CompTIA SK0-005 Practice Test 3
Question 20
A change board is planning a verified response to this server event: A remote data room powers both redundant PSUs through different outlets of one UPS, so a single UPS fault shuts the server off. For the Dual power supply fault domains issue, which response elements belong in the approved plan? Select TWO answers.
- Only authorized administrators can reach and authenticate to the updated BMC over the isolated path.
- Trace PSU cords through PDU, UPS and breaker paths; compare load and failover ratings against peak demand.
- Treat two power cords sharing one upstream device as independent electrical redundancy.
- Connect redundant PSUs to independently protected PDU and UPS paths where available; size each path to carry the required load.
- Use lifecycle and alert data to schedule preventive maintenance, stock qualified critical spares and document replacement runbooks.
Explanation
Correct Answer
B:These observations investigate the exact Dual power supply fault domains failure rather than unrelated components. Use findings to decide whether to: Connect redundant PSUs to independently protected PDU and UPS paths where available; size each path to carry the required load.
D:A successful outcome is: A planned single-path outage leaves the server powered without overloading the remaining path.
Incorrect Answers
A:For this incident, the relevant principle is: Two PSUs are not a redundant power design when both depend on one upstream power device or circuit. This statement concerns Out-of-band management network, a different Server+ technical control.
C:Instead, the supported correction is: Connect redundant PSUs to independently protected PDU and UPS paths where available; size each path to carry the required load.
E:For this incident, the relevant principle is: Two PSUs are not a redundant power design when both depend on one upstream power device or circuit. The desired recovery condition is: A planned single-path outage leaves the server powered without overloading the remaining path.
Question 21
A server administrator is investigating a server issue involving cpu memory compatibility and population: A server expansion adds DIMMs of a different speed and rank to unapproved slots, and the BIOS downclocks memory while one channel remains empty. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.
- Place BMC access on an isolated management network, change default credentials, restrict administrator access and maintain supported firmware.
- Install any same-shape DIMMs in convenient slots and ignore processor-attached channel guidance.
- Follow the motherboard and processor-qualified DIMM population map and validate supported capacity, speed, ranks and NUMA channel balance.
- Match the NIC, switch port, transceiver, cable medium and speed/duplex capability to the supported link standard.
Explanation
Correct Answer
C:Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
Incorrect Answers
A:This statement concerns Out-of-band management network, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair. For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. A targeted investigation checks: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution. The desired recovery condition is: Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
B:This is the unsafe shortcut in the CPU memory compatibility and population scenario, not a justified remediation or diagnostic. Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
D:That option would match the NIC, switch port, transceiver, cable medium and speed/duplex capability to the supported link standard, but it addresses a different concern. Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
Question 22
While reviewing the CompTIA Server+ administration incident, a technician learns: A server expansion adds DIMMs of a different speed and rank to unapproved slots, and the BIOS downclocks memory while one channel remains empty. Which principle most directly explains how to address the described issue safely? Select ONE best answer.
- Rack placement must satisfy structural loading, chassis mounting specifications and designed airflow; a physically fitting rail is not proof of safe installation.
- Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
- Preventive maintenance reduces recoverable downtime by detecting degrading components and planning compatible replacements.
- Two PSUs are not a redundant power design when both depend on one upstream power device or circuit.
Explanation
Correct Answer
B:Collect evidence first: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution.
Incorrect Answers
A:This statement concerns Rack weight, rail compatibility and airflow, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair. For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. A targeted investigation checks: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution. The desired recovery condition is: Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
C:This statement concerns Preventive hardware maintenance and spares, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair. For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. A targeted investigation checks: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution. The desired recovery condition is: Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
D:This statement concerns Dual power supply fault domains, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair. For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. A targeted investigation checks: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution. The desired recovery condition is: Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
Question 23
Before a server change is approved, the on-call engineer receives this incident report: A server expansion adds DIMMs of a different speed and rank to unapproved slots, and the BIOS downclocks memory while one channel remains empty. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.
- Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution.
- Trace PSU cords through PDU, UPS and breaker paths; compare load and failover ratings against peak demand.
- Check NIC and switch support lists, module part IDs, cable labels, optical power, port errors and negotiated speed.
- Install any same-shape DIMMs in convenient slots and ignore processor-attached channel guidance.
Explanation
Correct Answer
A:These observations investigate the exact CPU memory compatibility and population failure rather than unrelated components. Incident: A server expansion adds DIMMs of a different speed and rank to unapproved slots, and the BIOS downclocks memory while one channel remains empty.
Incorrect Answers
B:For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. A targeted investigation checks: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution.
C:For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
D:This is the unsafe shortcut in the CPU memory compatibility and population scenario, not a justified remediation or diagnostic. Discriminate using: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution.
Question 24
After the team implements a targeted remediation for CPU memory compatibility and population, the original incident was: A server expansion adds DIMMs of a different speed and rank to unapproved slots, and the BIOS downclocks memory while one channel remains empty. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.
- The host sees the intended LUN with active or standby paths on both fabrics and survives a single-fabric maintenance test.
- The chassis is secured on compatible rails below rack capacity and sustained inlet and exhaust temperatures meet vendor limits.
- Only authorized administrators can reach and authenticate to the updated BMC over the isolated path.
- Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
Explanation
Correct Answer
D:Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
Incorrect Answers
A:This statement concerns Fibre Channel SAN zoning and multipath, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair. For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. A targeted investigation checks: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution. The desired recovery condition is: Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
B:This statement concerns Rack weight, rail compatibility and airflow, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair.
C:This statement concerns Out-of-band management network, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair.
Question 25
A change board is planning a verified response to this server event: A server expansion adds DIMMs of a different speed and rank to unapproved slots, and the BIOS downclocks memory while one channel remains empty. For the CPU memory compatibility and population issue, which response elements belong in the approved plan? Select ONE best answer.
- Compare hypervisor or array size, guest device size, partition/LVM layout, filesystem type and mounted free-space readings.
- Connect redundant PSUs to independently protected PDU and UPS paths where available; size each path to carry the required load.
- Follow the motherboard and processor-qualified DIMM population map and validate supported capacity, speed, ranks and NUMA channel balance. Then validate the change by confirming: Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
- Install any same-shape DIMMs in convenient slots and ignore processor-attached channel guidance.
Explanation
Correct Answer
C:Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. Before modifying systems, gather: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution.
Incorrect Answers
A:That option would compare hypervisor or array size, guest device size, partition/LVM layout, filesystem type and mounted free-space readings, but it addresses a different concern. Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
B:This statement concerns Dual power supply fault domains, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair.
D:This is the unsafe shortcut in the CPU memory compatibility and population scenario, not a justified remediation or diagnostic. Incident: A server expansion adds DIMMs of a different speed and rank to unapproved slots, and the BIOS downclocks memory while one channel remains empty.
Question 26
A server administrator is investigating a server issue involving cpu memory compatibility and population: An application host gains a second CPU but its memory remains populated only on the first processor's channels, causing poor NUMA locality. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.
- Choose a RAID level that meets measured capacity, write profile and disk-failure tolerance requirements, and retain independent backups.
- Follow the motherboard and processor-qualified DIMM population map and validate supported capacity, speed, ranks and NUMA channel balance.
- Use dedicated or appropriately isolated iSCSI paths with supported MPIO, correct initiator/target configuration and measured QoS.
- Install any same-shape DIMMs in convenient slots and ignore processor-attached channel guidance.
Explanation
Correct Answer
B:Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
Incorrect Answers
A:That option would choose a RAID level that meets measured capacity, write profile and disk-failure tolerance requirements, and retain independent backups, but it addresses a different concern. Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
C:That option would use dedicated or appropriately isolated iSCSI paths with supported MPIO, correct initiator/target configuration and measured QoS, but it addresses a different concern. Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
D:This is the unsafe shortcut in the CPU memory compatibility and population scenario, not a justified remediation or diagnostic. Incident: An application host gains a second CPU but its memory remains populated only on the first processor's channels, causing poor NUMA locality.
Question 27
While reviewing the CompTIA Server+ administration incident, a technician learns: An application host gains a second CPU but its memory remains populated only on the first processor's channels, causing poor NUMA locality. Which principle most directly explains how to address the described issue safely? Select ONE best answer.
- RAID 0 offers no disk fault tolerance; parity and mirrors have different write and rebuild characteristics, and none replaces backup.
- BIOS, BMC, controller firmware and drivers can have version dependencies; simultaneous fleet updates amplify risk.
- Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
- Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
Explanation
Correct Answer
D:Collect evidence first: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution.
Incorrect Answers
A:This statement concerns RAID fault tolerance versus performance, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair. For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. A targeted investigation checks: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution. The desired recovery condition is: Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
B:This statement concerns Firmware compatibility and staged maintenance, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair. For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. A targeted investigation checks: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution. The desired recovery condition is: Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
C:This statement concerns iSCSI network isolation and MPIO, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair. For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. A targeted investigation checks: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution. The desired recovery condition is: Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
Question 28
Before a server change is approved, the on-call engineer receives this incident report: An application host gains a second CPU but its memory remains populated only on the first processor's channels, causing poor NUMA locality. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.
- Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution.
- Check NIC and switch support lists, module part IDs, cable labels, optical power, port errors and negotiated speed.
- Install any same-shape DIMMs in convenient slots and ignore processor-attached channel guidance.
- Record installed firmware/driver versions, vendor advisories, compatibility notes and maintenance dependency order.
Explanation
Correct Answer
A:These observations investigate the exact CPU memory compatibility and population failure rather than unrelated components. Incident: An application host gains a second CPU but its memory remains populated only on the first processor's channels, causing poor NUMA locality.
Incorrect Answers
B:For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
C:Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
D:For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. This statement concerns Firmware compatibility and staged maintenance, a different Server+ technical control.
Question 29
After the team implements a targeted remediation for CPU memory compatibility and population, the original incident was: An application host gains a second CPU but its memory remains populated only on the first processor's channels, causing poor NUMA locality. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.
- Both planned storage paths are available and storage latency remains within limits during controlled network failover.
- Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
- The chassis is secured on compatible rails below rack capacity and sustained inlet and exhaust temperatures meet vendor limits.
- Only authorized administrators can reach and authenticate to the updated BMC over the isolated path.
Explanation
Correct Answer
B:Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
Incorrect Answers
A:This statement concerns iSCSI network isolation and MPIO, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair.
C:This statement concerns Rack weight, rail compatibility and airflow, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair. For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. A targeted investigation checks: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution. The desired recovery condition is: Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
D:This statement concerns Out-of-band management network, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair. For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. A targeted investigation checks: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution. The desired recovery condition is: Firmware reports the expected usable capacity and approved speed, with balanced populated channels and no training errors.
Question 30
A change board is planning a verified response to this server event: An application host gains a second CPU but its memory remains populated only on the first processor's channels, causing poor NUMA locality. For the CPU memory compatibility and population issue, which response elements belong in the approved plan? Select TWO answers.
- Validate the hardware compatibility matrix, test firmware and drivers in a pilot, arrange rollback and stagger production maintenance.
- Install any same-shape DIMMs in convenient slots and ignore processor-attached channel guidance.
- The chassis is secured on compatible rails below rack capacity and sustained inlet and exhaust temperatures meet vendor limits.
- Follow the motherboard and processor-qualified DIMM population map and validate supported capacity, speed, ranks and NUMA channel balance.
- Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution.
Explanation
Correct Answer
D:Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes. Before rollout, confirm the problem with: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution.
E:These observations investigate the exact CPU memory compatibility and population failure rather than unrelated components. The expected technical relationship is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
Incorrect Answers
A:That option would validate the hardware compatibility matrix, test firmware and drivers in a pilot, arrange rollback and stagger production maintenance, but it addresses a different concern. Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
B:Discriminate using: Inspect qualified hardware lists, slot/channel maps, POST logs, detected speeds and NUMA memory distribution.
C:This statement concerns Rack weight, rail compatibility and airflow, a different Server+ technical control. It does not directly address the reported CPU memory compatibility and population fault or prove its repair. For this incident, the relevant principle is: Memory configuration depends on CPU/socket population and validated channel topology, not only DIMM physical fit or total gigabytes.
