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CompTIA SK0-005 Practice Test 63

Question 620

A change board is planning a verified response to this server event: A host reports intermittent power-loss events even though its PSU lights are green; the UPS logs overloads during peak usage. For the PSU and power event isolation issue, which response elements belong in the approved plan? Select TWO answers.

  1. Replace random PSUs without checking the shared upstream power source.
  2. Inspect forward/return routing, gateway selection and stateful firewall rules; correct the narrow route or policy.
  3. Review PSU fault logs, UPS/PDU event history, load measurements and path diagrams.
  4. Hardware reports no recurring ECC faults and memory validation passes under representative load.
  5. Trace and test PSU, cables, PDU, UPS and breaker paths under a safely controlled maintenance procedure.

Explanation

Correct Answer

C:

These observations investigate the exact PSU and power event isolation failure rather than unrelated components. Incident: A host reports intermittent power-loss events even though its PSU lights are green; the UPS logs overloads during peak usage.

E:

A successful outcome is: The host survives the designed single-power-path failure without reset or overcurrent. This is the appropriate targeted correction for PSU and power event isolation.

Incorrect Answers

A:

Power redundancy requires end-to-end capacity and isolation, not merely green status indicators on redundant modules.

B:

For this incident, the relevant principle is: Power redundancy requires end-to-end capacity and isolation, not merely green status indicators on redundant modules. It does not directly address the reported PSU and power event isolation fault or prove its repair.

D:

For this incident, the relevant principle is: Power redundancy requires end-to-end capacity and isolation, not merely green status indicators on redundant modules. Incident: A host reports intermittent power-loss events even though its PSU lights are green; the UPS logs overloads during peak usage.

Question 621

A server administrator is investigating a server issue involving correctable ecc error escalation: A server shows increasing corrected ECC errors concentrated in one memory channel, but applications have not yet crashed. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.

  1. Correlate ECC and memory training events with physical slots, then replace faulty qualified DIMMs using approved service steps.
  2. Inspect cooling path, heatsink mounting and sensor telemetry, then correct the thermal fault before increasing load.
  3. Trace and test PSU, cables, PDU, UPS and breaker paths under a safely controlled maintenance procedure.
  4. Ignore steadily rising ECC errors because the operating system still runs.

Explanation

Correct Answer

A:

Before rollout, confirm the problem with: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics.

Incorrect Answers

B:

That option would inspect cooling path, heatsink mounting and sensor telemetry, then correct the thermal fault before increasing load, but it addresses a different concern. Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

C:

That option would trace and test PSU, cables, PDU, UPS and breaker paths under a safely controlled maintenance procedure, but it addresses a different concern. Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

D:

This is the unsafe shortcut in the Correctable ECC error escalation scenario, not a justified remediation or diagnostic. Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

Question 622

While reviewing the CompTIA Server+ administration incident, a technician learns: A server shows increasing corrected ECC errors concentrated in one memory channel, but applications have not yet crashed. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. Intermittent IP conflicts and unauthorized DHCP options can appear as random server outages while switch ports remain healthy.
  2. Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.
  3. Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults.
  4. Unusual outbound volume and destinations may indicate exfiltration; investigation must preserve evidence and scope blast radius.

Explanation

Correct Answer

B:

Applying it leads to this operational action: Correlate ECC and memory training events with physical slots, then replace faulty qualified DIMMs using approved service steps.

Incorrect Answers

A:

This statement concerns DHCP and IP address conflict isolation, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair. For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. A targeted investigation checks: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics. The desired recovery condition is: Hardware reports no recurring ECC faults and memory validation passes under representative load.

C:

This statement concerns NIC port errors and duplex mismatch, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair. For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. A targeted investigation checks: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics. The desired recovery condition is: Hardware reports no recurring ECC faults and memory validation passes under representative load.

D:

This statement concerns Unauthorized outbound traffic and exfiltration detection, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair. For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. A targeted investigation checks: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics. The desired recovery condition is: Hardware reports no recurring ECC faults and memory validation passes under representative load.

Question 623

Before a server change is approved, the on-call engineer receives this incident report: A server shows increasing corrected ECC errors concentrated in one memory channel, but applications have not yet crashed. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics.
  2. Ignore steadily rising ECC errors because the operating system still runs.
  3. Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters.
  4. Review PSU fault logs, UPS/PDU event history, load measurements and path diagrams.

Explanation

Correct Answer

A:

The expected technical relationship is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

Incorrect Answers

B:

This is the unsafe shortcut in the Correctable ECC error escalation scenario, not a justified remediation or diagnostic. Incident: A server shows increasing corrected ECC errors concentrated in one memory channel, but applications have not yet crashed.

C:

For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. This statement concerns NIC port errors and duplex mismatch, a different Server+ technical control.

D:

For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. A targeted investigation checks: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics.

Question 624

After the team implements a targeted remediation for Correctable ECC error escalation, the original incident was: A server shows increasing corrected ECC errors concentrated in one memory channel, but applications have not yet crashed. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. Unapproved outbound flows stop, legitimate data transfers remain and incident findings are documented.
  2. Hardware reports no recurring ECC faults and memory validation passes under representative load.
  3. Sustained stress tests run within component thermal limits without unexpected throttling or shutdown.
  4. The host boots the approved OS reliably through several cold boots with disk access intact.

Explanation

Correct Answer

B:

Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. Incident: A server shows increasing corrected ECC errors concentrated in one memory channel, but applications have not yet crashed.

Incorrect Answers

A:

This statement concerns Unauthorized outbound traffic and exfiltration detection, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair.

C:

This statement concerns Thermal shutdown and heatsink diagnostics, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair. For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. A targeted investigation checks: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics. The desired recovery condition is: Hardware reports no recurring ECC faults and memory validation passes under representative load.

D:

This statement concerns Boot loader and failed update recovery, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair. For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. A targeted investigation checks: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics. The desired recovery condition is: Hardware reports no recurring ECC faults and memory validation passes under representative load.

Question 625

A change board is planning a verified response to this server event: A server shows increasing corrected ECC errors concentrated in one memory channel, but applications have not yet crashed. For the Correctable ECC error escalation issue, which response elements belong in the approved plan? Select ONE best answer.

  1. Resolve physical media and negotiated speed/duplex compatibility, replacing defective optics or cabling as evidence dictates.
  2. Correlate ECC and memory training events with physical slots, then replace faulty qualified DIMMs using approved service steps. Then validate the change by confirming: Hardware reports no recurring ECC faults and memory validation passes under representative load.
  3. Ignore steadily rising ECC errors because the operating system still runs.
  4. Compare CPU ready, host memory reclaim, NUMA locality, datastore latency and workload peaks.

Explanation

Correct Answer

B:

This avoids the unsafe shortcut: Ignore steadily rising ECC errors because the operating system still runs.

Incorrect Answers

A:

This statement concerns NIC port errors and duplex mismatch, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair.

C:

This is the unsafe shortcut in the Correctable ECC error escalation scenario, not a justified remediation or diagnostic. Discriminate using: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics.

D:

That option would compare CPU ready, host memory reclaim, NUMA locality, datastore latency and workload peaks, but it addresses a different concern. Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

Question 626

A server administrator is investigating a server issue involving correctable ecc error escalation: A blade host produces intermittent kernel panics after a RAM upgrade and its hardware logs flag a specific DIMM slot. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.

  1. Inspect forward/return routing, gateway selection and stateful firewall rules; correct the narrow route or policy.
  2. Ignore steadily rising ECC errors because the operating system still runs.
  3. Correlate ECC and memory training events with physical slots, then replace faulty qualified DIMMs using approved service steps.
  4. Identify whether blocks, inodes, quotas or reserved space is exhausted; reclaim or expand only the constrained resource.

Explanation

Correct Answer

C:

Before rollout, confirm the problem with: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics. Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

Incorrect Answers

A:

That option would inspect forward/return routing, gateway selection and stateful firewall rules; correct the narrow route or policy, but it addresses a different concern. Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

B:

This is the unsafe shortcut in the Correctable ECC error escalation scenario, not a justified remediation or diagnostic. Incident: A blade host produces intermittent kernel panics after a RAM upgrade and its hardware logs flag a specific DIMM slot.

D:

That option would identify whether blocks, inodes, quotas or reserved space is exhausted; reclaim or expand only the constrained resource, but it addresses a different concern. Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

Question 627

While reviewing the CompTIA Server+ administration incident, a technician learns: A blade host produces intermittent kernel panics after a RAM upgrade and its hardware logs flag a specific DIMM slot. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. Filesystem write failures can arise from inode or quota limits as well as free-block exhaustion.
  2. Write-back caching requires reliable protected power or flash persistence; disabling cache can raise latency for safety.
  3. Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.
  4. Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

Explanation

Correct Answer

D:

Applying it leads to this operational action: Correlate ECC and memory training events with physical slots, then replace faulty qualified DIMMs using approved service steps. This is the controlling principle for the reported Correctable ECC error escalation incident.

Incorrect Answers

A:

This statement concerns Filesystem full, inode exhaustion and quotas, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair. For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. A targeted investigation checks: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics. The desired recovery condition is: Hardware reports no recurring ECC faults and memory validation passes under representative load.

B:

This statement concerns Write cache battery and storage performance, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair. For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. A targeted investigation checks: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics. The desired recovery condition is: Hardware reports no recurring ECC faults and memory validation passes under representative load.

C:

This statement concerns Routing and stateful firewall asymmetry, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair. For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. A targeted investigation checks: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics. The desired recovery condition is: Hardware reports no recurring ECC faults and memory validation passes under representative load.

Question 628

Before a server change is approved, the on-call engineer receives this incident report: A blade host produces intermittent kernel panics after a RAM upgrade and its hardware logs flag a specific DIMM slot. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Examine controller cache mode, BBU/flash status, workload write latency and vendor alerts.
  2. Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics.
  3. Review PSU fault logs, UPS/PDU event history, load measurements and path diagrams.
  4. Ignore steadily rising ECC errors because the operating system still runs.

Explanation

Correct Answer

B:

The expected technical relationship is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. These observations investigate the exact Correctable ECC error escalation failure rather than unrelated components.

Incorrect Answers

A:

For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. This statement concerns Write cache battery and storage performance, a different Server+ technical control.

C:

For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. This statement concerns PSU and power event isolation, a different Server+ technical control.

D:

Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

Question 629

After the team implements a targeted remediation for Correctable ECC error escalation, the original incident was: A blade host produces intermittent kernel panics after a RAM upgrade and its hardware logs flag a specific DIMM slot. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. The affected application can write while block, inode and quota headroom meet policy.
  2. Transfer throughput and latency recover while physical error counters remain stable.
  3. Hardware reports no recurring ECC faults and memory validation passes under representative load.
  4. Service is restored within response targets, temporary risk is removed and a reproducible fix is documented.

Explanation

Correct Answer

C:

Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. Incident: A blade host produces intermittent kernel panics after a RAM upgrade and its hardware logs flag a specific DIMM slot.

Incorrect Answers

A:

This statement concerns Filesystem full, inode exhaustion and quotas, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair.

B:

This statement concerns NIC port errors and duplex mismatch, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair. For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. A targeted investigation checks: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics. The desired recovery condition is: Hardware reports no recurring ECC faults and memory validation passes under representative load.

D:

This statement concerns Escalation, rollback and post-incident closure, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair. For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures. A targeted investigation checks: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics. The desired recovery condition is: Hardware reports no recurring ECC faults and memory validation passes under representative load.

Question 630

A change board is planning a verified response to this server event: A blade host produces intermittent kernel panics after a RAM upgrade and its hardware logs flag a specific DIMM slot. For the Correctable ECC error escalation issue, which response elements belong in the approved plan? Select TWO answers.

  1. Transfer throughput and latency recover while physical error counters remain stable.
  2. Correlate ECC and memory training events with physical slots, then replace faulty qualified DIMMs using approved service steps.
  3. Ignore steadily rising ECC errors because the operating system still runs.
  4. Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics.
  5. Inspect cache-protection health and replace or restore supported battery/flash protection before using safe cache policy.

Explanation

Correct Answer

B:

Before rollout, confirm the problem with: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics.

D:

The expected technical relationship is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

Incorrect Answers

A:

This statement concerns NIC port errors and duplex mismatch, a different Server+ technical control. It does not directly address the reported Correctable ECC error escalation fault or prove its repair. For this incident, the relevant principle is: Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

C:

Discriminate using: Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics.

E:

That option would inspect cache-protection health and replace or restore supported battery/flash protection before using safe cache policy, but it addresses a different concern. Correctable memory errors are early-warning evidence; a rising count can precede uncorrectable failures.

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