HP HPE7-A01 Practice Test 5
Question 40
A remote-site AP has a working DHCP lease and local ping yet cannot establish its intended management control session after DNS servers were changed. If the revised setting disrupts users, which controlled rollback would be most relevant?
- Reinstate the last verified DNS settings for the site and confirm AP control connectivity before retrying the change.
- Restore the previous relay configuration and server route to restore leases while the new path is investigated.
- Reapply the last controlled management ACL and known-good out-of-band path to preserve access while repairing isolation for the affected campus deployment.
- Transfer the AP back to its known-good group and restore last published site configuration if the reassignment fails.
Explanation
Correct Answer
A:Reinstate the last verified DNS settings for the site and confirm AP control connectivity before retrying the change. An AP can have valid local addressing while failing discovery if name resolution or reachability to its intended management service is broken. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described ap dns and management reachability situation.
Incorrect Answers
B:Restore the previous relay configuration and server route to restore leases while the new path is investigated. This instead concerns dhcp scope and relay on routed vlans. A DHCP broadcast does not normally cross a routed boundary without relay; correct scope and return reachability are both necessary. It would not safely roll back the relevant failed change. The immediate problem concerns ap dns and management reachability.
C:Reapply the last controlled management ACL and known-good out-of-band path to preserve access while repairing isolation for the affected campus deployment. This instead concerns management vlan access isolation. Data-plane connectivity and administrative reachability serve different trust boundaries; a dedicated management design restricts who can configure devices. It would not safely roll back the relevant failed change. The immediate problem concerns ap dns and management reachability.
D:Transfer the AP back to its known-good group and restore last published site configuration if the reassignment fails. This instead concerns access point assignment to site and group. Central device enrollment and effective configuration group are separate steps; wrong scope can apply valid settings to the wrong site. It would not safely roll back the relevant failed change. The immediate problem concerns ap dns and management reachability.
Question 41
A newly deployed guest VLAN reaches its gateway interface but clients never receive DHCP offers from a server in another subnet. Which investigation would best isolate the immediate network dependency?
- Inspect client DHCP discovery, relay destination configuration and permitted server reply path at the VLAN gateway.
- Compare management interface or VRF assignments, reachability paths and source-access controls for administrative traffic.
- Inspect AP serial identity, selected site or group and effective inherited configuration before changing radios.
- Compare host address and prefix, default gateway, switch VLAN and the gateway interface's network assignment.
Explanation
Correct Answer
A:Inspect client DHCP discovery, relay destination configuration and permitted server reply path at the VLAN gateway. A DHCP broadcast does not normally cross a routed boundary without relay; correct scope and return reachability are both necessary. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described dhcp scope and relay on routed vlans situation.
Incorrect Answers
B:Compare management interface or VRF assignments, reachability paths and source-access controls for administrative traffic. This instead concerns management vlan access isolation. Data-plane connectivity and administrative reachability serve different trust boundaries; a dedicated management design restricts who can configure devices. It does not isolate the cause of the stated incident. The immediate problem concerns dhcp scope and relay on routed vlans.
C:Inspect AP serial identity, selected site or group and effective inherited configuration before changing radios. This instead concerns access point assignment to site and group. Central device enrollment and effective configuration group are separate steps; wrong scope can apply valid settings to the wrong site. It does not isolate the cause of the stated incident. The immediate problem concerns dhcp scope and relay on routed vlans.
D:Compare host address and prefix, default gateway, switch VLAN and the gateway interface's network assignment. This instead concerns ipv4 subnet and gateway correctness. A host needs coherent subnet membership and gateway information; link-up cannot compensate for an incorrect prefix or default router. It does not isolate the cause of the stated incident. The immediate problem concerns dhcp scope and relay on routed vlans.
Question 42
A newly deployed guest VLAN reaches its gateway interface but clients never receive DHCP offers from a server in another subnet. Which specific corrective design step best meets the stated campus requirement?
- Place management traffic in the approved dedicated interface or VRF and constrain permitted administrator sources.
- Assign the AP to the correct device group and apply the intended approved WLAN configuration.
- Correct the host's DHCP scope or static configuration so address, prefix and gateway belong to the intended subnet.
- Configure the appropriate DHCP relay on the routed interface and ensure the server scope and return path match the client subnet.
Explanation
Correct Answer
D:Configure the appropriate DHCP relay on the routed interface and ensure the server scope and return path match the client subnet. A DHCP broadcast does not normally cross a routed boundary without relay; correct scope and return reachability are both necessary. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described dhcp scope and relay on routed vlans situation.
Incorrect Answers
A:Place management traffic in the approved dedicated interface or VRF and constrain permitted administrator sources. This instead concerns management vlan access isolation. Data-plane connectivity and administrative reachability serve different trust boundaries; a dedicated management design restricts who can configure devices. It would not implement the specifically required change. The immediate problem concerns dhcp scope and relay on routed vlans.
B:Assign the AP to the correct device group and apply the intended approved WLAN configuration. This instead concerns access point assignment to site and group. Central device enrollment and effective configuration group are separate steps; wrong scope can apply valid settings to the wrong site. It would not implement the specifically required change. The immediate problem concerns dhcp scope and relay on routed vlans.
C:Correct the host's DHCP scope or static configuration so address, prefix and gateway belong to the intended subnet. This instead concerns ipv4 subnet and gateway correctness. A host needs coherent subnet membership and gateway information; link-up cannot compensate for an incorrect prefix or default router. It would not implement the specifically required change. The immediate problem concerns dhcp scope and relay on routed vlans.
Question 43
A newly deployed guest VLAN reaches its gateway interface but clients never receive DHCP offers from a server in another subnet. Following a targeted change, which acceptance test would most directly demonstrate success?
- Verify approved NOC sessions succeed and blocked campus-client sources cannot reach management services.
- Verify the AP's effective settings, advertised SSIDs and client association to the target site match the design.
- Capture DHCP discover, relay, offer and acknowledgment packets to confirm clients receive appropriate leases.
- Use host route inspection and successful traffic to both local and remote approved destinations as proof.
Explanation
Correct Answer
C:Capture DHCP discover, relay, offer and acknowledgment packets to confirm clients receive appropriate leases. A DHCP broadcast does not normally cross a routed boundary without relay; correct scope and return reachability are both necessary. The result tests actual working behavior, not merely a saved configuration. The decision applies to the described dhcp scope and relay on routed vlans situation.
Incorrect Answers
A:Verify approved NOC sessions succeed and blocked campus-client sources cannot reach management services. This instead concerns management vlan access isolation. Data-plane connectivity and administrative reachability serve different trust boundaries; a dedicated management design restricts who can configure devices. It would not establish that this function actually works. The immediate problem concerns dhcp scope and relay on routed vlans.
B:Verify the AP's effective settings, advertised SSIDs and client association to the target site match the design. This instead concerns access point assignment to site and group. Central device enrollment and effective configuration group are separate steps; wrong scope can apply valid settings to the wrong site. It would not establish that this function actually works. The immediate problem concerns dhcp scope and relay on routed vlans.
D:Use host route inspection and successful traffic to both local and remote approved destinations as proof. This instead concerns ipv4 subnet and gateway correctness. A host needs coherent subnet membership and gateway information; link-up cannot compensate for an incorrect prefix or default router. It would not establish that this function actually works. The immediate problem concerns dhcp scope and relay on routed vlans.
Question 44
A newly deployed guest VLAN reaches its gateway interface but clients never receive DHCP offers from a server in another subnet. The change fails acceptance. What is the safest targeted restoration action?
- Reapply the last controlled management ACL and known-good out-of-band path to preserve access while repairing isolation.
- Reinstate the previous relay configuration and server route to restore leases while the new path is investigated.
- Move the AP back to its known-good group and restore last published site configuration if the reassignment fails.
- Restore the previous correct scope mapping and lease parameters, then renew a test client before wider rollout.
Explanation
Correct Answer
B:Reinstate the previous relay configuration and server route to restore leases while the new path is investigated. A DHCP broadcast does not normally cross a routed boundary without relay; correct scope and return reachability are both necessary. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described dhcp scope and relay on routed vlans situation.
Incorrect Answers
A:Reapply the last controlled management ACL and known-good out-of-band path to preserve access while repairing isolation. This instead concerns management vlan access isolation. Data-plane connectivity and administrative reachability serve different trust boundaries; a dedicated management design restricts who can configure devices. It would not safely roll back the relevant failed change. The immediate problem concerns dhcp scope and relay on routed vlans.
C:Move the AP back to its known-good group and restore last published site configuration if the reassignment fails. This instead concerns access point assignment to site and group. Central device enrollment and effective configuration group are separate steps; wrong scope can apply valid settings to the wrong site. It would not safely roll back the relevant failed change. The immediate problem concerns dhcp scope and relay on routed vlans.
D:Restore the previous correct scope mapping and lease parameters, then renew a test client before wider rollout. This instead concerns ipv4 subnet and gateway correctness. A host needs coherent subnet membership and gateway information; link-up cannot compensate for an incorrect prefix or default router. It would not safely roll back the relevant failed change. The immediate problem concerns dhcp scope and relay on routed vlans.
Question 45
A remote building uses a central DHCP service; after a routed SVI move, wireless clients remain in DHCP discovery despite good local signal. Before implementing a remedy, what should the engineer check first?
- Review client DHCP discovery, relay destination configuration and permitted server reply path at the VLAN gateway.
- Cross-check management interface or VRF assignments, reachability paths and source-access controls for administrative traffic.
- Review AP serial identity, selected site or group and effective inherited configuration before changing radios.
- Cross-check host address and prefix, default gateway, switch VLAN and the gateway interface's network assignment.
Explanation
Correct Answer
A:Review client DHCP discovery, relay destination configuration and permitted server reply path at the VLAN gateway. A DHCP broadcast does not normally cross a routed boundary without relay; correct scope and return reachability are both necessary. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described dhcp scope and relay on routed vlans situation.
Incorrect Answers
B:Cross-check management interface or VRF assignments, reachability paths and source-access controls for administrative traffic. This instead concerns management vlan access isolation. Data-plane connectivity and administrative reachability serve different trust boundaries; a dedicated management design restricts who can configure devices. It does not isolate the cause of the stated incident. The immediate problem concerns dhcp scope and relay on routed vlans.
C:Review AP serial identity, selected site or group and effective inherited configuration before changing radios. This instead concerns access point assignment to site and group. Central device enrollment and effective configuration group are separate steps; wrong scope can apply valid settings to the wrong site. It does not isolate the cause of the stated incident. The immediate problem concerns dhcp scope and relay on routed vlans.
D:Cross-check host address and prefix, default gateway, switch VLAN and the gateway interface's network assignment. This instead concerns ipv4 subnet and gateway correctness. A host needs coherent subnet membership and gateway information; link-up cannot compensate for an incorrect prefix or default router. It does not isolate the cause of the stated incident. The immediate problem concerns dhcp scope and relay on routed vlans.
Question 46
A remote building uses a central DHCP service; after a routed SVI move, wireless clients remain in DHCP discovery despite good local signal. After the root cause is confirmed, which narrowly scoped configuration action should be selected?
- Put management traffic in the approved dedicated interface or VRF and constrain permitted administrator sources.
- Map the AP to the correct device group and apply the intended approved WLAN configuration.
- Repair the host's DHCP scope or static configuration so address, prefix and gateway belong to the intended subnet.
- Set up the appropriate DHCP relay on the routed interface and ensure the server scope and return path match the client subnet.
Explanation
Correct Answer
D:Set up the appropriate DHCP relay on the routed interface and ensure the server scope and return path match the client subnet. A DHCP broadcast does not normally cross a routed boundary without relay; correct scope and return reachability are both necessary. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described dhcp scope and relay on routed vlans situation.
Incorrect Answers
A:Put management traffic in the approved dedicated interface or VRF and constrain permitted administrator sources. This instead concerns management vlan access isolation. Data-plane connectivity and administrative reachability serve different trust boundaries; a dedicated management design restricts who can configure devices. It would not implement the specifically required change. The immediate problem concerns dhcp scope and relay on routed vlans.
B:Map the AP to the correct device group and apply the intended approved WLAN configuration. This instead concerns access point assignment to site and group. Central device enrollment and effective configuration group are separate steps; wrong scope can apply valid settings to the wrong site. It would not implement the specifically required change. The immediate problem concerns dhcp scope and relay on routed vlans.
C:Repair the host's DHCP scope or static configuration so address, prefix and gateway belong to the intended subnet. This instead concerns ipv4 subnet and gateway correctness. A host needs coherent subnet membership and gateway information; link-up cannot compensate for an incorrect prefix or default router. It would not implement the specifically required change. The immediate problem concerns dhcp scope and relay on routed vlans.
Question 47
A remote building uses a central DHCP service; after a routed SVI move, wireless clients remain in DHCP discovery despite good local signal. A deployment job reports success. Which observed result would actually validate the affected service?
- Confirm approved NOC sessions succeed and blocked campus-client sources cannot reach management services.
- Confirm the AP's effective settings, advertised SSIDs and client association to the target site match the design.
- Collect DHCP discover, relay, offer and acknowledgment packets to confirm clients receive appropriate leases.
- Choose host route inspection and successful traffic to both local and remote approved destinations as proof.
Explanation
Correct Answer
C:Collect DHCP discover, relay, offer and acknowledgment packets to confirm clients receive appropriate leases. A DHCP broadcast does not normally cross a routed boundary without relay; correct scope and return reachability are both necessary. The result tests actual working behavior, not merely a saved configuration. The decision applies to the described dhcp scope and relay on routed vlans situation.
Incorrect Answers
A:Confirm approved NOC sessions succeed and blocked campus-client sources cannot reach management services. This instead concerns management vlan access isolation. Data-plane connectivity and administrative reachability serve different trust boundaries; a dedicated management design restricts who can configure devices. It would not establish that this function actually works. The immediate problem concerns dhcp scope and relay on routed vlans.
B:Confirm the AP's effective settings, advertised SSIDs and client association to the target site match the design. This instead concerns access point assignment to site and group. Central device enrollment and effective configuration group are separate steps; wrong scope can apply valid settings to the wrong site. It would not establish that this function actually works. The immediate problem concerns dhcp scope and relay on routed vlans.
D:Choose host route inspection and successful traffic to both local and remote approved destinations as proof. This instead concerns ipv4 subnet and gateway correctness. A host needs coherent subnet membership and gateway information; link-up cannot compensate for an incorrect prefix or default router. It would not establish that this function actually works. The immediate problem concerns dhcp scope and relay on routed vlans.
Question 48
A remote building uses a central DHCP service; after a routed SVI move, wireless clients remain in DHCP discovery despite good local signal. The review requires TWO complementary actions: one diagnostic check and one controlled configuration remedy. Select TWO actions that together meet those requirements.
- Cross-check management interface or VRF assignments, reachability paths and source-access controls for administrative traffic.
- Review client DHCP discovery, relay destination configuration and permitted server reply path at the VLAN gateway.
- Map the AP to the correct device group and apply the intended approved WLAN configuration.
- Set up the appropriate DHCP relay on the routed interface and ensure the server scope and return path match the client subnet.
Explanation
Correct Answers
B:Review client DHCP discovery, relay destination configuration and permitted server reply path at the VLAN gateway. A DHCP broadcast does not normally cross a routed boundary without relay; correct scope and return reachability are both necessary. This is the required diagnosis or controlled remedy; the other keyed action supplies the complementary role. The decision applies to the described dhcp scope and relay on routed vlans situation.
D:Set up the appropriate DHCP relay on the routed interface and ensure the server scope and return path match the client subnet. A DHCP broadcast does not normally cross a routed boundary without relay; correct scope and return reachability are both necessary. This is the required diagnosis or controlled remedy; the other keyed action supplies the complementary role. The decision applies to the described dhcp scope and relay on routed vlans situation.
Incorrect Answers
A:Cross-check management interface or VRF assignments, reachability paths and source-access controls for administrative traffic. This instead concerns management vlan access isolation. Data-plane connectivity and administrative reachability serve different trust boundaries; a dedicated management design restricts who can configure devices. It is not one of the requested paired diagnosis and configuration actions. The immediate problem concerns dhcp scope and relay on routed vlans.
C:Map the AP to the correct device group and apply the intended approved WLAN configuration. This instead concerns access point assignment to site and group. Central device enrollment and effective configuration group are separate steps; wrong scope can apply valid settings to the wrong site. It is not one of the requested paired diagnosis and configuration actions. The immediate problem concerns dhcp scope and relay on routed vlans.
Question 49
An AOS-CX switch uses a dedicated management interface but a new remote-access ACL accidentally admits guest-subnet SSH sessions. Which investigation would best isolate the immediate network dependency?
- Inspect AP serial identity, selected site or group and effective inherited configuration before changing radios.
- Compare management interface or VRF assignments, reachability paths and source-access controls for administrative traffic.
- Compare host address and prefix, default gateway, switch VLAN and the gateway interface's network assignment.
- Inspect ICMPv6 router advertisements, RA flags, prefix information and default-route installation at the client.
Explanation
Correct Answer
B:Compare management interface or VRF assignments, reachability paths and source-access controls for administrative traffic. Data-plane connectivity and administrative reachability serve different trust boundaries; a dedicated management design restricts who can configure devices. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described management vlan access isolation situation.
Incorrect Answers
A:Inspect AP serial identity, selected site or group and effective inherited configuration before changing radios. This instead concerns access point assignment to site and group. Central device enrollment and effective configuration group are separate steps; wrong scope can apply valid settings to the wrong site. It does not isolate the cause of the stated incident. The immediate problem concerns management vlan access isolation.
C:Compare host address and prefix, default gateway, switch VLAN and the gateway interface's network assignment. This instead concerns ipv4 subnet and gateway correctness. A host needs coherent subnet membership and gateway information; link-up cannot compensate for an incorrect prefix or default router. It does not isolate the cause of the stated incident. The immediate problem concerns management vlan access isolation.
D:Inspect ICMPv6 router advertisements, RA flags, prefix information and default-route installation at the client. This instead concerns ipv6 ra and default-router discovery. IPv6 clients commonly learn prefixes and default-router presence from RAs; IPv4 DHCP success does not validate that control plane. It does not isolate the cause of the stated incident. The immediate problem concerns management vlan access isolation.
Question 50
An AOS-CX switch uses a dedicated management interface but a new remote-access ACL accidentally admits guest-subnet SSH sessions. Which specific corrective design step best meets the stated campus requirement?
- Place management traffic in the approved dedicated interface or VRF and constrain permitted administrator sources.
- Assign the AP to the correct device group and apply the intended approved WLAN configuration.
- Correct the host's DHCP scope or static configuration so address, prefix and gateway belong to the intended subnet.
- Enable appropriate authorized IPv6 RA behavior on the correct gateway interface with intended prefix and policy.
Explanation
Correct Answer
A:Place management traffic in the approved dedicated interface or VRF and constrain permitted administrator sources. Data-plane connectivity and administrative reachability serve different trust boundaries; a dedicated management design restricts who can configure devices. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described management vlan access isolation situation.
Incorrect Answers
B:Assign the AP to the correct device group and apply the intended approved WLAN configuration. This instead concerns access point assignment to site and group. Central device enrollment and effective configuration group are separate steps; wrong scope can apply valid settings to the wrong site. It would not implement the specifically required change. The immediate problem concerns management vlan access isolation.
C:Correct the host's DHCP scope or static configuration so address, prefix and gateway belong to the intended subnet. This instead concerns ipv4 subnet and gateway correctness. A host needs coherent subnet membership and gateway information; link-up cannot compensate for an incorrect prefix or default router. It would not implement the specifically required change. The immediate problem concerns management vlan access isolation.
D:Enable appropriate authorized IPv6 RA behavior on the correct gateway interface with intended prefix and policy. This instead concerns ipv6 ra and default-router discovery. IPv6 clients commonly learn prefixes and default-router presence from RAs; IPv4 DHCP success does not validate that control plane. It would not implement the specifically required change. The immediate problem concerns management vlan access isolation.
