CompTIA SK0-005 Practice Test 9
Question 80
A change board is planning a verified response to this server event: A database host can discover a LUN over fabric A but loses storage access whenever one HBA switch is maintained because fabric B has no mapped path. For the Fibre Channel SAN zoning and multipath issue, which response elements belong in the approved plan? Select TWO answers.
- Check HBA WWPNs, zone membership, array masking, fabric logins and host multipath path states.
- Devices remain within endurance, temperature and spare-capacity guidance and replacements occur before service-impacting failures.
- Configure consistent WWPN zoning and LUN masking on independent fabrics, then enable supported host multipath policies.
- Use dedicated or appropriately isolated iSCSI paths with supported MPIO, correct initiator/target configuration and measured QoS.
- Expose every LUN to every host and assume extra FC cables automatically create safe paths.
Explanation
Correct Answer
A:These observations investigate the exact Fibre Channel SAN zoning and multipath failure rather than unrelated components. The expected technical relationship is: SAN high availability requires correctly presented LUNs over multiple independent usable fabric paths, not redundant cables alone.
C:SAN high availability requires correctly presented LUNs over multiple independent usable fabric paths, not redundant cables alone. This is the appropriate targeted correction for Fibre Channel SAN zoning and multipath.
Incorrect Answers
B:For this incident, the relevant principle is: SAN high availability requires correctly presented LUNs over multiple independent usable fabric paths, not redundant cables alone. This statement concerns NVMe endurance and capacity monitoring, a different Server+ technical control.
D:For this incident, the relevant principle is: SAN high availability requires correctly presented LUNs over multiple independent usable fabric paths, not redundant cables alone. It does not directly address the reported Fibre Channel SAN zoning and multipath fault or prove its repair.
E:SAN high availability requires correctly presented LUNs over multiple independent usable fabric paths, not redundant cables alone. Discriminate using: Check HBA WWPNs, zone membership, array masking, fabric logins and host multipath path states.
Question 81
A server administrator is investigating a server issue involving iscsi network isolation and mpio: A virtualization cluster transports iSCSI and bulk user downloads over one congested VLAN and experiences unpredictable storage latency. 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.
- Use dedicated or appropriately isolated iSCSI paths with supported MPIO, correct initiator/target configuration and measured QoS.
- Configure consistent WWPN zoning and LUN masking on independent fabrics, then enable supported host multipath policies.
- Put additional NICs in the server without confirming usable target sessions or isolation from congested traffic.
Explanation
Correct Answer
B:Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A successful outcome is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
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. Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
C:That option would configure consistent WWPN zoning and LUN masking on independent fabrics, then enable supported host multipath policies, but it addresses a different concern. Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
D:This is the unsafe shortcut in the iSCSI network isolation and MPIO scenario, not a justified remediation or diagnostic. Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
Question 82
While reviewing the CompTIA Server+ administration incident, a technician learns: A virtualization cluster transports iSCSI and bulk user downloads over one congested VLAN and experiences unpredictable storage latency. Which principle most directly explains how to address the described issue safely? Select ONE best answer.
- Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
- Flash storage performance and life depend on workload write intensity, remaining spare blocks and device health telemetry.
- An array may remain vulnerable while degraded or rebuilding; a spare is useful only if the controller can use it.
- Block-device capacity, partition or logical-volume capacity and filesystem capacity are separate layers that must be reconciled.
Explanation
Correct Answer
A:The acceptance test is: Both planned storage paths are available and storage latency remains within limits during controlled network failover. This is the controlling principle for the reported iSCSI network isolation and MPIO incident.
Incorrect Answers
B:This statement concerns NVMe endurance and capacity monitoring, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair. For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A targeted investigation checks: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status. The desired recovery condition is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
C:This statement concerns Hot spare eligibility and rebuild supervision, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair. For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A targeted investigation checks: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status. The desired recovery condition is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
D:This statement concerns Filesystem growth after LUN expansion, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair. For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A targeted investigation checks: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status. The desired recovery condition is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
Question 83
Before a server change is approved, the on-call engineer receives this incident report: A virtualization cluster transports iSCSI and bulk user downloads over one congested VLAN and experiences unpredictable storage latency. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.
- Put additional NICs in the server without confirming usable target sessions or isolation from congested traffic.
- Check HBA WWPNs, zone membership, array masking, fabric logins and host multipath path states.
- Review daily written bytes, manufacturer endurance ratings, NVMe critical warnings, percent-used and latency statistics.
- Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status.
Explanation
Correct Answer
D:These observations investigate the exact iSCSI network isolation and MPIO failure rather than unrelated components. The expected technical relationship is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
Incorrect Answers
A:This is the unsafe shortcut in the iSCSI network isolation and MPIO scenario, not a justified remediation or diagnostic. Discriminate using: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status.
B:For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A targeted investigation checks: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status.
C:For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. This statement concerns NVMe endurance and capacity monitoring, a different Server+ technical control.
Question 84
After the team implements a targeted remediation for iSCSI network isolation and MPIO, the original incident was: A virtualization cluster transports iSCSI and bulk user downloads over one congested VLAN and experiences unpredictable storage latency. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.
- The selected array meets latency and capacity targets and remains accessible during the specified supported drive failure.
- Both planned storage paths are available and storage latency remains within limits during controlled network failover.
- The correct mounted filesystem reflects the new usable capacity without data loss and application writes succeed.
- Critical spare parts and tested replacement procedures are available, with sensor warnings resolved before failure.
Explanation
Correct Answer
B:Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
Incorrect Answers
A:This statement concerns RAID fault tolerance versus performance, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair. For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A targeted investigation checks: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status. The desired recovery condition is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
C:This statement concerns Filesystem growth after LUN expansion, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair.
D:This statement concerns Preventive hardware maintenance and spares, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair. For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A targeted investigation checks: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status. The desired recovery condition is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
Question 85
A change board is planning a verified response to this server event: A virtualization cluster transports iSCSI and bulk user downloads over one congested VLAN and experiences unpredictable storage latency. For the iSCSI network isolation and MPIO issue, which response elements belong in the approved plan? Select ONE best answer.
- Use dedicated or appropriately isolated iSCSI paths with supported MPIO, correct initiator/target configuration and measured QoS. Then validate the change by confirming: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
- Put additional NICs in the server without confirming usable target sessions or isolation from congested traffic.
- Trace PSU cords through PDU, UPS and breaker paths; compare load and failover ratings against peak demand.
- Select enterprise SSD endurance for the expected write volume and monitor NVMe health, utilization and replacement thresholds.
Explanation
Correct Answer
A:Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. This avoids the unsafe shortcut: Put additional NICs in the server without confirming usable target sessions or isolation from congested traffic.
Incorrect Answers
B:This is the unsafe shortcut in the iSCSI network isolation and MPIO scenario, not a justified remediation or diagnostic. Incident: A virtualization cluster transports iSCSI and bulk user downloads over one congested VLAN and experiences unpredictable storage latency.
C:That option would trace PSU cords through PDU, UPS and breaker paths; compare load and failover ratings against peak demand, but it addresses a different concern. Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
D:That option would select enterprise SSD endurance for the expected write volume and monitor NVMe health, utilization and replacement thresholds, but it addresses a different concern. Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
Question 86
A server administrator is investigating a server issue involving iscsi network isolation and mpio: A server has two storage NICs, but iSCSI sessions all traverse one switch and the second interface is never used for multipath. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.
- Use dedicated or appropriately isolated iSCSI paths with supported MPIO, correct initiator/target configuration and measured QoS.
- Match the NIC, switch port, transceiver, cable medium and speed/duplex capability to the supported link standard.
- Put additional NICs in the server without confirming usable target sessions or isolation from congested traffic.
- Place BMC access on an isolated management network, change default credentials, restrict administrator access and maintain supported firmware.
Explanation
Correct Answer
A:Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
Incorrect Answers
B: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. Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
C:This is the unsafe shortcut in the iSCSI network isolation and MPIO scenario, not a justified remediation or diagnostic. Incident: A server has two storage NICs, but iSCSI sessions all traverse one switch and the second interface is never used for multipath.
D:This statement concerns Out-of-band management network, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair. For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A targeted investigation checks: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status. The desired recovery condition is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
Question 87
While reviewing the CompTIA Server+ administration incident, a technician learns: A server has two storage NICs, but iSCSI sessions all traverse one switch and the second interface is never used for multipath. Which principle most directly explains how to address the described issue safely? Select ONE best answer.
- Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
- Block-device capacity, partition or logical-volume capacity and filesystem capacity are separate layers that must be reconciled.
- Physical Ethernet links require interoperable media and interfaces; configuring an IP address cannot fix incompatible layer-one optics.
- Out-of-band controllers are privileged hardware management interfaces and need independent network and identity protections.
Explanation
Correct Answer
A:The acceptance test is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
Incorrect Answers
B:This statement concerns Filesystem growth after LUN expansion, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair. For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A targeted investigation checks: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status. The desired recovery condition is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
C:This statement concerns NIC media and transceiver compatibility, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair. For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A targeted investigation checks: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status. The desired recovery condition is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
D:This statement concerns Out-of-band management network, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair.
Question 88
Before a server change is approved, the on-call engineer receives this incident report: A server has two storage NICs, but iSCSI sessions all traverse one switch and the second interface is never used for multipath. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.
- Examine controller event logs, physical drive size/type, spare assignment, rebuild progress and media-error counters.
- Put additional NICs in the server without confirming usable target sessions or isolation from congested traffic.
- Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status.
- Compare hypervisor or array size, guest device size, partition/LVM layout, filesystem type and mounted free-space readings.
Explanation
Correct Answer
C:These observations investigate the exact iSCSI network isolation and MPIO failure rather than unrelated components. Incident: A server has two storage NICs, but iSCSI sessions all traverse one switch and the second interface is never used for multipath.
Incorrect Answers
A:For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
B:Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
D:For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. This statement concerns Filesystem growth after LUN expansion, a different Server+ technical control.
Question 89
After the team implements a targeted remediation for iSCSI network isolation and MPIO, the original incident was: A server has two storage NICs, but iSCSI sessions all traverse one switch and the second interface is never used for multipath. 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.
- Both planned storage paths are available and storage latency remains within limits during controlled network failover.
- The selected array meets latency and capacity targets and remains accessible during the specified supported drive failure.
- The port establishes the planned supported link speed with stable counters and no rising physical errors.
Explanation
Correct Answer
B:Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs.
Incorrect Answers
A:This statement concerns Fibre Channel SAN zoning and multipath, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair. For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A targeted investigation checks: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status. The desired recovery condition is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
C:This statement concerns RAID fault tolerance versus performance, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair. For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. A targeted investigation checks: Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status. The desired recovery condition is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
D:This statement concerns NIC media and transceiver compatibility, a different Server+ technical control. It does not directly address the reported iSCSI network isolation and MPIO fault or prove its repair.
Question 90
A change board is planning a verified response to this server event: A server has two storage NICs, but iSCSI sessions all traverse one switch and the second interface is never used for multipath. For the iSCSI network isolation and MPIO issue, which response elements belong in the approved plan? Select TWO answers.
- Inspect initiator sessions, target portals, VLAN paths, MTU agreement, switch queue drops and MPIO status.
- Put additional NICs in the server without confirming usable target sessions or isolation from congested traffic.
- The selected array meets latency and capacity targets and remains accessible during the specified supported drive failure.
- Use dedicated or appropriately isolated iSCSI paths with supported MPIO, correct initiator/target configuration and measured QoS.
- Rescan the device, extend the correct partition or volume manager layer and grow the supported filesystem using a backed-up change plan.
Explanation
Correct Answer
A:These observations investigate the exact iSCSI network isolation and MPIO failure rather than unrelated components. Confirm remediation through: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
D:Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. This is the appropriate targeted correction for iSCSI network isolation and MPIO.
Incorrect Answers
B:Incident: A server has two storage NICs, but iSCSI sessions all traverse one switch and the second interface is never used for multipath.
C:For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. This statement concerns RAID fault tolerance versus performance, a different Server+ technical control.
E:For this incident, the relevant principle is: Stable iSCSI performance and resilience depend on end-to-end network path design and host multipathing, not simply the number of NICs. The desired recovery condition is: Both planned storage paths are available and storage latency remains within limits during controlled network failover.
