350-601 Storage Network Practice Test 11 — 15 Questions

Question 1

In a Cisco UCS environment, which component provides the Fibre Channel connectivity to the SAN switches when using FCoE?

Accepted Answer

UCS Fabric Interconnect. In a Cisco UCS environment, the Fabric Interconnect (FI) is the component that provides Fibre Channel connectivity to SAN switches when using FCoE. The FI integrates both Ethernet and Fibre Channel traffic, performing FCoE encapsulation and forwarding the Fibre Channel frames to the SAN via its native Fibre Channel uplink ports. This allows the UCS domain to connect directly to Fibre Channel SAN fabrics without requiring external FCoE-capable switches.

Answer

IOM (I/O Module)

Answer

Cisco VIC adapter

Answer

UCS Manager

Question 2

Which of the following is a required characteristic of an FCoE SAN?

Accepted Answer

Lossless Ethernet (PFC) must be enabled.. FCoE (Fibre Channel over Ethernet) requires a lossless Ethernet fabric to prevent frame drops, which would corrupt Fibre Channel frames. Priority Flow Control (PFC), defined in IEEE 802.1Qbb, enables lossless operation by pausing traffic on individual CoS queues, ensuring no-drop behavior for FCoE traffic. Without PFC, standard Ethernet's best-effort delivery would cause frame loss, breaking FCoE's reliability requirements.

Answer

Jumbo frames must be enabled.

Answer

Spanning Tree Protocol must be disabled.

Answer

Link aggregation (LACP) is required.

Question 3

An engineer is designing a SAN for a virtualized environment. Which two best practices should be followed for Fibre Channel zoning?

Accepted Answer

Use single-initiator zoning.. Option A is correct because single-initiator zoning (one initiator per zone with its target(s)) is the recommended Fibre Channel best practice: it limits the number of devices that can see each other, reduces the size of the name-server and RSCN (Registered State Change Notification) propagation domain, and prevents disruptive interactions between hosts in a virtualized environment where many VMs share HBAs. Option E is correct because zoning should be performed using WWPNs (World Wide Port Names), which uniquely identify a specific HBA port, rather than WWNNs (World Wide Node Names), which identify the node and can be shared across multiple ports, making port-level access control ambiguous. Option B is not recommended because placing multiple initiators in one zone increases the visibility domain, RSCN storms, and the risk of one host's misbehavior affecting others. Option C is wrong because soft zoning relies only on name-server filtering and does not enforce isolation in the fabric hardware, so hard (port-level) zoning is preferred for security and determinism. Option D is wrong because disabling zoning removes access control and fabric isolation entirely, which is never a performance best practice.

Answer

Use multiple initiators in a single zone.

Answer

Use soft zoning exclusively.

Answer

Disable zoning for performance.

Question 4

A Fibre Channel switch is experiencing high latency on a specific ISL. The link is operating at 16 Gbps and has high utilization. Which action will most likely reduce latency?

Accepted Answer

Add an additional ISL and configure a port channel.. Adding an additional ISL and configuring a port channel increases the aggregate bandwidth between the two switches, reducing per-link utilization and thus lowering queuing latency. This directly addresses the root cause—high utilization on a single 16 Gbps link—by distributing traffic across multiple physical links, which also provides load balancing and redundancy.

Answer

Reduce the buffer credit count.

Answer

Enable trunking on the ISL.

Answer

Disable flow control on the ISL.

Question 5

What is the purpose of NPIV (N_Port ID Virtualization) in a Fibre Channel SAN?

Accepted Answer

Allow a single physical port to register multiple N_port IDs.. NPIV allows a single physical Fibre Channel N_Port to register multiple unique N_Port IDs (FCIDs) with the fabric. This is essential for virtualizing Fibre Channel connectivity, enabling multiple virtual machines or logical partitions to share one physical HBA port while each appearing as a distinct initiator to the SAN.

Answer

Provide encryption on Fibre Channel links.

Answer

Enable multiple paths between initiator and target.

Answer

Allow a switch to act as an NPV device.

Question 6

An engineer is configuring a storage network with FCoE and must ensure that the FCoE traffic does not interfere with standard LAN traffic. Which two mechanisms should be implemented?

Accepted Answer

Enable PFC on the FCoE VLAN.. Option C is correct because Priority Flow Control (PFC, defined in IEEE 802.1Qbb) provides per-priority, lossless behavior on the FCoE VLAN, which is required so that FCoE frames (which are not retransmitted by the Fibre Channel stack) are not dropped during congestion. Option D is correct because placing FCoE traffic on a dedicated VLAN isolates it from standard LAN traffic, preventing broadcast storms, congestion, and other LAN behavior from affecting storage traffic. Options A, B, and E do not belong: sharing one VLAN for FCoE and LAN (A) defeats the isolation requirement, disabling flow control (B) removes the lossless guarantee FCoE needs, and using jumbo frames only for LAN traffic (E) is irrelevant and would actually be backwards, since FCoE typically benefits from jumbo frames on the storage path.

Answer

Use the same VLAN for FCoE and LAN.

Answer

Disable flow control on FCoE VLAN.

Answer

Use jumbo frames for LAN traffic only.

Question 7

Which of the following is a benefit of using Fibre Channel over Ethernet (FCoE) in a data center?

Accepted Answer

It reduces cabling complexity by using a unified fabric.. FCoE encapsulates Fibre Channel frames over Ethernet networks, allowing storage and data traffic to share the same physical infrastructure. This consolidation reduces cabling complexity and the number of required switches, adapters, and power/cooling overhead, which is the core benefit of a unified fabric.

Answer

It increases the maximum distance of Fibre Channel links.

Answer

It provides native Fibre Channel security.

Answer

It eliminates the need for zoning.

Question 8

An administrator needs to configure a Fibre Channel SAN to support two separate departments that must not see each other's storage. Each department has its own set of initiators and targets. Which technology should be used?

Accepted Answer

VSANs (Virtual SANs). VSANs (Virtual SANs) provide isolation within a single Fibre Channel fabric by partitioning the physical SAN into multiple logical SANs. Each department's initiators and targets are placed in separate VSANs, ensuring they cannot see each other's storage traffic or devices, which meets the requirement for complete separation without additional physical hardware.

Answer

Port channels

Answer

NPV

Answer

IVR (Inter-VSAN Routing)

Question 9

In a Cisco MDS switch, what is the effect of the command 'fcdomain restart vsan 100'?

Accepted Answer

It causes a fabric reconfiguration, which may disrupt traffic.. The 'fcdomain restart vsan 100' command triggers a fabric reconfiguration (RCF) on VSAN 100. This process resets the principal switch selection and domain ID distribution, causing all switches in the VSAN to renegotiate their roles and domain IDs, which disrupts existing Fibre Channel traffic during the reconfiguration.

Answer

It enables NPV mode on VSAN 100.

Answer

It clears the zone configuration for VSAN 100.

Answer

It reboots the switch.

Question 10

A Cisco MDS switch is configured for NPV mode. An upstream NPIV-enabled switch is connected. The administrator notices that the NPV switch is not logging in to the NPIV switch. The NPV switch shows the following: 'show npv status' indicates NPV is enabled but no traffic. Which three conditions could cause this issue?

Accepted Answer

The uplink interface on the NPV switch is not configured as an NP port.. In NPV mode, the uplink interface on the NPV switch must be explicitly configured as an NP port (np). If the interface is left as a default F port or another port type, it cannot establish a connection to the upstream NPIV-enabled switch. The 'show npv status' output showing NPV enabled but no traffic indicates that the NPV switch is operational but the uplink is not properly configured to initiate the FLOGIN process.

Answer

FSPF is not enabled on the NPV switch.

Answer

The NPV switch does not have the proper license for NPV mode.

Question 11

Refer to the exhibit. An engineer sees this error on a Cisco MDS switch. What is the best action to resolve the issue?

Accepted Answer

Assign a different domain ID to one of the switches.. The error indicates a domain ID conflict between two switches in the same VSAN. In Fibre Channel fabrics, each switch must have a unique domain ID to build a correct forwarding table. Assigning a different domain ID to one of the switches resolves the conflict without disrupting the fabric.

Answer

Reload both switches to reset domain IDs.

Answer

Shut and no shut the ISL between the switches.

Answer

Change the VSAN on one of the switches.

Question 12

Refer to the exhibit. After applying this configuration, the engineer activates the zoneset with 'zoneset activate name ZONESET1 vsan 10'. The host with pwwn 10:00:00:00:c9:aa:bb:01 can communicate with the target with pwwn 10:00:00:00:c9:aa:bb:02. However, the host reports that it cannot see a third target with pwwn 10:00:00:00:c9:aa:bb:03. What is the most likely reason?

Accepted Answer

The third target is not a member of ZONE1.. The host can communicate with the target in ZONE1 (pwwn 10:00:00:00:c9:aa:bb:02) but not with the third target (pwwn 10:00:00:00:c9:aa:bb:03). This indicates that the zoneset activation was successful and the host is in the correct VSAN. The most likely reason is that the third target is not a member of ZONE1; in Fibre Channel zoning, only members of the same zone can communicate, and a device not in the zone will be invisible to other zone members.

Answer

The third target is in a different VSAN.

Answer

The zone name is case-sensitive and does not match.

Answer

The zoneset was not activated successfully.

Question 13

A Cisco MDS switch is connected to a Fibre Channel storage array and a host. The host cannot see the storage LUNs. The 'show flogi database' command on the MDS shows the host's WWPN, but the 'show fcns database' does not show the storage target. What is the most likely cause?

Accepted Answer

The storage target is not logged into the fabric.. The 'show flogi database' command displays all devices that have completed the Fabric Login (FLOGI) process, which the host has done. However, the 'show fcns database' command lists only devices that have registered with the Fabric Name Server (via FDISC or FLOGI with PLOGI). Since the storage target is not in the name server database, it means the target has not logged into the fabric (or has not registered its FC-4 type/SCSI features), preventing the host from discovering its LUNs. This is the most likely cause because the host can see its own WWPN in the FLOGI database but cannot see the target in the FCNS database.

Answer

The zone configuration is incorrect.

Answer

The host and target are in different VSANs.

Answer

The host is not in the name server database.

Question 14

A company is deploying FCoE in their data center. The design includes a Cisco Nexus 9000 switch with FEX modules. The storage team insists on using dedicated FCoE VLANs. Which best practice should be followed to ensure lossless behavior for FCoE traffic?

Accepted Answer

Enable PFC on the switch for the FCoE VLAN. FCoE requires lossless transport to prevent frame drops that could corrupt Fibre Channel frames. Priority Flow Control (PFC), defined in IEEE 802.1Qbb, enables pause frames on a per-priority basis, allowing the FCoE VLAN to be configured with a dedicated priority class that receives no-drop treatment. On Cisco Nexus 9000 switches, this is achieved by enabling PFC on the specific VLAN used for FCoE traffic, ensuring lossless behavior without affecting other traffic classes.

Answer

Configure traffic shaping on FCoE interfaces

Answer

Use the same VLAN for FCoE and IP traffic to reduce VLAN count

Answer

Disable flow control on all interfaces

Question 15

Sequence the steps for configuring OSPF on a Cisco Nexus switch in a data center fabric.

Accepted Answer

First, create the OSPF process with 'router ospf '. Second, configure the router ID with 'router-id '. Third, enable OSPF on interfaces using 'ip router ospf area '. Finally, verify with 'show ip ospf'.. OSPF configuration involves creating the process, setting router ID, enabling on interfaces, and verification.

Answer

First, configure the router ID before creating the OSPF process, then create the process, then enable on interfaces, then verify.

Answer

First, create the OSPF process, then enable OSPF on interfaces, then configure the router ID, then verify.

Answer

First, enable OSPF on interfaces, then create the OSPF process, then set router ID, then verify.