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CompTIA SK0-005 Practice Test 64

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.

Question 631

A server administrator is investigating a server issue involving nic port errors and duplex mismatch: A file server transfers data slowly over a copper link with rising CRC and alignment errors after a patch-cable change. 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. Resolve physical media and negotiated speed/duplex compatibility, replacing defective optics or cabling as evidence dictates.
  4. Increase TCP timeout values while leaving rising frame and cable errors unresolved.

Explanation

Correct Answer

C:

Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. This is the appropriate targeted correction for NIC port errors and duplex mismatch.

Incorrect Answers

A:

This statement concerns Correctable ECC error escalation, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

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. Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults.

D:

This is the unsafe shortcut in the NIC port errors and duplex mismatch scenario, not a justified remediation or diagnostic. Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults.

Question 632

While reviewing the CompTIA Server+ administration incident, a technician learns: A file server transfers data slowly over a copper link with rising CRC and alignment errors after a patch-cable change. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults.
  2. Degraded or unstable storage may be one additional fault from data loss; immediate integrity and rebuild priorities matter.
  3. Power redundancy requires end-to-end capacity and isolation, not merely green status indicators on redundant modules.
  4. Multipath configuration must be tested across real fabric failures and correct asymmetric access states.

Explanation

Correct Answer

A:

This is the controlling principle for the reported NIC port errors and duplex mismatch incident. The acceptance test is: Transfer throughput and latency recover while physical error counters remain stable.

Incorrect Answers

B:

This statement concerns RAID degraded state and predictive drive failure, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

C:

This statement concerns PSU and power event isolation, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

D:

This statement concerns SAN fabric multipath failover and latency, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

Question 633

Before a server change is approved, the on-call engineer receives this incident report: A file server transfers data slowly over a copper link with rising CRC and alignment errors after a patch-cable change. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Review PSU fault logs, UPS/PDU event history, load measurements and path diagrams.
  2. Increase TCP timeout values while leaving rising frame and cable errors unresolved.
  3. Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics.
  4. Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters.

Explanation

Correct Answer

D:

These observations investigate the exact NIC port errors and duplex mismatch failure rather than unrelated components. The expected technical relationship is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults.

Incorrect Answers

A:

For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters.

B:

Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. This is the unsafe shortcut in the NIC port errors and duplex mismatch scenario, not a justified remediation or diagnostic.

C:

For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. This statement concerns Correctable ECC error escalation, a different Server+ technical control.

Question 634

After the team implements a targeted remediation for NIC port errors and duplex mismatch, the original incident was: A file server transfers data slowly over a copper link with rising CRC and alignment errors after a patch-cable change. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. The array returns to a healthy redundant state with error-free checks and a verified recovery copy.
  2. Sustained stress tests run within component thermal limits without unexpected throttling or shutdown.
  3. Transfer throughput and latency recover while physical error counters remain stable.
  4. The affected application can write while block, inode and quota headroom meet policy.

Explanation

Correct Answer

C:

Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. This evidence tests whether the original NIC port errors and duplex mismatch weakness has been corrected under realistic conditions.

Incorrect Answers

A:

This statement concerns RAID degraded state and predictive drive failure, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair.

B:

This statement concerns Thermal shutdown and heatsink diagnostics, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

D:

This statement concerns Filesystem full, inode exhaustion and quotas, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

Question 635

A change board is planning a verified response to this server event: A file server transfers data slowly over a copper link with rising CRC and alignment errors after a patch-cable change. For the NIC port errors and duplex mismatch 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. Then validate the change by confirming: Transfer throughput and latency recover while physical error counters remain stable.
  2. Trace and test PSU, cables, PDU, UPS and breaker paths under a safely controlled maintenance procedure.
  3. Increase TCP timeout values while leaving rising frame and cable errors unresolved.
  4. Inspect change records, kernel and driver logs, known advisories and control-host comparison tests.

Explanation

Correct Answer

A:

Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. The proposed change and outcome assessment work together for NIC port errors and duplex mismatch.

Incorrect Answers

B:

For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. This statement concerns PSU and power event isolation, a different Server+ technical control.

C:

Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. Discriminate using: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters.

D:

For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. This statement concerns OS patch regression and rollback, a different Server+ technical control.

Question 636

A server administrator is investigating a server issue involving nic port errors and duplex mismatch: A legacy switch and server disagree on duplex settings, producing collisions and severe retransmission during backup traffic. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.

  1. Isolate affected hosts, preserve evidence and investigate persistence and lateral movement before controlled remediation.
  2. Contain unapproved egress, preserve flow and endpoint evidence and validate allowed destinations before reopening paths.
  3. Resolve physical media and negotiated speed/duplex compatibility, replacing defective optics or cabling as evidence dictates.
  4. Increase TCP timeout values while leaving rising frame and cable errors unresolved.

Explanation

Correct Answer

C:

Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A successful outcome is: Transfer throughput and latency recover while physical error counters remain stable.

Incorrect Answers

A:

This statement concerns Malware persistence and containment, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

B:

This statement concerns Unauthorized outbound traffic and exfiltration detection, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

D:

This is the unsafe shortcut in the NIC port errors and duplex mismatch scenario, not a justified remediation or diagnostic. Discriminate using: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters.

Question 637

While reviewing the CompTIA Server+ administration incident, a technician learns: A legacy switch and server disagree on duplex settings, producing collisions and severe retransmission during backup traffic. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults.
  2. Tagged VLAN traffic must be permitted end-to-end; routing changes do not repair a missing layer-two VLAN path.
  3. Malware response must address propagation and initial access; rebooting one host does not remove the attacker's foothold.
  4. Unusual outbound volume and destinations may indicate exfiltration; investigation must preserve evidence and scope blast radius.

Explanation

Correct Answer

A:

This is the controlling principle for the reported NIC port errors and duplex mismatch incident. Applying it leads to this operational action: Resolve physical media and negotiated speed/duplex compatibility, replacing defective optics or cabling as evidence dictates.

Incorrect Answers

B:

This statement concerns Incorrect switch VLAN trunk allowance, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

C:

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

D:

This statement concerns Unauthorized outbound traffic and exfiltration detection, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair.

Question 638

Before a server change is approved, the on-call engineer receives this incident report: A legacy switch and server disagree on duplex settings, producing collisions and severe retransmission during backup traffic. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters.
  2. Examine SEL/IPMI ECC counters, DIMM slot map, BIOS updates and controlled memory diagnostics.
  3. Increase TCP timeout values while leaving rising frame and cable errors unresolved.
  4. Inspect switchport mode, native VLAN, allowed VLAN set, MAC learning and packet tags on the affected uplink.

Explanation

Correct Answer

A:

These observations investigate the exact NIC port errors and duplex mismatch failure rather than unrelated components. Confirm remediation through: Transfer throughput and latency recover while physical error counters remain stable.

Incorrect Answers

B:

For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

C:

Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. Incident: A legacy switch and server disagree on duplex settings, producing collisions and severe retransmission during backup traffic.

D:

For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. This statement concerns Incorrect switch VLAN trunk allowance, a different Server+ technical control.

Question 639

After the team implements a targeted remediation for NIC port errors and duplex mismatch, the original incident was: A legacy switch and server disagree on duplex settings, producing collisions and severe retransmission during backup traffic. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. The host survives the designed single-power-path failure without reset or overcurrent.
  2. Authenticated TLS succeeds from all expected clients without disabling validation.
  3. Transfer throughput and latency recover while physical error counters remain stable.
  4. Affected systems are contained, persistent mechanisms removed and monitored restoration shows no renewed indicators.

Explanation

Correct Answer

C:

Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. The remediation is: Resolve physical media and negotiated speed/duplex compatibility, replacing defective optics or cabling as evidence dictates.

Incorrect Answers

A:

This statement concerns PSU and power event isolation, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

B:

This statement concerns Expired certificate and trust failure triage, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. A targeted investigation checks: Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters. The desired recovery condition is: Transfer throughput and latency recover while physical error counters remain stable.

D:

This statement concerns Malware persistence and containment, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair. For this incident, the relevant principle is: Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults.

Question 640

A change board is planning a verified response to this server event: A legacy switch and server disagree on duplex settings, producing collisions and severe retransmission during backup traffic. For the NIC port errors and duplex mismatch issue, which response elements belong in the approved plan? Select TWO answers.

  1. Correct access/trunk VLAN membership and allowed VLAN lists while preserving intended segmentation.
  2. Increase TCP timeout values while leaving rising frame and cable errors unresolved.
  3. Resolve physical media and negotiated speed/duplex compatibility, replacing defective optics or cabling as evidence dictates.
  4. Inspect interface counters at both ends, cable tests, transceiver diagnostics and negotiated parameters.
  5. The host survives the designed single-power-path failure without reset or overcurrent.

Explanation

Correct Answer

C:

Link-up alone does not establish link quality; CRC, FCS, drops and duplex mismatches reveal layer-one or layer-two faults. For this case, A legacy switch and server disagree on duplex settings, producing collisions and severe retransmission during backup traffic.

D:

These observations investigate the exact NIC port errors and duplex mismatch failure rather than unrelated components. Incident: A legacy switch and server disagree on duplex settings, producing collisions and severe retransmission during backup traffic.

Incorrect Answers

A:

This statement concerns Incorrect switch VLAN trunk allowance, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair.

B:

This is the unsafe shortcut in the NIC port errors and duplex mismatch scenario, not a justified remediation or diagnostic. Incident: A legacy switch and server disagree on duplex settings, producing collisions and severe retransmission during backup traffic.

E:

This statement concerns PSU and power event isolation, a different Server+ technical control. It does not directly address the reported NIC port errors and duplex mismatch fault or prove its repair.

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