the vHBA as the primary (and only) boot device in the policy.

Why this answer

Boot from SAN uses a vHBA to connect to a storage LUN. The boot policy should list the SAN target first.

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127

MCQhard

An organization deploys compute resources using both UCS B-Series blades and C-Series rack servers. The network uses Cisco ACI. Which approach ensures consistent connectivity policies across both compute types?

A.Use a single EPG with appropriate encapsulation for both

B.Create separate EPGs for blade and rack servers

C.It is not possible to have consistent policies between blade and rack

D.Use a physical domain for blades and a VMM domain for rack servers

AnswerA

Single EPG ensures consistent policy application

Why this answer

Cisco ACI allows a single Endpoint Group (EPG) to span both UCS B-Series blades and C-Series rack servers by using the appropriate encapsulation (e.g., VLAN or VXLAN) and associating the EPG with both a physical domain (for blades connected via Fabric Interconnects) and a VMM domain (for rack servers managed by VMware vCenter). This ensures consistent connectivity policies, such as contracts and QoS, are applied uniformly across all compute types without requiring separate EPGs.

Exam trap

Cisco often tests the misconception that different compute types (blade vs. rack) require separate EPGs, when in fact a single EPG can span multiple domains to enforce consistent policies, and the trap here is assuming that physical and VMM domains are mutually exclusive rather than complementary.

How to eliminate wrong answers

Option B is wrong because creating separate EPGs for blade and rack servers would fragment policy enforcement, requiring duplicate contracts and filters, which contradicts the goal of consistent connectivity policies. Option C is wrong because it is entirely possible to have consistent policies between blade and rack servers using a single EPG with appropriate domain associations, as supported by Cisco ACI's unified policy model. Option D is wrong because using a physical domain for blades and a VMM domain for rack servers is a valid approach to associate the EPG with both compute types, but the statement incorrectly implies they must be used separately; in fact, both domains can be attached to the same EPG to achieve consistency.

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128

MCQeasy

Which best practice should be followed when creating a UCS service profile template for stateless computing?

A.Assign MAC and WWN addresses from pools

B.Use local storage on each server for boot images

C.Configure Windows Server NIC teaming for all vNICs

D.Define MAC addresses directly in the service profile

AnswerA

Pools enable auto-assignment and stateless operation

Why this answer

Stateless computing in UCS requires that all server identity information, such as MAC addresses and WWNs, be abstracted away from the hardware and assigned dynamically from pools. This allows the service profile to be applied to any compatible blade or rack server without manual reconfiguration, enabling rapid provisioning and seamless hardware replacement. Defining these addresses directly in the profile or using static assignments would break the stateless model by tying the profile to specific hardware.

Exam trap

Cisco often tests the misconception that stateless computing means you can hardcode identities like MAC addresses for consistency, when in fact the opposite is true—pools are essential to maintain the stateless abstraction.

How to eliminate wrong answers

Option B is wrong because stateless computing relies on centralized boot from SAN or network storage, not local storage, to ensure that server identity and data are independent of the physical hardware; using local storage would reintroduce statefulness. Option C is wrong because Windows Server NIC teaming is a guest OS-level configuration that should be handled separately from the UCS service profile, which manages vNIC failover via fabric failover or pinning at the infrastructure layer. Option D is wrong because defining MAC addresses directly in the service profile defeats the purpose of stateless computing by creating a hard dependency on specific addresses, preventing the profile from being reused across different servers without conflict.

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129

MCQmedium

Refer to the exhibit. The server in slot 2 is associated and working. A new server is inserted into slot 1, but after 30 minutes it remains in 'Unassigned' state. What is the most likely reason?

A.The service profile is already associated with another server.

B.The server is not powered on.

C.The server's CIMC firmware is not compatible with the Fabric Interconnect firmware.

D.The Fabric Interconnect ports are not configured as server ports.

AnswerC

Incompatibility can cause discovery to fail, leaving the slot unassigned.

Why this answer

The server in slot 1 remains in 'Unassigned' state because its CIMC firmware is incompatible with the Fabric Interconnect firmware. In Cisco UCS, the CIMC on each blade must match a supported firmware version for the Fabric Interconnect to discover and manage the server. When firmware versions are mismatched, the server cannot transition to the 'Associated' state and stays 'Unassigned'.

Exam trap

Cisco often tests the distinction between 'Unassigned' (server not discovered/manageable) and 'Unassociated' (server discovered but not bound to a service profile), leading candidates to incorrectly attribute the issue to service profile association or power state.

How to eliminate wrong answers

Option A is wrong because if the service profile were already associated with another server, the new server would show as 'Unassociated' (available for association) or would fail association, not remain 'Unassigned' — the 'Unassigned' state indicates the server is not yet discovered or manageable. Option B is wrong because a server not powered on would still be discovered by the Fabric Interconnect and appear in a 'Discovered' or 'Unassociated' state; power state does not prevent the server from being assigned a service profile. Option D is wrong because Fabric Interconnect ports configured as server ports are required for server connectivity, but if they were misconfigured, the existing server in slot 2 would also be affected and not working — the exhibit shows slot 2 is associated and working, so port configuration is correct.

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130

MCQmedium

A UCS service profile includes a vHBA that is bound to a WWPN. The blade server fails and is replaced with a new blade of the same model. What happens to the WWPN configuration after the replacement?

A.The WWPN must be re-imported from the SAN fabric

B.The WWPN is automatically applied from the service profile to the new blade

C.The WWPN is generated by the CIMC of the new blade

D.The WWPN is lost and must be reconfigured manually on the new blade

AnswerB

Correct. The service profile abstracts the WWPN, so the new blade inherits it.

Why this answer

Stateless computing ensures that the WWPN is inherited from the service profile, so the replacement blade uses the same WWPN.

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131

MCQhard

During a UCS service profile configuration, an engineer needs to specify that the server should boot from a SAN LUN. Which boot policy type should be configured?

A.SAN boot policy

B.Local disk boot policy

C.PXE boot policy

D.Virtual media boot policy

AnswerA

SAN boot policy enables booting from a Fibre Channel or FCoE LUN.

Why this answer

A SAN boot policy specifies the WWPN of the target and LUN ID to boot from a SAN LUN.

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132

Multi-Selectmedium

Which THREE are benefits of using Cisco UCS Manager to manage compute resources? (Choose three.)

Select 3 answers

A.Centralized management of multiple chassis

B.Direct management of virtual machines

C.Policy-based provisioning to automate server deployment

D.Improved performance by disabling hardware features

E.Unified fabric for LAN and SAN traffic

AnswersA, C, E

UCS Manager manages up to 160 chassis.

Why this answer

Cisco UCS Manager provides a single-pane-of-glass management interface that can centrally manage up to 160 chassis (including UCS 5108 and UCS 9508) in a single domain. This eliminates the need to configure each chassis individually, reducing operational overhead and ensuring consistent configuration across the entire compute infrastructure.

Exam trap

Cisco often tests the distinction between what UCS Manager directly manages (physical compute and fabric) versus what it integrates with (hypervisors for VMs), so candidates mistakenly think UCS Manager can manage VMs because of its integration with VMware vCenter.

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133

MCQhard

A data center uses HyperFlex HX Data Platform with a 3-node cluster configured with replication factor 2 (RF2). One node fails permanently. What is the impact on data availability and cluster operation?

A.Data is unavailable until the failed node is replaced

B.The witness VM takes over the failed node's storage role

C.The cluster automatically changes to RF3 to maintain protection

D.All data remains accessible but the cluster is degraded and requires a new node to restore RF2

AnswerD

Correct. Data is available, but redundancy is lost until a new node is added.

Why this answer

With RF2, each data block is stored on two nodes. If one node fails, the remaining two nodes have all data, but the cluster becomes degraded. A new node must be added to restore redundancy.

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134

Multi-Selectmedium

A network administrator is planning a UCS C-Series rack server deployment. Which two statements correctly describe the integration modes with UCS Manager? (Choose two.)

Select 2 answers

A.In Cisco IMC Supervisor mode, the server is managed by the IMC Supervisor but can also be integrated into UCS Manager.

B.In Cisco IMC Supervisor mode, the server's CIMC is managed directly by UCS Manager.

C.In Direct Connect mode, the server must be connected to a Fabric Interconnect via a supported adapter.

D.In Direct Connect mode, the server is managed directly by UCS Manager via the Fabric Interconnect.

E.Standalone mode allows the server to be managed by UCS Manager without any additional configuration.

AnswersC, D

Direct Connect requires a VIC adapter that connects to the FI.

Why this answer

Direct Connect mode connects servers directly to FI for management; IMC Supervisor mode manages via IMC Supervisor; standalone mode is independent.

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135

MCQeasy

An organization has deployed a Cisco UCS B-Series blade server with a Fabric Interconnect pair. The administrator is tasked with deploying a new server for a critical application. The administrator creates a service profile from an existing template that includes vNIC, vHBA, and storage policies. The blade is located in chassis 2, slot 1. The administrator attempts to associate the profile with this blade but fails with the error: 'No suitable compute resource available.' The administrator verifies that the blade's firmware is updated, that the blade is not already associated with another profile, and that it has sufficient memory and CPU. What is the most likely cause?

A.The blade's firmware version is incompatible with the service profile.

B.The blade is in the wrong chassis slot.

C.The server pool policy is not assigned to the service profile template.

D.The vNIC/vHBA policies in the service profile have invalid MAC/WWN assignments.

AnswerC

Without a server pool, UCS Manager cannot determine which blade to use for the association, leading to the 'No suitable compute resource available' error.

Why this answer

The error 'No suitable compute resource available' typically occurs when the service profile is configured to use a server pool, but no server pool policy is assigned to the service profile template. Without a server pool, the Fabric Interconnect cannot identify which blades are eligible for association, even if the blade itself is available and meets hardware requirements. Assigning a server pool policy to the template ensures that blades in the specified pool (e.g., chassis 2, slot 1) are considered as valid compute resources.

Exam trap

Cisco often tests the concept that 'No suitable compute resource available' is not about hardware faults or firmware mismatches but about the absence of a server pool policy in the service profile template, which candidates may overlook because they focus on verifying blade hardware readiness.

How to eliminate wrong answers

Option A is wrong because the administrator already verified that the blade's firmware is updated, and firmware incompatibility would typically generate a different error (e.g., 'Firmware version mismatch') rather than 'No suitable compute resource available.' Option B is wrong because the blade's location (chassis 2, slot 1) is explicitly specified in the service profile association attempt, and the error is not about physical slot constraints but about logical resource selection. Option D is wrong because invalid MAC/WWN assignments would cause a policy validation failure or association error related to network/storage configuration, not a 'no suitable compute resource' error, which is specifically about the blade not being found in the available resource pool.

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136

MCQhard

A UCS administrator notices that a server in a UCS domain is not booting from SAN after a firmware upgrade. The service profile shows the correct WWPN and boot policy. The SAN switch sees the initiator login. However, the storage array does not see any initiator attempts. What is the most likely issue?

A.The boot policy is missing the primary SAN target

B.The WWPN is duplicated on another initiator

C.The zone alias on the SAN switch does not match the initiator WWPN

D.The VSAN membership is incorrect on the fabric interconnect

AnswerC

The zone alias mismatch would allow login (since zoning is based on WWPN) but the storage may not see the initiator if zones are misconfigured.

Why this answer

The SAN switch sees the initiator login, but the storage array does not see any initiator attempts. This indicates that the Fibre Channel fabric is blocking the initiator's WWPN from reaching the storage target, typically because the zone configuration on the SAN switch does not include the initiator's WWPN or the zone alias does not match the actual WWPN. Since the service profile and boot policy are correct, and the VSAN membership is functional (the switch sees the login), the most likely issue is a zoning mismatch on the SAN switch.

Exam trap

Cisco often tests the distinction between fabric-level visibility (FLOGI success) and zone-level communication (PLOGI/PRLI failure) to trick candidates into assuming the issue is with the boot policy or VSAN membership rather than zoning.

How to eliminate wrong answers

Option A is wrong because the boot policy is confirmed correct in the question, and a missing primary SAN target would cause the server to fail to find the boot LUN, but the storage array would still see initiator attempts if zoning were correct. Option B is wrong because a duplicate WWPN would cause login conflicts or fabric segmentation, but the SAN switch sees the initiator login successfully, ruling out duplication. Option D is wrong because incorrect VSAN membership would prevent the fabric interconnect from seeing the initiator login at all, but the SAN switch does see the login, indicating VSAN membership is functional.

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137

Matchingmedium

Match each Cisco MDS FC switch feature to its purpose.

Drag a concept onto its matching description — or click a concept then click the description.

Concepts

Matches

Virtual SAN for isolating Fibre Channel traffic

Access control between initiators and targets

Routing protocol for Fibre Channel fabric

Fibre Channel over IP for remote connectivity

Inter-VSAN routing for selective communication

Why these pairings

VSAN, Zoning, and NPV are correctly matched. FCoE encapsulates Fibre Channel over Ethernet, and DCNM provides centralized management. Common confusions include mixing VSAN with FCoE or DCNM with FCoE.

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138

MCQeasy

What is the purpose of the Cisco Integrated Management Controller (CIMC) for UCS C-Series rack servers?

A.To provide high-speed data switching between servers

B.To enable out-of-band management for remote server control

C.To manage storage arrays

D.To replace the need for a Fabric Interconnect

AnswerB

Correct. CIMC allows remote management.

Why this answer

CIMC provides out-of-band management for rack servers, including remote KVM, virtual media, and firmware updates, independent of the host OS.

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139

Multi-Selectmedium

A UCS B-series blade server is experiencing boot issues. The service profile is configured to boot from local disk first, then SAN. The blade has local disks but they are not recognized. Which TWO actions should be taken to diagnose the issue?

Select 2 answers

A.Verify the boot policy in the service profile.

B.Re-associate the service profile.

C.Check the Fibre Channel fabric connectivity.

D.Review the local disk configuration policy and RAID settings.

E.Check the blade's CIMC for disk presence.

AnswersD, E

Improper RAID configuration can cause disks to be unrecognized.

Why this answer

Possible causes: local disk not connected, or RAID configuration missing. Checking physical presence in CIMC and verifying RAID configuration are logical first steps.

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140

MCQmedium

An organization has deployed a 4-node HyperFlex cluster with all-flash storage and replication factor 3 (RF3). One node fails. How many nodes are required to remain operational for the cluster to continue serving data without interruption?

A.1

B.2

C.4

D.3

AnswerD

Three nodes still hold all three replicas of data.

Why this answer

For RF3, data is replicated three times. With 4 nodes, if one fails, three remain, which still have all data copies. The cluster remains operational.

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141

MCQmedium

A data center engineer is configuring a Cisco UCS C-Series server with a hardware RAID controller. The server will host a critical database. The RAID controller supports RAID 0, 1, 5, 6, and 10. Which RAID level should be chosen to provide the best combination of performance and fault tolerance?

A.RAID 10

B.RAID 6

C.RAID 5

D.RAID 0

AnswerA

RAID 10 combines mirroring and striping, offering both performance and fault tolerance.

Why this answer

RAID 10 (striping of mirrors) provides the best combination of performance and fault tolerance for a critical database workload. It offers high read/write performance through striping and full redundancy via mirroring, allowing up to one disk failure per mirrored pair without data loss. This is ideal for a Cisco UCS C-Series server with a hardware RAID controller where both I/O throughput and availability are paramount.

Exam trap

Cisco often tests the misconception that RAID 5 or RAID 6 offer 'good enough' performance for databases, but the trap is that parity-based RAIDs introduce significant write penalties that degrade transactional throughput, making RAID 10 the correct choice for critical database workloads.

How to eliminate wrong answers

Option B (RAID 6) is wrong because while it offers dual parity and can tolerate two disk failures, its write performance is significantly degraded due to double parity calculations, making it unsuitable for a performance-sensitive database. Option C (RAID 5) is wrong because its single parity provides lower fault tolerance and suffers from a write penalty during parity updates, which can bottleneck database transactions. Option D (RAID 0) is wrong because it offers no fault tolerance; any single disk failure results in complete data loss, which is unacceptable for a critical database.

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142

MCQhard

A Cisco UCS upgrade from release 3.1(1) to 4.0(4) is planned. The current release has a known issue that affects NVRAM backup. What is the best practice to avoid an outage during this upgrade?

A.Perform a cold reboot of all Fabric Interconnects before starting.

B.Upgrade all components simultaneously to reduce transition time.

C.Upgrade the firmware on the chassis first, then the Fabric Interconnects.

D.Upgrade to an intermediate release that is recommended for the upgrade path.

AnswerD

Most major upgrades require stepping through an intermediate release.

Why this answer

Cisco UCS firmware upgrades must follow a supported upgrade path to avoid incompatibilities and known issues. Skipping directly from 3.1(1) to 4.0(4) is not supported; an intermediate release (e.g., 3.2(x) or 4.0(1)) is required to resolve the NVRAM backup issue and ensure a seamless upgrade without service disruption.

Exam trap

Cisco often tests the concept of supported upgrade paths and intermediate releases, trapping candidates who assume direct upgrades are always possible or that component order can be rearranged arbitrarily.

How to eliminate wrong answers

Option A is wrong because a cold reboot of all Fabric Interconnects before starting would cause an immediate outage, defeating the purpose of avoiding downtime; the upgrade process itself handles reboots gracefully. Option B is wrong because upgrading all components simultaneously violates Cisco's recommended sequential upgrade order (Fabric Interconnects first, then chassis IOMs, then servers) and increases the risk of configuration mismatches and extended downtime. Option C is wrong because the chassis firmware should be upgraded after the Fabric Interconnects, not before, as the Fabric Interconnects control the management plane and must be at a compatible version first.

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143

MCQeasy

In a Cisco UCS B-Series deployment, which component provides the physical connectivity between blade server mezzanine cards and the Fabric Interconnects?

A.UCS Manager

B.Fabric Extender (FEX)

C.I/O Module (IOM)

D.Cisco Integrated Management Controller (CIMC)

AnswerC

Correct. The IOM connects blade mezzanine cards to Fabric Interconnects.

Why this answer

The I/O Module (IOM) in the UCS 5108 chassis provides the connectivity between blade server mezzanine cards and the Fabric Interconnects via server ports.

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144

MCQmedium

An engineer is connecting a Cisco UCS C-Series rack server to the network. The server must be managed by UCS Manager alongside existing B-Series blades. Which mode should the C-Series server be configured in?

A.Direct Connect mode

B.UCS Manager mode

C.Standalone mode

D.Cisco IMC Supervisor mode

AnswerB

UCS Manager mode allows unified management of C-Series in UCS Manager.

Why this answer

C-Series rack servers can be integrated into UCS Manager using UCS Manager mode (sometimes called C-Series Integrated mode), where they are managed through the Fabric Interconnects.

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145

MCQmedium

A UCS administrator notices that a service profile associated with a vNIC template that uses 'fabric failover' is not failing over to the secondary Fabric Interconnect when the primary link goes down. The vNIC template is set to 'fabric failover' enabled, and both Fabric Interconnects are in the same VLAN. What is the most likely cause?

A.The 'Primary Fabric' setting is not defined in the vNIC template.

B.The server is pinned to the primary Fabric Interconnect via a pin group.

C.The MTU size on the secondary Fabric Interconnect is set to 1500 instead of 9000.

D.The 'MAC Address' policy is set to 'pool-based' instead of 'static'.

AnswerA

The primary fabric must be selected in the vNIC template for failover to function correctly.

Why this answer

When 'fabric failover' is enabled on a vNIC template, the UCS Manager requires the 'Primary Fabric' setting to be explicitly defined to determine which Fabric Interconnect (FI-A or FI-B) should be the active path. Without this setting, the system cannot properly orchestrate the failover behavior, causing the vNIC to remain pinned to the primary FI even when its link goes down. This is a common misconfiguration because the 'fabric failover' checkbox alone does not imply a primary fabric assignment.

Exam trap

Cisco often tests the misconception that enabling 'fabric failover' alone is sufficient for automatic failover, when in fact the 'Primary Fabric' field must also be explicitly configured to define the active path.

How to eliminate wrong answers

Option B is wrong because a pin group explicitly pins a server to a specific Fabric Interconnect, which would prevent failover by design; however, the question states the vNIC template uses 'fabric failover' enabled, and a pin group would override that setting, but the most likely cause is the missing 'Primary Fabric' definition, not the presence of a pin group. Option C is wrong because MTU size mismatch (1500 vs 9000) affects jumbo frame support and packet fragmentation, not the failover mechanism between Fabric Interconnects. Option D is wrong because the MAC Address policy (pool-based vs static) determines how MAC addresses are assigned to vNICs, but it has no impact on fabric failover behavior.

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146

MCQeasy

What is the primary benefit of using UCS service profiles for server deployment?

A.Hardware abstraction and stateless computing

B.Increased network bandwidth

C.Reduced power consumption

D.Simplified storage zoning

AnswerA

Service profiles decouple the logical server identity from physical hardware.

Why this answer

Service profiles abstract hardware configuration, allowing rapid provisioning and stateless computing. A server can be replaced without reconfiguration by simply associating the same service profile.

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147

MCQmedium

Which Cisco UCS component is responsible for aggregating traffic from multiple blade servers in a 5108 chassis to the Fabric Interconnect?

A.Cisco UCS 2200 Series Fabric Extender

B.Cisco UCS 5108 Chassis I/O Module (IOM)

C.Cisco UCS 6300 Series Fabric Interconnect

D.Cisco UCS 2100 Series Fabric Extender

AnswerB

The I/O Module (IOM) in the 5108 chassis aggregates traffic from blade servers and uplinks to the Fabric Interconnect. This is the correct component as per Cisco's naming convention.

Why this answer

The I/O Module (IOM) in the 5108 chassis connects to the midplane and uplinks to the Fabric Interconnect via server ports.

Exam trap

The Cisco UCS 2200 Series Fabric Extender is actually the I/O Module (IOM) used in the 5108 chassis. Candidates often confuse the naming and think Fabric Extenders are separate from IOMs, but they are the same component. The correct answer is the IOM (B), while the Fabric Extender (A) describes the same hardware, which is why it's a trap.

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148

MCQmedium

In UCS service profile templates, when you update the template, how do the changes propagate to the service profiles derived from it?

A.Changes are applied only if the service profile is not associated with a server.

B.Changes are automatically applied to all derived service profiles immediately.

C.Changes are applied only during server reboot.

D.Changes must be manually applied to each derived service profile.

AnswerB

By default, templates update derived profiles automatically, though this can be overridden.

Why this answer

When a service profile is created from a template, it can be set to update automatically when the template changes, or manually. The default behavior is that changes are propagated automatically unless the profile is set to manual update.

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149

MCQmedium

An organization wants to integrate their UCS C-series rack servers into an existing UCS Manager domain. Which mode should be used to achieve centralized management of the C-series servers through UCS Manager?

A.Direct Connect mode

B.UCS Managed mode

C.Standalone mode

D.Cisco IMC Supervisor mode

AnswerB

In UCS Managed mode, the C-series server appears as a compute resource in UCS Manager and can be assigned service profiles.

Why this answer

C-series servers can be managed by UCS Manager when they are in UCS Managed mode, which requires the server to be connected via a Fabric Interconnect and have the appropriate license.

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150

MCQmedium

Which component in a UCS domain is responsible for aggregating and forwarding all management traffic between the chassis and the fabric interconnects?

A.CIMC

B.Blade BMC

C.IOM (FEX)

D.System controller (CMC)

AnswerD

The CMC manages the chassis and communicates with the FIs over the management network.

Why this answer

The system controller (also known as the chassis management controller) in the UCS chassis handles management traffic for the blades, including communication with UCS Manager via the FIs.

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