VCP Quality Assurance & Improvement 3 — Questions and Answers
Question 1: Which vSphere DRS automation level requires manual administrator approval before migrating VMs?
- Fully Automated
- Partially Automated
- Manual (Correct answer)
- Conservative
Correct answer: Manual
In Manual DRS mode, vSphere generates migration recommendations but requires administrator approval before any VM is moved.
Question 2: What is the purpose of vSphere Storage I/O Control (SIOC)?
- To balance VM CPU load across hosts
- To prioritize datastore I/O during contention (Correct answer)
- To automatically provision new datastores
- To replicate data between datastores
Correct answer: To prioritize datastore I/O during contention
SIOC monitors datastore latency and throttles lower-priority VMs' I/O to ensure higher-priority VMs get adequate storage performance during contention.
Question 3: An administrator notices vSphere HA admission control is blocking VM power-ons. What does this indicate?
- A host has failed in the cluster
- The cluster lacks resources to tolerate the configured number of host failures (Correct answer)
- DRS is disabled in the cluster
- vCenter Server is unreachable
Correct answer: The cluster lacks resources to tolerate the configured number of host failures
HA admission control enforces resource reservations to guarantee failover capacity, blocking power-ons when insufficient resources exist.
Question 4: Which vSphere feature provides zero-downtime protection by maintaining a continuous mirror of a VM on a secondary host?
- vSphere HA
- vSphere DRS
- vSphere Fault Tolerance (Correct answer)
- vSphere Replication
Correct answer: vSphere Fault Tolerance
vSphere Fault Tolerance creates a live shadow VM on a secondary host that takes over instantly if the primary host fails, providing zero RPO and RTO.
Question 5: What is the primary function of the vSphere Distributed Resource Scheduler (DRS) imbalance metric?
- Measure network bandwidth utilization across hosts
- Quantify CPU and memory load imbalance across cluster hosts (Correct answer)
- Track storage latency across datastores
- Monitor VM-to-host ratio in the cluster
Correct answer: Quantify CPU and memory load imbalance across cluster hosts
The DRS imbalance metric measures how unevenly CPU and memory resources are distributed across cluster hosts, triggering migrations to rebalance.
Question 6: Which vCenter Server feature allows administrators to set performance baselines and alert when metrics deviate significantly?
- vSphere Alarms (Correct answer)
- Performance Charts
- Health Status Dashboard
- vSphere Events
Correct answer: vSphere Alarms
vSphere Alarms can be configured with triggers based on performance thresholds to alert administrators when metrics exceed defined limits.
Question 7: A VM's memory swapping rate is high on an ESXi host. What is the most appropriate corrective action?
- Increase the VM's virtual disk size
- Add physical memory to the host or migrate the VM to a host with more free memory (Correct answer)
- Decrease the VM's memory reservation
- Enable memory compression on the VM
Correct answer: Add physical memory to the host or migrate the VM to a host with more free memory
High memory swapping indicates severe memory contention; adding host RAM or migrating the VM to a less-loaded host resolves the root cause.
VCP Quality Assurance & Improvement 3
Which vSphere DRS automation level requires manual administrator approval before migrating VMs?