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CompTIA SK0-005 Practice Test 69

Question 680

A change board is planning a verified response to this server event: A replacement storage controller shows write-through mode and low database throughput despite healthy disks and plenty of free capacity. For the Write cache battery and storage performance issue, which response elements belong in the approved plan? Select TWO answers.

  1. Inspect cache-protection health and replace or restore supported battery/flash protection before using safe cache policy.
  2. Correlate ECC and memory training events with physical slots, then replace faulty qualified DIMMs using approved service steps.
  3. A single-fabric outage causes no I/O loss and service returns to expected latency on supported paths.
  4. Force unprotected write-back mode to hide a failing cache battery.
  5. Examine controller cache mode, BBU/flash status, workload write latency and vendor alerts.

Explanation

Correct Answer

A:

Write-back caching requires reliable protected power or flash persistence; disabling cache can raise latency for safety. This is the appropriate targeted correction for Write cache battery and storage performance.

E:

These observations investigate the exact Write cache battery and storage performance failure rather than unrelated components. Confirm remediation through: Protected cache operation is restored and write latency improves without compromising in-flight write safety.

Incorrect Answers

B:

This statement concerns Correctable ECC error escalation, a different Server+ technical control. It does not directly address the reported Write cache battery and storage performance fault or prove its repair.

C:

This statement concerns SAN fabric multipath failover and latency, a different Server+ technical control. It does not directly address the reported Write cache battery and storage performance fault or prove its repair.

D:

This is the unsafe shortcut in the Write cache battery and storage performance scenario, not a justified remediation or diagnostic. Incident: A replacement storage controller shows write-through mode and low database throughput despite healthy disks and plenty of free capacity.

Question 681

A server administrator is investigating a server issue involving boot loader and failed update recovery: After a kernel update, a server hangs at boot because the initramfs lacks the storage driver needed for its root filesystem. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.

  1. Use host and guest metrics to identify hypervisor resource contention, then right-size or rebalance allocations.
  2. Trace application errors, dependencies, configuration and resource metrics; restore a supported version or correct the actual limit.
  3. Restore the supported boot entry or known-good kernel and rebuild boot images as needed using tested recovery media.
  4. Reformat the system volume immediately when a boot entry or driver error appears.

Explanation

Correct Answer

C:

Before rollout, confirm the problem with: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. For this case, After a kernel update, a server hangs at boot because the initramfs lacks the storage driver needed for its root filesystem.

Incorrect Answers

A:

For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries.

B:

For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages.

D:

This is the unsafe shortcut in the Boot loader and failed update recovery scenario, not a justified remediation or diagnostic. Incident: After a kernel update, a server hangs at boot because the initramfs lacks the storage driver needed for its root filesystem.

Question 682

While reviewing the CompTIA Server+ administration incident, a technician learns: After a kernel update, a server hangs at boot because the initramfs lacks the storage driver needed for its root filesystem. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages.
  2. A close timeline between change and failure is a hypothesis to test, not automatic proof of cause.
  3. Incident resolution includes timely escalation, safe rollback and documented follow-through, not just a green monitor.
  4. Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

Explanation

Correct Answer

A:

This is the controlling principle for the reported Boot loader and failed update recovery incident. Scenario: After a kernel update, a server hangs at boot because the initramfs lacks the storage driver needed for its root filesystem.

Incorrect Answers

B:

This statement concerns OS patch regression and rollback, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair. For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. The desired recovery condition is: The host boots the approved OS reliably through several cold boots with disk access intact.

C:

This statement concerns Escalation, rollback and post-incident closure, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair. For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. The desired recovery condition is: The host boots the approved OS reliably through several cold boots with disk access intact.

D:

This statement concerns Routing and stateful firewall asymmetry, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair. For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. The desired recovery condition is: The host boots the approved OS reliably through several cold boots with disk access intact.

Question 683

Before a server change is approved, the on-call engineer receives this incident report: After a kernel update, a server hangs at boot because the initramfs lacks the storage driver needed for its root filesystem. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Reformat the system volume immediately when a boot entry or driver error appears.
  2. Correlate stack traces, error codes, database connection metrics, package versions and deployment history.
  3. Inspect change records, kernel and driver logs, known advisories and control-host comparison tests.
  4. Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries.

Explanation

Correct Answer

D:

These observations investigate the exact Boot loader and failed update recovery failure rather than unrelated components. Incident: After a kernel update, a server hangs at boot because the initramfs lacks the storage driver needed for its root filesystem.

Incorrect Answers

A:

Instead, the supported correction is: Restore the supported boot entry or known-good kernel and rebuild boot images as needed using tested recovery media. This is the unsafe shortcut in the Boot loader and failed update recovery scenario, not a justified remediation or diagnostic.

B:

For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. This statement concerns Application crash and dependency triage, a different Server+ technical control.

C:

For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. This statement concerns OS patch regression and rollback, a different Server+ technical control.

Question 684

After the team implements a targeted remediation for Boot loader and failed update recovery, the original incident was: After a kernel update, a server hangs at boot because the initramfs lacks the storage driver needed for its root filesystem. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. Hardware reports no recurring ECC faults and memory validation passes under representative load.
  2. Application latency normalizes when host contention is reduced without hiding alerts.
  3. Service is restored within response targets, temporary risk is removed and a reproducible fix is documented.
  4. The host boots the approved OS reliably through several cold boots with disk access intact.

Explanation

Correct Answer

D:

Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages.

Incorrect Answers

A:

This statement concerns Correctable ECC error escalation, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair. For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. The desired recovery condition is: The host boots the approved OS reliably through several cold boots with disk access intact.

B:

This statement concerns Hypervisor contention causing guest latency, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair. For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. The desired recovery condition is: The host boots the approved OS reliably through several cold boots with disk access intact.

C:

This statement concerns Escalation, rollback and post-incident closure, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair.

Question 685

A change board is planning a verified response to this server event: After a kernel update, a server hangs at boot because the initramfs lacks the storage driver needed for its root filesystem. For the Boot loader and failed update recovery issue, which response elements belong in the approved plan? Select ONE best answer.

  1. Compare changed package and driver versions, confirm a supported regression and execute an approved rollback or fixed update.
  2. Read RAID member status, SMART/media diagnostics, backplane events, parity consistency and backup freshness.
  3. Restore the supported boot entry or known-good kernel and rebuild boot images as needed using tested recovery media. Then validate the change by confirming: The host boots the approved OS reliably through several cold boots with disk access intact.
  4. Reformat the system volume immediately when a boot entry or driver error appears.

Explanation

Correct Answer

C:

Before modifying systems, gather: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries.

Incorrect Answers

A:

For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair.

B:

For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. This statement concerns RAID degraded state and predictive drive failure, a different Server+ technical control.

D:

This is the unsafe shortcut in the Boot loader and failed update recovery scenario, not a justified remediation or diagnostic. Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages.

Question 686

A server administrator is investigating a server issue involving boot loader and failed update recovery: A maintenance job changes UEFI boot order and the host attempts network boot instead of its installed OS disk. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.

  1. Identify whether blocks, inodes, quotas or reserved space is exhausted; reclaim or expand only the constrained resource.
  2. Reformat the system volume immediately when a boot entry or driver error appears.
  3. Correct access/trunk VLAN membership and allowed VLAN lists while preserving intended segmentation.
  4. Restore the supported boot entry or known-good kernel and rebuild boot images as needed using tested recovery media.

Explanation

Correct Answer

D:

Before rollout, confirm the problem with: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. For this case, A maintenance job changes UEFI boot order and the host attempts network boot instead of its installed OS disk.

Incorrect Answers

A:

For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages.

B:

This is the unsafe shortcut in the Boot loader and failed update recovery scenario, not a justified remediation or diagnostic. Incident: A maintenance job changes UEFI boot order and the host attempts network boot instead of its installed OS disk.

C:

For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. This statement concerns Incorrect switch VLAN trunk allowance, a different Server+ technical control.

Question 687

While reviewing the CompTIA Server+ administration incident, a technician learns: A maintenance job changes UEFI boot order and the host attempts network boot instead of its installed OS disk. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages.
  2. Filesystem write failures can arise from inode or quota limits as well as free-block exhaustion.
  3. Tagged VLAN traffic must be permitted end-to-end; routing changes do not repair a missing layer-two VLAN path.
  4. Intermittent IP conflicts and unauthorized DHCP options can appear as random server outages while switch ports remain healthy.

Explanation

Correct Answer

A:

This is the controlling principle for the reported Boot loader and failed update recovery incident. Scenario: A maintenance job changes UEFI boot order and the host attempts network boot instead of its installed OS disk.

Incorrect Answers

B:

This statement concerns Filesystem full, inode exhaustion and quotas, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair. For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. The desired recovery condition is: The host boots the approved OS reliably through several cold boots with disk access intact.

C:

This statement concerns Incorrect switch VLAN trunk allowance, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair. For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. The desired recovery condition is: The host boots the approved OS reliably through several cold boots with disk access intact.

D:

This statement concerns DHCP and IP address conflict isolation, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair. For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. The desired recovery condition is: The host boots the approved OS reliably through several cold boots with disk access intact.

Question 688

Before a server change is approved, the on-call engineer receives this incident report: A maintenance job changes UEFI boot order and the host attempts network boot instead of its installed OS disk. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Reformat the system volume immediately when a boot entry or driver error appears.
  2. Compare CPU ready, host memory reclaim, NUMA locality, datastore latency and workload peaks.
  3. Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries.
  4. Capture DHCP offers and ARP announcements, inspect scope exclusions, MAC addresses and gateway options.

Explanation

Correct Answer

C:

These observations investigate the exact Boot loader and failed update recovery failure rather than unrelated components. Incident: A maintenance job changes UEFI boot order and the host attempts network boot instead of its installed OS disk.

Incorrect Answers

A:

Instead, the supported correction is: Restore the supported boot entry or known-good kernel and rebuild boot images as needed using tested recovery media.

B:

For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. This statement concerns Hypervisor contention causing guest latency, a different Server+ technical control.

D:

For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. This statement concerns DHCP and IP address conflict isolation, a different Server+ technical control.

Question 689

After the team implements a targeted remediation for Boot loader and failed update recovery, the original incident was: A maintenance job changes UEFI boot order and the host attempts network boot instead of its installed OS disk. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. The fault disappears under an approved version with no unrelated security controls disabled.
  2. Connections complete through approved paths in both directions without broad firewall bypasses.
  3. The host boots the approved OS reliably through several cold boots with disk access intact.
  4. Only intended VLANs traverse the trunk and test VMs reach their approved peers.

Explanation

Correct Answer

C:

Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages.

Incorrect Answers

A:

This statement concerns OS patch regression and rollback, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair. For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. The desired recovery condition is: The host boots the approved OS reliably through several cold boots with disk access intact.

B:

This statement concerns Routing and stateful firewall asymmetry, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair. For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. The desired recovery condition is: The host boots the approved OS reliably through several cold boots with disk access intact.

D:

This statement concerns Incorrect switch VLAN trunk allowance, a different Server+ technical control. It does not directly address the reported Boot loader and failed update recovery fault or prove its repair.

Question 690

A change board is planning a verified response to this server event: A maintenance job changes UEFI boot order and the host attempts network boot instead of its installed OS disk. For the Boot loader and failed update recovery issue, which response elements belong in the approved plan? Select TWO answers.

  1. Trace conflicting ARP/DHCP responses, eliminate overlapping assignments or rogue offers and correct lease options.
  2. Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries.
  3. Reformat the system volume immediately when a boot entry or driver error appears.
  4. Restore the supported boot entry or known-good kernel and rebuild boot images as needed using tested recovery media.
  5. The fault disappears under an approved version with no unrelated security controls disabled.

Explanation

Correct Answer

B:

These observations investigate the exact Boot loader and failed update recovery failure rather than unrelated components. The expected technical relationship is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages.

D:

Before rollout, confirm the problem with: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries. This is the appropriate targeted correction for Boot loader and failed update recovery.

Incorrect Answers

A:

For this incident, the relevant principle is: Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages. The desired recovery condition is: The host boots the approved OS reliably through several cold boots with disk access intact.

C:

Instead, the supported correction is: Restore the supported boot entry or known-good kernel and rebuild boot images as needed using tested recovery media. Boot failures may arise before services start; distinguish firmware/bootloader problems from application outages.

E:

A targeted investigation checks: Inspect console boot errors, UEFI order, boot partition, initramfs modules and prior working entries.

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