VCP Quality Assurance & Improvement 5

Question 1

Which vSphere configuration maximum should be monitored to ensure cluster quality and scalability?

Accepted Answer

All VMware-published configuration maximums for the deployed vSphere version

Answer

VMware publishes configuration maximums per vSphere version; exceeding any of them can cause instability and is unsupported.

Question 2

What does a consistently high 'Co-Stop' (CSTP) metric in esxtop indicate for a virtual machine?

Accepted Answer

The VM's vCPUs are frequently forced to wait for other vCPUs to be co-scheduled simultaneously

Answer

Co-Stop occurs when a multi-vCPU VM's virtual CPUs cannot all be scheduled simultaneously, indicating CPU resource contention for SMP VMs.

Question 3

An administrator wants to ensure consistent VM performance during maintenance windows. Which vSphere feature should they use to validate changes don't degrade performance?

Accepted Answer

vSphere Performance Charts before and after comparison

Answer

Comparing vCenter Performance Charts before and after changes provides quantitative evidence of whether the change improved, degraded, or maintained performance.

Question 4

Which ESXi storage path selection policy should be used for active-active storage arrays to improve I/O performance and quality?

Accepted Answer

Round Robin

Answer

Round Robin distributes I/O across all available paths to active-active arrays, maximizing throughput and providing path-level load balancing.

Question 5

What is the recommended approach for capacity planning quality assurance in a vSphere environment?

Accepted Answer

Maintain headroom by keeping average cluster utilization below 80% to handle failures and spikes

Answer

Keeping average cluster utilization below 80% ensures sufficient headroom for host failure scenarios, traffic spikes, and HA failover resource requirements.

VCP - VMware Certified Professional Practice Test

VCP - VMware Certified Professional Practice Test

VCP Quality Assurance & Improvement 5