VCP Quality Assurance & Improvement 2 — Questions and Answers
Question 1: Which vSphere feature automatically restarts virtual machines on another host when a host failure is detected?
- vSphere DRS
- vSphere HA (Correct answer)
- vSphere FT
- vSphere vMotion
Correct answer: vSphere HA
vSphere HA monitors hosts and automatically restarts VMs on surviving hosts when a host failure is detected.
Question 2: In vSphere, what metric is used to measure the percentage of time a VM is waiting for CPU resources?
- CPU Ready (Correct answer)
- CPU Usage
- CPU Demand
- CPU Costop
Correct answer: CPU Ready
CPU Ready measures the percentage of time a VM is in a ready state waiting to be scheduled on a physical CPU.
Question 3: Which vCenter Server alarm action can notify administrators when a datastore reaches a critical capacity threshold?
- Send email notification
- Run script
- Send SNMP trap
- All of the above (Correct answer)
Correct answer: All of the above
vCenter alarms support multiple actions including email notifications, script execution, and SNMP traps simultaneously.
Question 4: What is the recommended maximum CPU Ready value (%) that indicates acceptable VM performance in vSphere?
- 1%
- 5% (Correct answer)
- 10%
- 20%
Correct answer: 5%
A CPU Ready value above 5% typically indicates CPU contention and potential performance degradation for the VM.
Question 5: Which vSphere tool provides real-time performance charts and historical trending for ESXi hosts and VMs?
- vRealize Operations Manager
- vCenter Performance Charts (Correct answer)
- ESXi Shell
- vSphere Web Client Log Browser
Correct answer: vCenter Performance Charts
vCenter Performance Charts provide real-time and historical performance data for hosts, VMs, clusters, and datastores.
Question 6: A VM experiences high memory balloon driver activity. What does this indicate about the ESXi host?
- The host has excess free memory
- The host is experiencing memory contention (Correct answer)
- The VM has too much memory allocated
- The host's memory hardware is failing
Correct answer: The host is experiencing memory contention
High balloon driver activity indicates the ESXi host is reclaiming memory from VMs due to memory contention on the host.
Question 7: Which log file on an ESXi host contains information about VMkernel events and hardware status?
- /var/log/syslog.log
- /var/log/vmkernel.log (Correct answer)
- /var/log/hostd.log
- /var/log/vpxa.log
Correct answer: /var/log/vmkernel.log
The vmkernel.log file records VMkernel events, device errors, and hardware-related messages on ESXi hosts.
VCP Quality Assurance & Improvement 2
Which vSphere feature automatically restarts virtual machines on another host when a host failure is detected?