HP HPE7-A01 Practice Test 72
Question 710
A visitor's Wi-Fi device has a valid address and default route yet cannot open cloud sites because the offered DNS resolver is stale. After the root cause is confirmed, which narrowly scoped configuration action should be selected?
- Fix the specific credential or policy issue for rejects and the transport or server path for timeouts for the affected campus deployment.
- Change channel plan, AP placement or source interference handling based on measured conditions rather than only boosting power for the affected campus deployment.
- Deliver reachable approved DNS service information without changing already-successful WLAN admission settings.
- Correct the damaged or mismatched cabling or transceiver and align supported link parameters at both ends.
Explanation
Correct Answer
C:Deliver reachable approved DNS service information without changing already-successful WLAN admission settings. Name resolution failures can mimic general network outages even when identity authentication, IP addressing and routing already work. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described dns resolution versus access association situation.
Incorrect Answers
A:Fix the specific credential or policy issue for rejects and the transport or server path for timeouts for the affected campus deployment. This instead concerns radius reject versus timeout. Access-Reject means the server evaluated and denied the request; a timeout indicates missing response and calls for different isolation. It would not implement the specifically required change. The immediate problem concerns dns resolution versus access association.
B:Change channel plan, AP placement or source interference handling based on measured conditions rather than only boosting power for the affected campus deployment. 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 implement the specifically required change. The immediate problem concerns dns resolution versus access association.
D: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 dns resolution versus access association.
Question 711
A visitor's Wi-Fi device has a valid address and default route yet cannot open cloud sites because the offered DNS resolver is stale. A deployment job reports success. Which observed result would actually validate the affected service?
- Confirm bad credentials remain rejected while a valid test account completes an authorized RADIUS transaction.
- Verify hostname lookup returns expected records and application access works through the intended name.
- Confirm fewer retries and better representative throughput under equivalent RF load.
- Confirm new CRC and alignment error rates stop rising during representative traffic.
Explanation
Correct Answer
B:Verify hostname lookup returns expected records and application access works through the intended name. Name resolution failures can mimic general network outages even when identity authentication, IP addressing and routing already work. The result tests actual working behavior, not merely a saved configuration. The decision applies to the described dns resolution versus access association situation.
Incorrect Answers
A:Confirm bad credentials remain rejected while a valid test account completes an authorized RADIUS transaction. This instead concerns radius reject versus timeout. Access-Reject means the server evaluated and denied the request; a timeout indicates missing response and calls for different isolation. It would not establish that this function actually works. The immediate problem concerns dns resolution versus access association.
C:Confirm fewer retries and better representative throughput under equivalent RF load. 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 establish that this function actually works. The immediate problem concerns dns resolution versus access association.
D: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 dns resolution versus access association.
Question 712
A visitor's Wi-Fi device has a valid address and default route yet cannot open cloud sites because the offered DNS resolver is stale. If the revised setting disrupts users, which controlled rollback would be most relevant?
- Reinstate the last functioning resolver DHCP option while preserving the healthy network association.
- Reinstate the previous valid server path and authentication profile rather than globally bypassing admission control.
- Reinstate the last stable channel and power plan if the adjustment introduces a new coverage gap.
- Return to a tested optic and cable path and roll back the unsupported interface changes if errors persist.
Explanation
Correct Answer
A:Reinstate the last functioning resolver DHCP option while preserving the healthy network association. Name resolution failures can mimic general network outages even when identity authentication, IP addressing and routing already work. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described dns resolution versus access association situation.
Incorrect Answers
B:Reinstate the previous valid server path and authentication profile rather than globally bypassing admission control. This instead concerns radius reject versus timeout. Access-Reject means the server evaluated and denied the request; a timeout indicates missing response and calls for different isolation. It would not safely roll back the relevant failed change. The immediate problem concerns dns resolution versus access association.
C: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 dns resolution versus access association.
D: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 dns resolution versus access association. For the incident in this item: A visitor's Wi-Fi device has a valid address and default route yet cannot open cloud sites because the offered DNS resolver is stale.
Question 713
Two campus users fail Wi-Fi authentication, but one log shows explicit Access-Reject and the other no RADIUS reply. Which investigation would best isolate the immediate network dependency?
- Compare RADIUS response codes, timeouts and server logs to distinguish rejected credentials from unreachable authentication infrastructure.
- Inspect RF spectrum activity, channel utilization, retries and SNR at the affected client position.
- Inspect physical-layer error counters, transceiver diagnostics, negotiated speed and cable or optic compatibility.
- Inspect next-hop path, relevant routing entries, ACL hits and ICMP or trace response behavior at the suspected hop.
Explanation
Correct Answer
A:Compare RADIUS response codes, timeouts and server logs to distinguish rejected credentials from unreachable authentication infrastructure. Access-Reject means the server evaluated and denied the request; a timeout indicates missing response and calls for different isolation. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described radius reject versus timeout situation.
Incorrect Answers
B:Inspect RF spectrum activity, channel utilization, retries and SNR at the affected client position. 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 does not isolate the cause of the stated incident. The immediate problem concerns radius reject versus timeout.
C: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 radius reject versus timeout.
D: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 radius reject versus timeout.
Question 714
Two campus users fail Wi-Fi authentication, but one log shows explicit Access-Reject and the other no RADIUS reply. 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.
- Fix the specific credential or policy issue for rejects and the transport or server path for timeouts.
Explanation
Correct Answer
D:Fix the specific credential or policy issue for rejects and the transport or server path for timeouts. Access-Reject means the server evaluated and denied the request; a timeout indicates missing response and calls for different isolation. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described radius reject versus timeout situation.
Incorrect Answers
A:Change channel plan, AP placement or source interference handling based on measured conditions rather than only boosting power. 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 implement the specifically required change. The immediate problem concerns radius reject versus timeout.
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 radius reject versus timeout.
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 radius reject versus timeout.
Question 715
Two campus users fail Wi-Fi authentication, but one log shows explicit Access-Reject and the other no RADIUS reply. Following a targeted change, which acceptance test would most directly demonstrate success?
- Verify fewer retries and better representative throughput under equivalent RF load.
- Verify new CRC and alignment error rates stop rising during representative traffic.
- Verify bad credentials remain rejected while a valid test account completes an authorized RADIUS transaction.
- Verify the application succeeds and path or policy counters show it follows the intended route while restricted probes remain denied.
Explanation
Correct Answer
C:Verify bad credentials remain rejected while a valid test account completes an authorized RADIUS transaction. Access-Reject means the server evaluated and denied the request; a timeout indicates missing response and calls for different isolation. The result tests actual working behavior, not merely a saved configuration. The decision applies to the described radius reject versus timeout situation.
Incorrect Answers
A:Verify fewer retries and better representative throughput under equivalent RF load. 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 establish that this function actually works. The immediate problem concerns radius reject versus timeout.
B: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 radius reject versus timeout.
D: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 radius reject versus timeout.
Question 716
Two campus users fail Wi-Fi authentication, but one log shows explicit Access-Reject and the other no RADIUS reply. The change fails acceptance. What is the safest targeted restoration action?
- Restore the last stable channel and power plan if the adjustment introduces a new coverage gap.
- Restore 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.
- Restore the last known-good route and narrow filter rule if the changed policy expands access or causes new blackholes.
Explanation
Correct Answer
B:Restore 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:Restore 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.
D: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 radius reject versus timeout.
Question 717
A site upgrade triggers both bad-credential errors and transport timeouts, and support treats them as one generic RF problem. Before implementing a remedy, what should the engineer check first?
- Cross-check RADIUS response codes, timeouts and server logs to distinguish rejected credentials from unreachable authentication infrastructure.
- Review RF spectrum activity, channel utilization, retries and SNR at the affected client position.
- Review physical-layer error counters, transceiver diagnostics, negotiated speed and cable or optic compatibility.
- Review next-hop path, relevant routing entries, ACL hits and ICMP or trace response behavior at the suspected hop.
Explanation
Correct Answer
A:Cross-check RADIUS response codes, timeouts and server logs to distinguish rejected credentials from unreachable authentication infrastructure. Access-Reject means the server evaluated and denied the request; a timeout indicates missing response and calls for different isolation. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described radius reject versus timeout situation.
Incorrect Answers
B:Review RF spectrum activity, channel utilization, retries and SNR at the affected client position. 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 does not isolate the cause of the stated incident. The immediate problem concerns radius reject versus timeout.
C: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 radius reject versus timeout.
D: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 radius reject versus timeout.
Question 718
A site upgrade triggers both bad-credential errors and transport timeouts, and support treats them as one generic RF problem. 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.
- Fix the specific credential or policy issue for rejects and the transport or server path for timeouts for the affected campus deployment.
Explanation
Correct Answer
D:Fix the specific credential or policy issue for rejects and the transport or server path for timeouts for the affected campus deployment. Access-Reject means the server evaluated and denied the request; a timeout indicates missing response and calls for different isolation. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described radius reject versus timeout situation.
Incorrect Answers
A:Change channel plan, AP placement or source interference handling based on measured conditions rather than only boosting power for the affected campus deployment. 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 implement the specifically required change. The immediate problem concerns radius reject versus timeout.
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 radius reject versus timeout.
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 radius reject versus timeout.
Question 719
A site upgrade triggers both bad-credential errors and transport timeouts, and support treats them as one generic RF problem. A deployment job reports success. Which observed result would actually validate the affected service?
- Confirm fewer retries and better representative throughput under equivalent RF load.
- Confirm new CRC and alignment error rates stop rising during representative traffic.
- Confirm bad credentials remain rejected while a valid test account completes an authorized RADIUS transaction.
- Confirm the application succeeds and path or policy counters show it follows the intended route while restricted probes remain denied.
Explanation
Correct Answer
C:Confirm bad credentials remain rejected while a valid test account completes an authorized RADIUS transaction. Access-Reject means the server evaluated and denied the request; a timeout indicates missing response and calls for different isolation. The result tests actual working behavior, not merely a saved configuration. The decision applies to the described radius reject versus timeout situation.
Incorrect Answers
A:Confirm fewer retries and better representative throughput under equivalent RF load. 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 establish that this function actually works. The immediate problem concerns radius reject versus timeout.
B: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 radius reject versus timeout.
D: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 radius reject versus timeout.
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.
