VCP-VVF IT Architectures Technologies Standards — Timed 10 Questions

Question 1

An administrator is designing a new vSphere Foundation 9.0 cluster using 32-core AMD EPYC processors. Which hardware design standard must be verified to ensure maximum VM density and NUMA efficiency without cross-socket memory latency penalties?

10 minute time limit — choose an answer to begin.

Accepted Answer

Size virtual machine vCPUs to fit within the core and cache boundaries of a single physical NUMA node.. To maximize VM density and NUMA efficiency on AMD EPYC processors, VM vCPU counts should be sized to fit within a single physical NUMA node (core and cache boundaries). This avoids cross-socket memory access, which incurs higher latency and reduces performance. vSphere's NUMA scheduler places VMs on a single node when possible, but oversized VMs span nodes and suffer penalties.

Answer

Configure the hypervisor to span all vCPUs evenly across all sockets regardless of core counts.

Answer

Enable Fault Tolerance for every virtual machine to force physical socket load-balancing.

Answer

Disable hyperthreading globally across all hosts in the vCenter Server cluster settings.

Question 2

A data center architect is planning a vSphere Foundation 9.0 deployment utilizing NVMe-oF (NVMe over Fabrics) with TCP. Which architectural requirement is mandatory for the underlying physical network infrastructure?

Accepted Answer

Enforce a maximum transmission unit (MTU) of 9000 bytes across all physical switch ports and VMkernel adapters handling NVMe-oF traffic.. NVMe over Fabrics relies heavily on lossless or near-lossless low-latency packet delivery, making Jumbo Frames (MTU 9000) a standard architectural recommendation to reduce CPU overhead and fragmentation.

Answer

Configure spanning tree protocol (STP) with PortFast disabled on all access ports.

Answer

Implement static routing tables between every ESXi VMkernel port and storage controller.

Answer

Deploy Fibre Channel over Ethernet (FCoE) gateways on all top-of-rack switches.

Question 3

An infrastructure architect is configuring network security standards for a vSphere Foundation 9.0 environment. They want to ensure that all virtual machine traffic traversing a vSphere Distributed Switch cannot be sniffed by compromised guest operating systems using promiscuous mode. Which configuration setting must be enforced?

Accepted Answer

Set Promiscuous Mode, MAC Address Changes, and Forged Transmits to 'Reject' at the distributed port group security policy level.. Port group security policies on the vSphere Distributed Switch include Promiscuous Mode, MAC Address Changes, and Forged Transmits, which should be set to 'Reject' to prevent sniffing and spoofing.

Answer

Configure IP Source Guard on the physical switch access ports.

Answer

Deploy an external hardware tap appliance inline with the physical uplinks.

Answer

Enable BPDU Guard on all physical uplink switch ports connected to the ESXi host NICs.

Question 4

An administrator is reviewing host power management policies in a vSphere Foundation 9.0 cluster. To ensure compliance with strict application performance SLAs while achieving energy efficiency, which DPM (Distributed Power Management) and CPU power management standard should be implemented?

Accepted Answer

Configure ESXi power management policy to 'High Performance' and tune BIOS to OS-controlled or static maximum frequency.. To meet strict performance SLAs while still achieving energy efficiency, configure the ESXi power management policy to 'High Performance' and set the BIOS to OS-controlled or static maximum frequency. This ensures the host does not downclock CPUs in ways that add latency, while still allowing DPM to power off hosts when the cluster is idle. High Performance policy keeps CPUs at maximum frequency, and OS-controlled BIOS lets ESXi manage P-states deterministically.

Answer

Enable aggressive DPM with automated host power-off triggered every 5 minutes.

Answer

Disable Intel SpeedStep or AMD Cool'n'Quiet without specifying an ESXi power policy.

Answer

Set CPU power efficiency policy to maximum energy savings across all database nodes.

Question 5

An administrator is designing a vSphere Foundation 9.0 environment with high availability. Which component acts as the primary orchestrator for cluster-wide high availability (HA) failover actions if an ESXi host suffers a sudden power failure?

Accepted Answer

The elected HA Master ESXi host in the cluster.. In a vSphere HA cluster, the elected HA Master ESXi host is responsible for orchestrating cluster-wide HA failover actions. When a host suffers a sudden power failure, the HA Master detects the failure and coordinates the restart of affected virtual machines on other hosts in the cluster. The HA Master is elected from among the ESXi hosts and maintains the cluster's HA state.

Answer

The vSAN Witness Appliance residing at the secondary site.

Answer

The Platform Services Controller embedded in vCenter Server.

Answer

The external hardware load balancer connected to the vCenter Appliance.

Question 6

An administrator is setting up a new vSphere Foundation 9.0 cluster and needs to configure shared storage access using IP networks. Which VMkernel adapter service must be enabled to support software iSCSI storage traffic?

Accepted Answer

Software iSCSI traffic does not require a dedicated VMkernel service checkbox, but requires proper port binding to the iSCSI software adapter.. To use software iSCSI in ESXi, an administrator must enable the iSCSI service or bind a VMkernel port configured for iSCSI traffic.

Answer

The 'Fault Tolerance Logging' VMkernel service checkbox.

Answer

The 'Management' VMkernel service checkbox.

Answer

The 'vSphere Provisioning' VMkernel service checkbox.

Question 7

An IT planner is reviewing network topologies for a vSphere Foundation 9.0 environment. Which standard defines the encapsulation method used by Geneve tunnels when deployed with NSX in a modern data center design?

Accepted Answer

Geneve (Generic Network Virtualization Encapsulation). Geneve (Generic Network Virtualization Encapsulation) is the encapsulation protocol itself, defined in RFC 8926, and is the standard used by NSX for overlay tunnels in modern data center designs. It encapsulates Layer 2 frames within UDP, typically on port 6081, and supports extensible metadata via TLV options. NSX-T and later NSX versions use Geneve as the default overlay encapsulation.

Answer

VLAN tagging (IEEE 802.1Q)

Answer

Point-to-Point Tunneling Protocol (PPTP)

Answer

Fibre Channel over Ethernet (FCoE)

Question 8

An enterprise architect is designing a backup and recovery standard for a vSphere Foundation 9.0 environment. Which technology should be integrated with vCenter Server to enable efficient, crash-consistent or application-consistent virtual machine snapshots without placing heavy processing loads on the ESXi host CPU?

Accepted Answer

vSphere APIs for Data Protection (VADP) utilizing Changed Block Tracking (CBT).. vSphere APIs for Data Protection (VADP) allow backup vendors to offload snapshot creation and data transport using Changed Block Tracking (CBT).

Answer

Network I/O Control bandwidth throttling shares.

Answer

Fault Tolerance continuous replication logs.

Answer

Storage DRS inter-datastore cloning.

Question 9

A systems architect is evaluating storage policy designs for a vSAN datastore in a vSphere Foundation 9.0 cluster. When configuring the Failures to Resist (FTT) policy using Erasure Coding (RAID-5/6), what is the minimum number of host fault domains required for a RAID-5 storage policy?

Accepted Answer

At least 4 fault domains (hosts). RAID-5 Erasure Coding in vSAN requires a minimum of 4 fault domains (hosts) to distribute data and parity blocks effectively.

Answer

At least 3 fault domains (hosts)

Answer

At least 6 fault domains (hosts)

Answer

At least 2 fault domains (hosts)

Question 10

An architect is planning the port requirements for a vSphere Foundation 9.0 environment. Which standard TCP port must be open on firewalls between ESXi hosts and vCenter Server for primary agent communication (vpxa)?

Accepted Answer

TCP port 902. TCP port 902 is used by vCenter Server to communicate with the heartbeat agent (vpxa) on ESXi hosts.

Answer

TCP port 1433

Answer

TCP port 3389

Answer

TCP port 80