VCP-VVF Troubleshoot And Optimize Practice Test 2 — 15 Questions

Question 1

An administrator is troubleshooting high CPU usage on an ESXi host and suspects a runaway virtual machine. Using esxtop, which TWO columns in the CPU panel should the administrator examine to identify the specific VM consuming the most physical CPU resources? (Choose two.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

%RUN (Percentage of time scheduled on a physical CPU). In esxtop's CPU panel, the %RUN column shows the percentage of time each world (including a VM's worlds) was actually scheduled on a physical CPU, so a runaway VM will display a high %RUN value, making option B a direct indicator of which VM is consuming physical CPU time. The %USED column reports the percentage of physical CPU resources used by that world/VM, so option E also directly identifies the VM consuming the most physical CPU capacity. Together, %RUN and %USED let the administrator pinpoint the specific VM driving high host CPU usage. The other options are unrelated to CPU consumption: SWCUR (A) reflects current swap usage, MCTLSZ (C) reflects ballooned memory size, and DAVG (D) measures device latency, so none of them identify CPU-hungry VMs.

Answer

SWCUR (Current swap usage)

Answer

MCTLSZ (Ballooned memory size)

Answer

DAVG (Device latency)

Question 2

An administrator is troubleshooting a vSphere Distributed Switch (vDS) configuration where LACP (Link Aggregation Control Protocol) is enabled between ESXi hosts and the physical upstream switches. The port channel is down. Which command or log file should the administrator check on the ESXi host to inspect LACP state and negotiation status?

Accepted Answer

esxcli network vswitch dvs lacp status get or inspecting lacp logs in /var/log/. ESXi provides net-vmswitch and esxcli network vswitch dvs lacp commands or log inspection in /var/log/lacp.log or vpxd.log to check LACP state.

Answer

esxcli storage core path list

Answer

esxcli system ip route list

Answer

esxcli vsan cluster get

Question 3

An administrator is troubleshooting a storage performance issue on an ESXi host and wants to use esxtop to analyze disk performance. Which TWO keystrokes or views in esxtop provide storage performance statistics? (Choose two.)

Accepted Answer

Press 'd' while running esxtop to display the physical adapter / disk controller statistics view.. In esxtop, pressing 'd' switches to the disk adapter view, which shows physical adapter/disk controller statistics such as queue depth, commands per second, and latency for HBAs and storage adapters, making option A correct for analyzing storage performance. Pressing 'v' switches to the virtual disk view, which displays per-virtual-machine virtual disk statistics including read/write IOPS, latency, and throughput, making option C correct. Option B is wrong because 'c' shows CPU scheduling statistics, not storage. Option D is wrong because 'm' shows memory statistics and memory reclamation counters. Option E is wrong because 'n' shows network interface statistics, which are unrelated to disk performance.

Answer

Press 'c' while running esxtop to display CPU scheduling statistics.

Answer

Press 'm' while running esxtop to display memory reclamation statistics.

Answer

Press 'n' while running esxtop to display network interface statistics.

Question 4

An administrator is troubleshooting a high-availability failover issue in a vSphere 9.0 cluster where virtual machines on a failed host were not restarted by vSphere HA. Which THREE underlying causes could explain this failure? (Choose three.)

Accepted Answer

A complete network partition occurred where the surviving hosts cannot communicate with the isolated host and datastore heartbeats were also unavailable.. Common reasons for HA failover failure include insufficient cluster compute resources under admission control, network isolation without configured isolation response, or datastore accessibility loss affecting heartbeat files and cluster communication.

Answer

Enhanced vMotion Compatibility (EVC) mode was disabled on the cluster.

Answer

Storage I/O Control (SIOC) latency threshold was set below 10ms.

Question 5

An administrator is troubleshooting a vSphere Distributed Switch (vDS) uplink connectivity issue. The administrator suspects that a specific physical switch port connected to an ESXi host uplink (vmnic) has been disabled or misconfigured. Which vSphere Client view allows the administrator to inspect the CDP (Cisco Discovery Protocol) or LLDP (Link Layer Discovery Protocol) information received from the physical switch?

Accepted Answer

Select the vDS -> Monitor -> Uplink / Topology / Physical Switch view to inspect CDP/LLDP neighbor details.. The vSphere Client exposes CDP/LLDP neighbor information under the vDS Monitor tab in the Uplink/Topology/Physical Switch view, which shows the physical switch name, port ID, and management address learned via CDP or LLDP. This is the only supported GUI location to inspect what the physical switch advertises to the ESXi uplink. The other options either reference non-existent commands, irrelevant tabs, or unrelated licensing screens.

Answer

Run 'esxcli network cdp get' via the vCenter appliance shell.

Answer

Check the virtual machine hardware summary tab.

Answer

Open vCenter Administration -> Licensing -> Physical Switch Maps.

Question 6

An administrator notices that a virtual machine has a snapshot that has grown excessively large, consuming all free space on the datastore. Which vSphere operation should the administrator execute in the vSphere Client to safely merge the snapshot delta disks back into the base disk?

Accepted Answer

Right-click the virtual machine, navigate to Snapshots -> Consolidate (or Delete All).. The 'Consolidate' (or 'Delete All') operation in the vSphere Client snapshot manager is the supported, safe method to merge delta disks back into the base VMDK. It instructs the VMkernel to commit the snapshot chain while preserving VM state and disk consistency, and it also cleans up orphaned delta files left behind by failed snapshot operations. This is the only supported GUI action that safely re-integrates snapshot deltas without risking data corruption.

Answer

Power off the VM and run 'esxcli storage vmfs consolidate'.

Answer

Migrate the VM using Storage vMotion to a temporary folder.

Answer

Delete the snapshot files directly from the datastore browser using the delete icon.

Question 7

An administrator is troubleshooting a vSAN 9.0 stretched cluster network separation issue. Which THREE network requirements must be strictly met between the data sites and the witness site to ensure proper vSAN stretched cluster operation? (Choose three.)

Accepted Answer

Maximum latency of 10 milliseconds round-trip time (RTT) between the two primary data sites.. Option C is correct because vSAN stretched clusters require a maximum of 10 ms round-trip time (RTT) between the two primary data sites to keep synchronous replication and metadata operations within supported limits. Option D is correct because the witness site must be reachable within 100 ms RTT from each data site, which is the documented latency boundary for witness traffic and cluster quorum communication. Option E is correct because vSAN inter-site and witness traffic must have dedicated bandwidth sized for the workload, replication, and resynchronization demands; shared or undersized links can cause congestion and degraded stretched-cluster operation. Option A is not required and nested ESXi at the witness site is not a vSAN stretched-cluster network requirement. Option B is not required; disabling physical switch firewalls and spanning tree protocols across all access ports is neither a documented vSAN requirement nor a valid troubleshooting step.

Answer

Running all virtual machines in nested ESXi environments across the witness site.

Answer

Completely disabling all physical switch firewalls and spanning tree protocols across all access ports.

Question 8

An administrator is troubleshooting an ESXi 9.0 host network configuration issue where custom routes need to be added for a specific backend storage subnet reachable through a specific VMkernel gateway. Which esxcli command adds a static IPv4 route to the ESXi host network stack?

Accepted Answer

esxcli network ip route ipv4 add --gateway=192.168.100.1 --network=192.168.200.0/24. The correct syntax is 'esxcli network ip route ipv4 add' with --gateway and --network parameters, which adds a static IPv4 route to the ESXi host's network stack. This is the documented esxcli namespace for managing host routes, and it applies to the default TCP/IP stack (or a named netstack via -N). The command takes the gateway IP and the destination network in CIDR notation.

Answer

esxcli network vswitch standard route set

Answer

esxcli storage san route add

Answer

esxcli route static create --ip=192.168.200.0

Question 9

An administrator is troubleshooting a storage connectivity failure where an NFS datastore has become 'All Paths Down' (APD) or disconnected. Where should the administrator verify the NFS server export path and mount parameters in the vSphere Client?

Accepted Answer

Select the NFS datastore -> Configure -> Connectivity and Reachability tab to check server and export details.. NFS datastore configuration, server IP, and mount shares are verified under Storage -> Datastore -> Configure -> Connectivity or by re-inspecting the mount specification during datastore addition.

Answer

Open the VMkernel adapter binding table under Network Settings.

Answer

Navigate to vSphere HA -> Datastore Heartbeats.

Answer

Check the vSphere Lifecycle Manager baseline repository.

Question 10

An administrator is investigating an issue where an ESXi 9.0 host is unable to join an Active Directory domain for authentication. Which log file on the ESXi host should the administrator inspect to review authentication and joinservice errors?

Accepted Answer

/var/log/auth.log (or reviewing messages related to lsass / Active Directory authentication). ESXi authentication and Active Directory integration logs are located under /var/log/auth.log or /var/log/vpxd.log (on vCenter), or host-side join logs in /var/log/lsassd.log or similar auth logs.

Answer

/var/log/vmware/vpxd.log

Answer

/var/log/syslog.datastore

Answer

/var/log/vsan.log

Question 11

An administrator is troubleshooting a performance issue in a vSphere Foundation 9.0 environment where virtual machines are experiencing high memory latency and paging. Which THREE esxtop memory metrics or fields should the administrator examine in the memory view ('m') to diagnose the issue? (Choose three.)

Accepted Answer

SWCUR (Current swap space used). In the esxtop memory view ('m'), SWCUR (Current swap space used) is correct because it shows how much VM memory has been swapped to the ESXi swap file, and nonzero or rising values directly indicate the host is under memory pressure causing the paging and latency observed. MCTLSZ (Ballooned memory size) is correct because it reports the amount of guest memory reclaimed by the balloon driver; a large or growing balloon value confirms the host is forcing the guest to page internally, which explains high memory latency. SWTPS (Swap throughput / pages swapped per second) is correct because it measures the rate of swap-in/swap-out activity, and sustained nonzero swap throughput is the clearest indicator of active paging degrading VM performance. DAVG (Device latency) is not part of the memory view and measures storage device latency, so it does not diagnose memory paging. %CSTP (Co-stop percentage) is a CPU scheduler metric showing time vCPUs wait for co-scheduling, unrelated to memory latency or swapping.

Answer

DAVG (Device latency)

Answer

%CSTP (Co-stop percentage)

Question 12

An administrator is troubleshooting a virtual machine network connectivity failure where packets are dropped between two VMs residing on the same ESXi host connected to a standard virtual switch. Which configuration setting on the virtual switch port group could block direct internal traffic between VMs on the same host?

Accepted Answer

Misconfigured Security policies (Promiscuous Mode, MAC Address Changes, Forged Transmits) or Private VLAN (PVLAN) isolations on the switch.. Setting 'Promiscuous Mode', 'MAC Address Changes', or 'Forged Transmits' incorrectly can restrict traffic, but specifically, port security settings or blocked ports can isolate traffic. However, standard virtual switches forward traffic locally unless blocked by security policies or isolated private VLANs (PVLANs) on vDS.

Answer

Enabling Storage I/O Control on the switch uplinks.

Answer

Setting the VMkernel MTU to 1500 bytes.

Answer

Disabling Enhanced vMotion Compatibility (EVC) on the virtual switch.

Question 13

An administrator is troubleshooting a vCenter Server 9.0 appliance upgrade failure. Where are the installation and upgrade log files stored on the VCSA filesystem for troubleshooting?

Accepted Answer

/var/log/vmware/applmgmt/ and /var/log/firstboot/ (or installer logs in /var/log/). VCSA installer and upgrade logs are located under /var/log/autodeploy or /var/log/vmware/applmgmt/ or installer logs in /var/log/opsli/ or /var/log/firstboot/ depending on the phase. Specifically, /var/log/vmware/applmgmt/ and /var/log/firstboot/ contain upgrade logs.

Answer

/usr/lib/vmware/vpxd/upgrade_error.log

Answer

/etc/vmware/upgrade/psod.log

Answer

/vmfs/volumes/datastore/vcsa-logs.txt

Question 14

An administrator is troubleshooting a storage performance issue on a vSAN 9.0 cluster. Which THREE performance counters or metrics in vSAN performance service or Aria Operations are critical for identifying vSAN bottlenecked workloads? (Choose three.)

Accepted Answer

vSAN Congestion counters (such as adaptive queue congestion or memory buffer congestion). Option A is correct because vSAN Congestion counters, including adaptive queue congestion and memory buffer congestion, directly reveal when the vSAN stack's internal queues or memory buffers are saturated, which is a primary indicator of a bottlenecked workload. Option C is correct because vSAN Object Read and Write Latency measures the end-to-end latency experienced by virtual machine I/O at the object level, making it the most direct metric for identifying workloads that are being throttled or delayed by storage contention. Option E is correct because vSAN IOPS and Throughput utilization per disk group shows how hard each disk group's capacity and cache tiers are being driven, exposing whether a specific disk group is saturated and limiting performance. Option B does not belong because ESXi host CPU core thermal temperature sensor logs relate to physical processor thermal conditions, not vSAN storage I/O path performance. Option D does not belong because vCenter Database connection pool utilization rate reflects vCenter Server's internal database connectivity, which is unrelated to vSAN datastore workload bottlenecks.

Answer

ESXi host CPU core thermal temperature sensor logs

Answer

vCenter Database connection pool utilization rate

Question 15

An administrator is troubleshooting a network issue where jumbo frames (MTU 9000) are failing across a vSphere Distributed Switch (vDS) and VMkernel adapters. Which esxcli command can the administrator execute on the ESXi host to test MTU path reachability with large ping packets and DF (Don't Fragment) bits set?

Accepted Answer

vmkping -s 8972 -d . ESXi supports pinging with custom packet sizes and DF bits via 'vmkping -s -d '.

Answer

ping -c 4 -s 9000 <destination_IP>

Answer

esxcli network ping --mtu=9000 --ip=<destination_IP>

Answer

esxcli vswitch jumbo test -p 9000