HP HPE7-A01 Practice Test 73
Question 720
A site upgrade triggers both bad-credential errors and transport timeouts, and support treats them as one generic RF problem. If the revised setting disrupts users, which controlled rollback would be most relevant?
- Reinstate the last stable channel and power plan if the adjustment introduces a new coverage gap.
- Reinstate the previous valid server path and authentication profile rather than globally bypassing admission control.
- Return to a tested optic and cable path and roll back the unsupported interface changes if errors persist.
- Reinstate the last known-good route and narrow filter rule if the changed policy expands access or causes new blackholes.
Explanation
Correct Answer
B:Reinstate the previous valid server path and authentication profile rather than globally bypassing admission control. Access-Reject means the server evaluated and denied the request; a timeout indicates missing response and calls for different isolation. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described radius reject versus timeout situation.
Incorrect Answers
A:Reinstate the last stable channel and power plan if the adjustment introduces a new coverage gap. This instead concerns rf interference versus weak coverage. Strong received signal does not rule out airtime interference or contention; troubleshooting must measure RF quality as well as power. It would not safely roll back the relevant failed change. The immediate problem concerns radius reject versus timeout.
C:Return to a tested optic and cable path and roll back the unsupported interface changes if errors persist. This instead concerns physical link crc and optical errors. Physical-layer faults can corrupt frames without taking the interface administratively down; clean routing adjacency does not rule them out. It would not safely roll back the relevant failed change. The immediate problem concerns radius reject versus timeout. For the incident in this item: A site upgrade triggers both bad-credential errors and transport timeouts, and support treats them as one generic RF problem.
D:Reinstate the last known-good route and narrow filter rule if the changed policy expands access or causes new blackholes. This instead concerns traceroute path and acl filtering. Traceroute helps localize a path but hop response filtering can be misleading; successful application flows and policy counters confirm forwarding. It would not safely roll back the relevant failed change. The immediate problem concerns radius reject versus timeout.
Question 721
A campus classroom reports strong RSSI but high retransmissions whenever neighboring equipment is active. Which investigation would best isolate the immediate network dependency?
- Inspect physical-layer error counters, transceiver diagnostics, negotiated speed and cable or optic compatibility.
- Inspect RF spectrum activity, channel utilization, retries and SNR at the affected client position.
- Inspect next-hop path, relevant routing entries, ACL hits and ICMP or trace response behavior at the suspected hop.
- Inspect client DHCP packets, SVI relay configuration and the server's scope or return path for the VLAN.
Explanation
Correct Answer
B:Inspect RF spectrum activity, channel utilization, retries and SNR at the affected client position. Strong received signal does not rule out airtime interference or contention; troubleshooting must measure RF quality as well as power. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described rf interference versus weak coverage situation.
Incorrect Answers
A:Inspect physical-layer error counters, transceiver diagnostics, negotiated speed and cable or optic compatibility. This instead concerns physical link crc and optical errors. Physical-layer faults can corrupt frames without taking the interface administratively down; clean routing adjacency does not rule them out. It does not isolate the cause of the stated incident. The immediate problem concerns rf interference versus weak coverage.
C:Inspect next-hop path, relevant routing entries, ACL hits and ICMP or trace response behavior at the suspected hop. This instead concerns traceroute path and acl filtering. Traceroute helps localize a path but hop response filtering can be misleading; successful application flows and policy counters confirm forwarding. It does not isolate the cause of the stated incident. The immediate problem concerns rf interference versus weak coverage.
D:Inspect client DHCP packets, SVI relay configuration and the server's scope or return path for the VLAN. This instead concerns dhcp discover without offer. Wi-Fi association and Ethernet link status do not prove DHCP success; the exchange depends on server access and subnet-correct relay. It does not isolate the cause of the stated incident. The immediate problem concerns rf interference versus weak coverage.
Question 722
A campus classroom reports strong RSSI but high retransmissions whenever neighboring equipment is active. Which specific corrective design step best meets the stated campus requirement?
- Change channel plan, AP placement or source interference handling based on measured conditions rather than only boosting power.
- Repair the damaged or mismatched cabling or transceiver and align supported link parameters at both ends.
- Correct the specific route or permitted ACL rule for the approved application flow without opening all traffic.
- Restore the correct relay, authorized DHCP scope and routing for the affected broadcast domain.
Explanation
Correct Answer
A:Change channel plan, AP placement or source interference handling based on measured conditions rather than only boosting power. Strong received signal does not rule out airtime interference or contention; troubleshooting must measure RF quality as well as power. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described rf interference versus weak coverage situation.
Incorrect Answers
B:Repair the damaged or mismatched cabling or transceiver and align supported link parameters at both ends. This instead concerns physical link crc and optical errors. Physical-layer faults can corrupt frames without taking the interface administratively down; clean routing adjacency does not rule them out. It would not implement the specifically required change. The immediate problem concerns rf interference versus weak coverage.
C:Correct the specific route or permitted ACL rule for the approved application flow without opening all traffic. This instead concerns traceroute path and acl filtering. Traceroute helps localize a path but hop response filtering can be misleading; successful application flows and policy counters confirm forwarding. It would not implement the specifically required change. The immediate problem concerns rf interference versus weak coverage.
D:Restore the correct relay, authorized DHCP scope and routing for the affected broadcast domain. This instead concerns dhcp discover without offer. Wi-Fi association and Ethernet link status do not prove DHCP success; the exchange depends on server access and subnet-correct relay. It would not implement the specifically required change. The immediate problem concerns rf interference versus weak coverage.
Question 723
A campus classroom reports strong RSSI but high retransmissions whenever neighboring equipment is active. Following a targeted change, which acceptance test would most directly demonstrate success?
- Verify new CRC and alignment error rates stop rising during representative traffic.
- Verify the application succeeds and path or policy counters show it follows the intended route while restricted probes remain denied.
- Verify a new client completes Discover-Offer-Request-Ack and receives the approved gateway options.
- Verify fewer retries and better representative throughput under equivalent RF load.
Explanation
Correct Answer
D:Verify fewer retries and better representative throughput under equivalent RF load. Strong received signal does not rule out airtime interference or contention; troubleshooting must measure RF quality as well as power. The result tests actual working behavior, not merely a saved configuration. The decision applies to the described rf interference versus weak coverage situation.
Incorrect Answers
A:Verify new CRC and alignment error rates stop rising during representative traffic. This instead concerns physical link crc and optical errors. Physical-layer faults can corrupt frames without taking the interface administratively down; clean routing adjacency does not rule them out. It would not establish that this function actually works. The immediate problem concerns rf interference versus weak coverage.
B:Verify the application succeeds and path or policy counters show it follows the intended route while restricted probes remain denied. This instead concerns traceroute path and acl filtering. Traceroute helps localize a path but hop response filtering can be misleading; successful application flows and policy counters confirm forwarding. It would not establish that this function actually works. The immediate problem concerns rf interference versus weak coverage.
C:Verify a new client completes Discover-Offer-Request-Ack and receives the approved gateway options. This instead concerns dhcp discover without offer. Wi-Fi association and Ethernet link status do not prove DHCP success; the exchange depends on server access and subnet-correct relay. It would not establish that this function actually works. The immediate problem concerns rf interference versus weak coverage.
Question 724
A campus classroom reports strong RSSI but high retransmissions whenever neighboring equipment is active. The change fails acceptance. What is the safest targeted restoration action?
- Return to a tested optic and cable path and roll back the unsupported interface changes if errors persist.
- Restore the last known-good route and narrow filter rule if the changed policy expands access or causes new blackholes.
- Restore the last stable channel and power plan if the adjustment introduces a new coverage gap.
- Reinstate the prior DHCP relay and client scope while isolating the route or server change.
Explanation
Correct Answer
C:Restore the last stable channel and power plan if the adjustment introduces a new coverage gap. Strong received signal does not rule out airtime interference or contention; troubleshooting must measure RF quality as well as power. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described rf interference versus weak coverage situation.
Incorrect Answers
A:Return to a tested optic and cable path and roll back the unsupported interface changes if errors persist. This instead concerns physical link crc and optical errors. Physical-layer faults can corrupt frames without taking the interface administratively down; clean routing adjacency does not rule them out. It would not safely roll back the relevant failed change. The immediate problem concerns rf interference versus weak coverage.
B:Restore the last known-good route and narrow filter rule if the changed policy expands access or causes new blackholes. This instead concerns traceroute path and acl filtering. Traceroute helps localize a path but hop response filtering can be misleading; successful application flows and policy counters confirm forwarding. It would not safely roll back the relevant failed change. The immediate problem concerns rf interference versus weak coverage.
D:Reinstate the prior DHCP relay and client scope while isolating the route or server change. This instead concerns dhcp discover without offer. Wi-Fi association and Ethernet link status do not prove DHCP success; the exchange depends on server access and subnet-correct relay. It would not safely roll back the relevant failed change. The immediate problem concerns rf interference versus weak coverage.
Question 725
A field engineer sees low client throughput during a busy event despite acceptable SNR and a healthy wired uplink. Before implementing a remedy, what should the engineer check first?
- Review physical-layer error counters, transceiver diagnostics, negotiated speed and cable or optic compatibility.
- Review RF spectrum activity, channel utilization, retries and SNR at the affected client position.
- Review next-hop path, relevant routing entries, ACL hits and ICMP or trace response behavior at the suspected hop.
- Review client DHCP packets, SVI relay configuration and the server's scope or return path for the VLAN.
Explanation
Correct Answer
B:Review RF spectrum activity, channel utilization, retries and SNR at the affected client position. Strong received signal does not rule out airtime interference or contention; troubleshooting must measure RF quality as well as power. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described rf interference versus weak coverage situation.
Incorrect Answers
A:Review physical-layer error counters, transceiver diagnostics, negotiated speed and cable or optic compatibility. This instead concerns physical link crc and optical errors. Physical-layer faults can corrupt frames without taking the interface administratively down; clean routing adjacency does not rule them out. It does not isolate the cause of the stated incident. The immediate problem concerns rf interference versus weak coverage.
C:Review next-hop path, relevant routing entries, ACL hits and ICMP or trace response behavior at the suspected hop. This instead concerns traceroute path and acl filtering. Traceroute helps localize a path but hop response filtering can be misleading; successful application flows and policy counters confirm forwarding. It does not isolate the cause of the stated incident. The immediate problem concerns rf interference versus weak coverage.
D:Review client DHCP packets, SVI relay configuration and the server's scope or return path for the VLAN. This instead concerns dhcp discover without offer. Wi-Fi association and Ethernet link status do not prove DHCP success; the exchange depends on server access and subnet-correct relay. It does not isolate the cause of the stated incident. The immediate problem concerns rf interference versus weak coverage.
Question 726
A field engineer sees low client throughput during a busy event despite acceptable SNR and a healthy wired uplink. After the root cause is confirmed, which narrowly scoped configuration action should be selected?
- Change channel plan, AP placement or source interference handling based on measured conditions rather than only boosting power for the affected campus deployment.
- Correct the damaged or mismatched cabling or transceiver and align supported link parameters at both ends.
- Repair the specific route or permitted ACL rule for the approved application flow without opening all traffic.
- Reinstate the correct relay, authorized DHCP scope and routing for the affected broadcast domain.
Explanation
Correct Answer
A:Change channel plan, AP placement or source interference handling based on measured conditions rather than only boosting power for the affected campus deployment. Strong received signal does not rule out airtime interference or contention; troubleshooting must measure RF quality as well as power. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described rf interference versus weak coverage situation.
Incorrect Answers
B:Correct the damaged or mismatched cabling or transceiver and align supported link parameters at both ends. This instead concerns physical link crc and optical errors. Physical-layer faults can corrupt frames without taking the interface administratively down; clean routing adjacency does not rule them out. It would not implement the specifically required change. The immediate problem concerns rf interference versus weak coverage.
C:Repair the specific route or permitted ACL rule for the approved application flow without opening all traffic. This instead concerns traceroute path and acl filtering. Traceroute helps localize a path but hop response filtering can be misleading; successful application flows and policy counters confirm forwarding. It would not implement the specifically required change. The immediate problem concerns rf interference versus weak coverage.
D:Reinstate the correct relay, authorized DHCP scope and routing for the affected broadcast domain. This instead concerns dhcp discover without offer. Wi-Fi association and Ethernet link status do not prove DHCP success; the exchange depends on server access and subnet-correct relay. It would not implement the specifically required change. The immediate problem concerns rf interference versus weak coverage.
Question 727
A field engineer sees low client throughput during a busy event despite acceptable SNR and a healthy wired uplink. A deployment job reports success. Which observed result would actually validate the affected service?
- Confirm new CRC and alignment error rates stop rising during representative traffic.
- Confirm the application succeeds and path or policy counters show it follows the intended route while restricted probes remain denied.
- Confirm a new client completes Discover-Offer-Request-Ack and receives the approved gateway options.
- Confirm fewer retries and better representative throughput under equivalent RF load.
Explanation
Correct Answer
D:Confirm fewer retries and better representative throughput under equivalent RF load. Strong received signal does not rule out airtime interference or contention; troubleshooting must measure RF quality as well as power. The result tests actual working behavior, not merely a saved configuration. The decision applies to the described rf interference versus weak coverage situation.
Incorrect Answers
A:Confirm new CRC and alignment error rates stop rising during representative traffic. This instead concerns physical link crc and optical errors. Physical-layer faults can corrupt frames without taking the interface administratively down; clean routing adjacency does not rule them out. It would not establish that this function actually works. The immediate problem concerns rf interference versus weak coverage.
B:Confirm the application succeeds and path or policy counters show it follows the intended route while restricted probes remain denied. This instead concerns traceroute path and acl filtering. Traceroute helps localize a path but hop response filtering can be misleading; successful application flows and policy counters confirm forwarding. It would not establish that this function actually works. The immediate problem concerns rf interference versus weak coverage.
C:Confirm a new client completes Discover-Offer-Request-Ack and receives the approved gateway options. This instead concerns dhcp discover without offer. Wi-Fi association and Ethernet link status do not prove DHCP success; the exchange depends on server access and subnet-correct relay. It would not establish that this function actually works. The immediate problem concerns rf interference versus weak coverage.
Question 728
A field engineer sees low client throughput during a busy event despite acceptable SNR and a healthy wired uplink. If the revised setting disrupts users, which controlled rollback would be most relevant?
- Return to a tested optic and cable path and roll back the unsupported interface changes if errors persist.
- Reinstate the last known-good route and narrow filter rule if the changed policy expands access or causes new blackholes.
- Reinstate the last stable channel and power plan if the adjustment introduces a new coverage gap.
- Restore the prior DHCP relay and client scope while isolating the route or server change.
Explanation
Correct Answer
C:Reinstate the last stable channel and power plan if the adjustment introduces a new coverage gap. Strong received signal does not rule out airtime interference or contention; troubleshooting must measure RF quality as well as power. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described rf interference versus weak coverage situation.
Incorrect Answers
A:Return to a tested optic and cable path and roll back the unsupported interface changes if errors persist. This instead concerns physical link crc and optical errors. Physical-layer faults can corrupt frames without taking the interface administratively down; clean routing adjacency does not rule them out. It would not safely roll back the relevant failed change. The immediate problem concerns rf interference versus weak coverage. For the incident in this item: A field engineer sees low client throughput during a busy event despite acceptable SNR and a healthy wired uplink.
B:Reinstate the last known-good route and narrow filter rule if the changed policy expands access or causes new blackholes. This instead concerns traceroute path and acl filtering. Traceroute helps localize a path but hop response filtering can be misleading; successful application flows and policy counters confirm forwarding. It would not safely roll back the relevant failed change. The immediate problem concerns rf interference versus weak coverage.
D:Restore the prior DHCP relay and client scope while isolating the route or server change. This instead concerns dhcp discover without offer. Wi-Fi association and Ethernet link status do not prove DHCP success; the exchange depends on server access and subnet-correct relay. It would not safely roll back the relevant failed change. The immediate problem concerns rf interference versus weak coverage.
Question 729
A switch uplink has intermittent packet loss while its interface stays up and CRC counters rise quickly. Which investigation would best isolate the immediate network dependency?
- Inspect next-hop path, relevant routing entries, ACL hits and ICMP or trace response behavior at the suspected hop.
- Inspect client DHCP packets, SVI relay configuration and the server's scope or return path for the VLAN.
- Inspect physical-layer error counters, transceiver diagnostics, negotiated speed and cable or optic compatibility.
- Inspect DNS resolver addresses, lookup responses and direct IP connectivity separately from WLAN authentication.
Explanation
Correct Answer
C:Inspect physical-layer error counters, transceiver diagnostics, negotiated speed and cable or optic compatibility. Physical-layer faults can corrupt frames without taking the interface administratively down; clean routing adjacency does not rule them out. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described physical link crc and optical errors situation.
Incorrect Answers
A:Inspect next-hop path, relevant routing entries, ACL hits and ICMP or trace response behavior at the suspected hop. This instead concerns traceroute path and acl filtering. Traceroute helps localize a path but hop response filtering can be misleading; successful application flows and policy counters confirm forwarding. It does not isolate the cause of the stated incident. The immediate problem concerns physical link crc and optical errors.
B:Inspect client DHCP packets, SVI relay configuration and the server's scope or return path for the VLAN. This instead concerns dhcp discover without offer. Wi-Fi association and Ethernet link status do not prove DHCP success; the exchange depends on server access and subnet-correct relay. It does not isolate the cause of the stated incident. The immediate problem concerns physical link crc and optical errors.
D:Inspect DNS resolver addresses, lookup responses and direct IP connectivity separately from WLAN authentication. This instead concerns dns resolution versus access association. Name resolution failures can mimic general network outages even when identity authentication, IP addressing and routing already work. It does not isolate the cause of the stated incident. The immediate problem concerns physical link crc and optical errors.
Question 730
A switch uplink has intermittent packet loss while its interface stays up and CRC counters rise quickly. Which specific corrective design step best meets the stated campus requirement?
- Correct the specific route or permitted ACL rule for the approved application flow without opening all traffic.
- Repair the damaged or mismatched cabling or transceiver and align supported link parameters at both ends.
- Restore the correct relay, authorized DHCP scope and routing for the affected broadcast domain.
- Provide reachable approved DNS service information without changing already-successful WLAN admission settings.
Explanation
Correct Answer
B:Repair the damaged or mismatched cabling or transceiver and align supported link parameters at both ends. Physical-layer faults can corrupt frames without taking the interface administratively down; clean routing adjacency does not rule them out. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described physical link crc and optical errors situation.
Incorrect Answers
A:Correct the specific route or permitted ACL rule for the approved application flow without opening all traffic. This instead concerns traceroute path and acl filtering. Traceroute helps localize a path but hop response filtering can be misleading; successful application flows and policy counters confirm forwarding. It would not implement the specifically required change. The immediate problem concerns physical link crc and optical errors.
C:Restore the correct relay, authorized DHCP scope and routing for the affected broadcast domain. This instead concerns dhcp discover without offer. Wi-Fi association and Ethernet link status do not prove DHCP success; the exchange depends on server access and subnet-correct relay. It would not implement the specifically required change. The immediate problem concerns physical link crc and optical errors.
D:Provide reachable approved DNS service information without changing already-successful WLAN admission settings. This instead concerns dns resolution versus access association. Name resolution failures can mimic general network outages even when identity authentication, IP addressing and routing already work. It would not implement the specifically required change. The immediate problem concerns physical link crc and optical errors.
