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Question 90
A campus installs switches with mixed IPv4 and IPv6 devices and new clients cannot reach IPv6 services. Which observation would best verify that the intended behavior is working?
- Inspect client IPv6 address, default router and a routed IPv6 test session
- Check the effective port role, tagged VLAN and authorization for moved endpoints
- Compare installed port and PoE usage to the floor plan and measured uplink utilization
- Check device registration, expected software level and effective port configuration
Explanation
Correct Answer
A:An IPv4 ping says nothing about native IPv6 operation. IPv6 clients may depend on router advertisements and prefixes separate from IPv4 DHCP.
Incorrect Answers
B:Actual assignments matter more than profile names. By contrast, an IPv4 ping says nothing about native IPv6 operation.
C:The acceptance test must reflect peak connectivity rather than a device count alone. It would not resolve the documented symptom; an IPv4 ping says nothing about native IPv6 operation.
D:A powered-up device may not yet have received its authorized profile. In this situation, an IPv4 ping says nothing about native IPv6 operation.
Question 91
A campus installs switches with mixed IPv4 and IPv6 devices and new clients cannot reach IPv6 services. Which belief about the configuration should the team reject?
- Change the AP's wireless transmit power to force a better management address
- Assume an operational IPv4 default gateway automatically supplies IPv6 routing
- Assume enough free copper ports also means enough electrical power for all APs
- Assume a faster uplink proves every access client receives 10 Gbps of usable throughput
Explanation
Correct Answer
B:IP versions maintain separate addressing and neighbor mechanisms. IPv6 clients may depend on router advertisements and prefixes separate from IPv4 DHCP.
Incorrect Answers
A:Radio power cannot select the correct wired DHCP scope. The relevant technical distinction is that iP versions maintain separate addressing and neighbor mechanisms.
C:Port availability and PoE budget are separate design constraints. It would not resolve the documented symptom; iP versions maintain separate addressing and neighbor mechanisms.
D:Shared resources and endpoints can remain constrained. By contrast, iP versions maintain separate addressing and neighbor mechanisms.
Question 92
A campus installs switches with mixed IPv4 and IPv6 devices and new clients cannot reach IPv6 services. What should be included in the rollout plan to limit a foreseeable failure?
- Restrict rogue router advertisements and test IPv6 policy parity
- Document explicit failover routes and approved path symmetry exceptions
- Pilot one AP with each expected SSID before cloning the profile
- Stage identity, management reachability and a recovery path before shipping
Explanation
Correct Answer
A:Unexpected RAs can hijack client routing despite good IPv4 controls. An IPv4 ping says nothing about native IPv6 operation.
Incorrect Answers
B:Changes in topology can cause stateful devices to drop asymmetric flows. By contrast, unexpected RAs can hijack client routing despite good IPv4 controls.
C:One missing tag can affect a particular user group across many APs. Here, however, unexpected RAs can hijack client routing despite good IPv4 controls.
D:Remote bootstrap failures need a controlled way back into the device. The relevant technical distinction is that unexpected RAs can hijack client routing despite good IPv4 controls.
Question 93
A municipal office needs resilient DNS and NTP for wired network devices. What should the network engineer do to address this requirement?
- Configure approved redundant resolver and time sources reachable from management VLANs
- Apply the approved AP port profile with required management and client VLAN transport
- Create a dedicated IoT segment with a narrow outbound access policy
- Select a supported aggregation or loop-prevention design based on the actual topology
Explanation
Correct Answer
A:Correct name resolution and time are foundations for authentication and log correlation. Independent service tests expose missing management routes.
Incorrect Answers
B:Access points may need tagged network segments beyond a single untagged VLAN. The relevant technical distinction is that correct name resolution and time are foundations for authentication and log correlation.
C:Restricted reachability limits risk from unmanaged endpoints. Here, however, correct name resolution and time are foundations for authentication and log correlation.
D:Parallel Ethernet paths require either negotiated bundling or controlled redundancy. In this situation, correct name resolution and time are foundations for authentication and log correlation.
Question 94
A municipal office needs resilient DNS and NTP for wired network devices. What should the team inspect to confirm the result?
- Trace a client packet through its access VLAN, SVI and distribution route
- Confirm guest DHCP, external browsing and denied access to clinical subnets
- Confirm assigned voice subnet, DHCP options, and a successful controller registration
- Compare switch DNS queries, synchronized clock state and server failover
Explanation
Correct Answer
D:Independent service tests expose missing management routes. Correct name resolution and time are foundations for authentication and log correlation.
Incorrect Answers
A:A full-path trace checks both L2 and L3 decisions. It would not resolve the documented symptom; independent service tests expose missing management routes.
B:The boundary is meaningful only when both paths are tested. Here, however, independent service tests expose missing management routes.
C:IP assignment alone cannot prove call-control reachability. In this situation, independent service tests expose missing management routes.
Question 95
A municipal office needs resilient DNS and NTP for wired network devices. Which misconception is most likely to obstruct a correct fix?
- Change the AP's wireless transmit power to force a better management address
- Assume matching switch hostnames automatically restore production VLAN configurations
- Assume a routed uplink continues to forward every previous VLAN without additional design
- Assume client web browsing proves management-plane DNS and NTP are healthy
Explanation
Correct Answer
D:Network-device source routing and ACLs can differ from users' traffic. Correct name resolution and time are foundations for authentication and log correlation.
Incorrect Answers
A:Radio power cannot select the correct wired DHCP scope. By contrast, network-device source routing and ACLs can differ from users' traffic.
B:A label does not recreate port profiles or allowed tags. In this situation, network-device source routing and ACLs can differ from users' traffic.
C:L3 interfaces do not automatically trunk arbitrary Layer 2 segments. It would not resolve the documented symptom; network-device source routing and ACLs can differ from users' traffic.
Question 96
A municipal office needs resilient DNS and NTP for wired network devices. What precaution is most important before the change is expanded?
- Stage gateway migration by subnet with DHCP and return-route checks
- Keep a switch-port migration matrix and run one test client before moving the entire floor
- Monitor upstream service availability and protect time-source authenticity
- Keep a known-good port profile and test bootstrap after each closet change
Explanation
Correct Answer
C:Incorrect time can break certificates and audit trails. Independent service tests expose missing management routes.
Incorrect Answers
A:Incorrect gateway changes can interrupt entire floors. The relevant technical distinction is that incorrect time can break certificates and audit trails.
B:A phased cutover limits outage if one port profile is wrong. It would not resolve the documented symptom; incorrect time can break certificates and audit trails.
D:A repeatable baseline prevents fleet-wide AP address errors. By contrast, incorrect time can break certificates and audit trails.
Question 97
A production AP receives an incorrect IPv4 address after an access switch migration. Which configuration decision most directly resolves the situation?
- Configure the intended voice VLAN, DHCP options and routed controller path
- Deploy an isolated guest VLAN or role with approved internet-only policy
- Apply the approved AP port profile with required management and client VLAN transport
- Check the tagged management VLAN and DHCP relay or server scope for that subnet
Explanation
Correct Answer
D:Incorrect tagging can direct an AP into the wrong address pool. Packet and lease evidence tie the symptom to a specific addressing path.
Incorrect Answers
A:Voice endpoints need both correct segmentation and service discovery. Here, however, incorrect tagging can direct an AP into the wrong address pool.
B:Shared wireless hardware need not imply shared internal reachability. The relevant technical distinction is that incorrect tagging can direct an AP into the wrong address pool.
C:Access points may need tagged network segments beyond a single untagged VLAN. By contrast, incorrect tagging can direct an AP into the wrong address pool.
Question 98
A production AP receives an incorrect IPv4 address after an access switch migration. Which TWO actions together implement the required change and verify that it works? Choose TWO.
- Verify dual-stack gateway advertisements, VLAN membership and IPv6 routing
- Check the tagged management VLAN and DHCP relay or server scope for that subnet
- Capture DHCP discovery and inspect the server's selected scope and resulting lease
- Deploy an isolated guest VLAN or role with approved internet-only policy
- Test a link failure with loop-prevention settings recorded and peer-reviewed
Explanation
Correct Answers
B:Incorrect tagging can direct an AP into the wrong address pool. Packet and lease evidence tie the symptom to a specific addressing path.
C:Packet and lease evidence tie the symptom to a specific addressing path. Incorrect tagging can direct an AP into the wrong address pool.
Incorrect Answers
A:IPv6 clients may depend on router advertisements and prefixes separate from IPv4 DHCP. In this situation, incorrect tagging can direct an AP into the wrong address pool.
D:Shared wireless hardware need not imply shared internal reachability. The relevant technical distinction is that incorrect tagging can direct an AP into the wrong address pool.
E:Recovery should not reintroduce a broadcast storm. Here, however, a repeatable baseline prevents fleet-wide AP address errors.
Question 99
A production AP receives an incorrect IPv4 address after an access switch migration. Which assumption would be most misleading when investigating this situation?
- Change the AP's wireless transmit power to force a better management address
- Assume a floor-plan marker always reflects the AP's connected switch port
- Connect a second unmanaged Ethernet cable and assume redundant paths cannot form loops
- Copy an unrelated uplink trunk profile onto every user edge port
Explanation
Correct Answer
A:Radio power cannot select the correct wired DHCP scope. Incorrect tagging can direct an AP into the wrong address pool.
Incorrect Answers
B:Cabling moves can invalidate drawings while the AP stays physically mounted. Here, however, radio power cannot select the correct wired DHCP scope.
C:A loop can amplify broadcasts and destabilize the entire VLAN. It would not resolve the documented symptom; radio power cannot select the correct wired DHCP scope.
D:A broad trunk can expose VLANs to untrusted endpoints. In this situation, radio power cannot select the correct wired DHCP scope.
Question 100
A production AP receives an incorrect IPv4 address after an access switch migration. Which THREE steps together deliver the change, verify its effect, and reduce rollout risk? Choose THREE.
- Keep a known-good port profile and test bootstrap after each closet change
- Check the tagged management VLAN and DHCP relay or server scope for that subnet
- Capture DHCP discovery and inspect the server's selected scope and resulting lease
- Test a link failure with loop-prevention settings recorded and peer-reviewed
- Deploy an isolated guest VLAN or role with approved internet-only policy
- Verify dual-stack gateway advertisements, VLAN membership and IPv6 routing
Explanation
Correct Answers
A:A repeatable baseline prevents fleet-wide AP address errors. Packet and lease evidence tie the symptom to a specific addressing path.
B:Incorrect tagging can direct an AP into the wrong address pool. Packet and lease evidence tie the symptom to a specific addressing path.
C:Packet and lease evidence tie the symptom to a specific addressing path. Incorrect tagging can direct an AP into the wrong address pool.
Incorrect Answers
D:Recovery should not reintroduce a broadcast storm. It would not resolve the documented symptom; a repeatable baseline prevents fleet-wide AP address errors.
E:Shared wireless hardware need not imply shared internal reachability. In this situation, incorrect tagging can direct an AP into the wrong address pool.
F:IPv6 clients may depend on router advertisements and prefixes separate from IPv4 DHCP. By contrast, incorrect tagging can direct an AP into the wrong address pool.
HPE Network Campus Access Professional (HPE7-A01) Practice Tests