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CompTIA SK0-005 Practice Test 30

Question 290

A change board is planning a verified response to this server event: A latency-sensitive VM is given eight vCPUs on a busy host but its ready time increases and application response worsens. For the Hypervisor resource overcommit and reservations issue, which response elements belong in the approved plan? Select TWO answers.

  1. The VM retains approved network connectivity through migration without gaining unauthorized subnet reachability.
  2. Inspect host CPU utilization and ready time, balloon/swap counters, NUMA placement and VM performance curves.
  3. Right-size vCPU and RAM allocations using contention telemetry and supportable reservations or resource controls.
  4. Use application-aware health checks, appropriate rise/fall thresholds and connection draining for deployments.
  5. Increase every VM's configured vCPU and RAM without checking host contention.

Explanation

Correct Answer

B:

These observations investigate the exact Hypervisor resource overcommit and reservations failure rather than unrelated components. Confirm remediation through: Peak workload runs within latency targets without excessive CPU ready or host memory reclamation.

C:

Allocated virtual resources are not guaranteed physically available under contention; vCPU ready and memory reclaim can harm latency. This is the appropriate targeted correction for Hypervisor resource overcommit and reservations.

Incorrect Answers

A:

For this incident, the relevant principle is: Allocated virtual resources are not guaranteed physically available under contention; vCPU ready and memory reclaim can harm latency. This statement concerns Virtual switch isolation and port group assignment, a different Server+ technical control.

D:

For this incident, the relevant principle is: Allocated virtual resources are not guaranteed physically available under contention; vCPU ready and memory reclaim can harm latency. This statement concerns Load balancer health checking, a different Server+ technical control.

E:

Incident: A latency-sensitive VM is given eight vCPUs on a busy host but its ready time increases and application response worsens.

Question 291

A server administrator is investigating a server issue involving vm snapshot use and backup boundaries: A production VM retains a six-month snapshot that grows until the datastore is nearly full. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.

  1. Run containers with least privileges, limited mounts and capabilities, verified images and supported host hardening.
  2. Use snapshots only as short-lived change rollback points and maintain independently recoverable, application-consistent backups.
  3. Keep snapshots forever and classify them as offsite disaster-recovery backups.
  4. Verify migration CPU compatibility, shared/storage accessibility and destination resource headroom before moving VMs.

Explanation

Correct Answer

B:

Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A successful outcome is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

Incorrect Answers

A:

That option would run containers with least privileges, limited mounts and capabilities, verified images and supported host hardening, but it addresses a different concern. Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

C:

This is the unsafe shortcut in the VM snapshot use and backup boundaries scenario, not a justified remediation or diagnostic. Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

D:

That option would verify migration CPU compatibility, shared/storage accessibility and destination resource headroom before moving VMs, but it addresses a different concern. Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

Question 292

While reviewing the CompTIA Server+ administration incident, a technician learns: A production VM retains a six-month snapshot that grows until the datastore is nearly full. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. Automated commands must protect credentials and report failures accurately; output success is not evidence of task completion.
  2. Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.
  3. Virtual network topology must be consistent across hosts, and hypervisor port groups enforce connectivity and isolation.
  4. Allocated virtual resources are not guaranteed physically available under contention; vCPU ready and memory reclaim can harm latency.

Explanation

Correct Answer

B:

Applying it leads to this operational action: Use snapshots only as short-lived change rollback points and maintain independently recoverable, application-consistent backups. The acceptance test is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

Incorrect Answers

A:

This statement concerns Script secret handling and exit-code validation, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair. For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability. The desired recovery condition is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

C:

This statement concerns Virtual switch isolation and port group assignment, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair. For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability. The desired recovery condition is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

D:

This statement concerns Hypervisor resource overcommit and reservations, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair. For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability. The desired recovery condition is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

Question 293

Before a server change is approved, the on-call engineer receives this incident report: A production VM retains a six-month snapshot that grows until the datastore is nearly full. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Inspect host CPU utilization and ready time, balloon/swap counters, NUMA placement and VM performance curves.
  2. Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability.
  3. Keep snapshots forever and classify them as offsite disaster-recovery backups.
  4. Inspect container runtime flags, privileged status, mounted paths, image digest and host patch level.

Explanation

Correct Answer

B:

These observations investigate the exact VM snapshot use and backup boundaries failure rather than unrelated components. The expected technical relationship is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

Incorrect Answers

A:

For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability.

C:

This is the unsafe shortcut in the VM snapshot use and backup boundaries scenario, not a justified remediation or diagnostic. Discriminate using: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability.

D:

For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. This statement concerns Containers and host isolation, a different Server+ technical control.

Question 294

After the team implements a targeted remediation for VM snapshot use and backup boundaries, the original incident was: A production VM retains a six-month snapshot that grows until the datastore is nearly full. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. Newly deployed hosts match a supported baseline with documented provenance and no unapproved critical gaps.
  2. Expired snapshots are consolidated safely and a separate tested backup can restore the VM.
  3. The VM migrates without guest interruption and maintains its workload performance after placement.
  4. The VM retains approved network connectivity through migration without gaining unauthorized subnet reachability.

Explanation

Correct Answer

B:

Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. The remediation is: Use snapshots only as short-lived change rollback points and maintain independently recoverable, application-consistent backups.

Incorrect Answers

A:

This statement concerns Golden image lifecycle and OS support, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair. For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability. The desired recovery condition is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

C:

This statement concerns Live migration compatibility and resource headroom, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair. For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability. The desired recovery condition is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

D:

This statement concerns Virtual switch isolation and port group assignment, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair.

Question 295

A change board is planning a verified response to this server event: A production VM retains a six-month snapshot that grows until the datastore is nearly full. For the VM snapshot use and backup boundaries issue, which response elements belong in the approved plan? Select ONE best answer.

  1. Inspect boot mode, partition-table format, Secure Boot state, boot entries and installation media support.
  2. Keep snapshots forever and classify them as offsite disaster-recovery backups.
  3. Use snapshots only as short-lived change rollback points and maintain independently recoverable, application-consistent backups. Then validate the change by confirming: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.
  4. Right-size vCPU and RAM allocations using contention telemetry and supportable reservations or resource controls.

Explanation

Correct Answer

C:

Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

Incorrect Answers

A:

That option would inspect boot mode, partition-table format, Secure Boot state, boot entries and installation media support, but it addresses a different concern. Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

B:

This is the unsafe shortcut in the VM snapshot use and backup boundaries scenario, not a justified remediation or diagnostic. Incident: A production VM retains a six-month snapshot that grows until the datastore is nearly full.

D:

This statement concerns Hypervisor resource overcommit and reservations, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair.

Question 296

A server administrator is investigating a server issue involving vm snapshot use and backup boundaries: A team treats a hypervisor snapshot as the only recovery copy before a risky operating-system upgrade. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.

  1. Set authoritative zone records and split-view policy correctly, then validate resolver paths, TTL and cache expiration.
  2. Keep snapshots forever and classify them as offsite disaster-recovery backups.
  3. Use application-aware health checks, appropriate rise/fall thresholds and connection draining for deployments.
  4. Use snapshots only as short-lived change rollback points and maintain independently recoverable, application-consistent backups.

Explanation

Correct Answer

D:

Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

Incorrect Answers

A:

That option would set authoritative zone records and split-view policy correctly, then validate resolver paths, TTL and cache expiration, but it addresses a different concern. Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

B:

This is the unsafe shortcut in the VM snapshot use and backup boundaries scenario, not a justified remediation or diagnostic. Incident: A team treats a hypervisor snapshot as the only recovery copy before a risky operating-system upgrade.

C:

That option would use application-aware health checks, appropriate rise/fall thresholds and connection draining for deployments, but it addresses a different concern. Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability.

Question 297

While reviewing the CompTIA Server+ administration incident, a technician learns: A team treats a hypervisor snapshot as the only recovery copy before a risky operating-system upgrade. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. DNS answers depend on resolver selection, authoritative records and caching; a ping of one host does not validate all name-resolution paths.
  2. Network boot is a high-trust supply chain; authenticated image provenance and secret protection matter as much as automation speed.
  3. Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.
  4. A transport-level open port may not prove application readiness, and graceful draining protects in-flight sessions.

Explanation

Correct Answer

C:

Applying it leads to this operational action: Use snapshots only as short-lived change rollback points and maintain independently recoverable, application-consistent backups.

Incorrect Answers

A:

This statement concerns DNS split-horizon and resolver troubleshooting, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair. For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability. The desired recovery condition is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

B:

This statement concerns PXE and unattended installation integrity, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair. For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability. The desired recovery condition is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

D:

This statement concerns Load balancer health checking, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair. For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability. The desired recovery condition is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

Question 298

Before a server change is approved, the on-call engineer receives this incident report: A team treats a hypervisor snapshot as the only recovery copy before a risky operating-system upgrade. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Trace DHCP/PXE boot source, image hashes and signatures, access ACLs and answer-file permissions.
  2. Keep snapshots forever and classify them as offsite disaster-recovery backups.
  3. Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability.
  4. Inspect host CPU utilization and ready time, balloon/swap counters, NUMA placement and VM performance curves.

Explanation

Correct Answer

C:

These observations investigate the exact VM snapshot use and backup boundaries failure rather than unrelated components. Incident: A team treats a hypervisor snapshot as the only recovery copy before a risky operating-system upgrade.

Incorrect Answers

A:

For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

B:

Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

D:

For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. This statement concerns Hypervisor resource overcommit and reservations, a different Server+ technical control.

Question 299

After the team implements a targeted remediation for VM snapshot use and backup boundaries, the original incident was: A team treats a hypervisor snapshot as the only recovery copy before a risky operating-system upgrade. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. Internal and external clients resolve to their intended addresses consistently after cache expiry.
  2. The VM retains approved network connectivity through migration without gaining unauthorized subnet reachability.
  3. The workload performs its required task without unnecessary host capabilities or filesystem access.
  4. Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

Explanation

Correct Answer

D:

Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

Incorrect Answers

A:

This statement concerns DNS split-horizon and resolver troubleshooting, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair.

B:

This statement concerns Virtual switch isolation and port group assignment, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair. For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability. The desired recovery condition is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

C:

This statement concerns Containers and host isolation, a different Server+ technical control. It does not directly address the reported VM snapshot use and backup boundaries fault or prove its repair. For this incident, the relevant principle is: Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. A targeted investigation checks: Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability. The desired recovery condition is: Expired snapshots are consolidated safely and a separate tested backup can restore the VM.

Question 300

A change board is planning a verified response to this server event: A team treats a hypervisor snapshot as the only recovery copy before a risky operating-system upgrade. For the VM snapshot use and backup boundaries issue, which response elements belong in the approved plan? Select THREE answers.

  1. Use application-aware health checks, appropriate rise/fall thresholds and connection draining for deployments.
  2. Review EVC/CPU compatibility, datastore visibility, network mapping and free host capacity.
  3. Keep snapshots forever and classify them as offsite disaster-recovery backups.
  4. Expired snapshots are consolidated safely and a separate tested backup can restore the VM.
  5. Use snapshots only as short-lived change rollback points and maintain independently recoverable, application-consistent backups.
  6. Inspect snapshot tree age/size, delta growth, datastore free space and backup restore-point availability.

Explanation

Correct Answer

D:

Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. This evidence tests whether the original VM snapshot use and backup boundaries weakness has been corrected under realistic conditions.

E:

Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups. This is the appropriate targeted correction for VM snapshot use and backup boundaries.

F:

These observations investigate the exact VM snapshot use and backup boundaries failure rather than unrelated components. Use findings to decide whether to: Use snapshots only as short-lived change rollback points and maintain independently recoverable, application-consistent backups.

Incorrect Answers

A:

That option would use application-aware health checks, appropriate rise/fall thresholds and connection draining for deployments, but it addresses a different concern. Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

B:

That option would review EVC/CPU compatibility, datastore visibility, network mapping and free host capacity, but it addresses a different concern. Snapshots depend on the underlying datastore and often have performance/space costs; they are not independent backups.

C:

Incident: A team treats a hypervisor snapshot as the only recovery copy before a risky operating-system upgrade.

CompTIA Server+ Certification Exam (SK0-005) Practice Tests