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Question 820
A campus AP is reachable from management but one staff SSID cannot forward client traffic. What is the most appropriate first technical change?
- Check the selected route, return path, ACL and actual firewall/state policy
- Review IPv6-specific ACL, router advertisements and neighbor discovery
- Compare the SSID profile, assigned role/VLAN and upstream switch tagging
- Compare the affected VLAN membership, SVI status and installed switch configuration
Explanation
Correct Answer
C:Device management and client data can use different network paths. The first failed hop distinguishes WLAN policy from switch transport.
Incorrect Answers
A:Control-plane learning does not guarantee data-plane delivery. In this situation, device management and client data can use different network paths.
B:Dual-stack policy components are separate and can fail independently. By contrast, device management and client data can use different network paths.
D:A single-VLAN outage often points to a scoped configuration or software difference. It would not resolve the documented symptom; device management and client data can use different network paths.
Question 821
A campus AP is reachable from management but one staff SSID cannot forward client traffic. Which observation would best verify that the intended behavior is working?
- Test an affected client from association through its VLAN and gateway access
- Correlate server resource graphs, request latency and failed user sessions
- Compare error rate using a known-good cable or optic under the same load
- Inspect BGP best path and recursive route lookup to the physical egress
Explanation
Correct Answer
A:The first failed hop distinguishes WLAN policy from switch transport. Device management and client data can use different network paths.
Incorrect Answers
B:Matching peaks demonstrate the backend bottleneck. By contrast, the first failed hop distinguishes WLAN policy from switch transport.
C:Controlled substitution isolates a physical defect. It would not resolve the documented symptom; the first failed hop distinguishes WLAN policy from switch transport.
D:The chain reveals the missing transport dependency. The relevant technical distinction is that the first failed hop distinguishes WLAN policy from switch transport.
Question 822
A campus AP is reachable from management but one staff SSID cannot forward client traffic. Which belief about the configuration should the team reject?
- Treat a strong static RSSI value near the starting AP as proof roaming is healthy
- Replace the AP solely because its management dashboard looks healthy
- Turn off network authentication to avoid a confusing user prompt
- Assume a successful IPv4 ping proves the IPv6 path is permitted
Explanation
Correct Answer
B:Healthy management does not identify the missing client VLAN. Device management and client data can use different network paths.
Incorrect Answers
A:Moving clients cross new RF and authentication boundaries. The relevant technical distinction is that healthy management does not identify the missing client VLAN.
C:That bypasses rather than fixes certificate validation. By contrast, healthy management does not identify the missing client VLAN.
D:IPv4 and IPv6 use different addresses and filters. Here, however, healthy management does not identify the missing client VLAN.
Question 823
A campus AP is reachable from management but one staff SSID cannot forward client traffic. What should be included in the rollout plan to limit a foreseeable failure?
- Map the patch-panel and revalidate the intended access port role
- Correct one pilot AP and then review the shared profile before mass deployment
- Document the replaced component and confirm port errors remain stable
- Test one repaired port and maintain rollback for the firmware change
Explanation
Correct Answer
B:Shared template defects should not be rolled out blindly. The first failed hop distinguishes WLAN policy from switch transport.
Incorrect Answers
A:Physical cabling records can prevent recurring VLAN misplacement. Here, however, shared template defects should not be rolled out blindly.
C:Intermittent media faults can recur after short tests. The relevant technical distinction is that shared template defects should not be rolled out blindly.
D:Change control limits collateral impact. In this situation, shared template defects should not be rolled out blindly.
Question 824
A network edge experiences packet loss only during large file transfers, while small pings pass. What should the network engineer do to address this requirement?
- Investigate RADIUS response time and server capacity rather than endpoint signal alone
- Collect roam timing, EAP/FT events and RTP loss across the handoff
- Test path MTU, interface errors and queue drops under realistic packet sizes
- Check the selected route, return path, ACL and actual firewall/state policy
Explanation
Correct Answer
C:Size and load sensitivity can indicate MTU or congestion instead of simple reachability. Packet-size evidence narrows the failure mode.
Incorrect Answers
A:Overloaded authentication infrastructure can delay otherwise correct exchanges. It would not resolve the documented symptom; size and load sensitivity can indicate MTU or congestion instead of simple reachability.
B:Correlating reassociation and audio gaps isolates the transition. In this situation, size and load sensitivity can indicate MTU or congestion instead of simple reachability.
D:Control-plane learning does not guarantee data-plane delivery. Here, however, size and load sensitivity can indicate MTU or congestion instead of simple reachability.
Question 825
A network edge experiences packet loss only during large file transfers, while small pings pass. What should the team inspect to confirm the result?
- Trace DHCP Discover and Offer VLAN tags from client to server
- Compare error rate using a known-good cable or optic under the same load
- Run controlled DF packet tests and inspect discard/fragmentation counters
- Compare EAP exchange and certificate selection to the intended authentication profile
Explanation
Correct Answer
C:Packet-size evidence narrows the failure mode. Size and load sensitivity can indicate MTU or congestion instead of simple reachability.
Incorrect Answers
A:Packet path evidence reveals where the incorrect network is selected. It would not resolve the documented symptom; packet-size evidence narrows the failure mode.
B:Controlled substitution isolates a physical defect. In this situation, packet-size evidence narrows the failure mode.
D:Handshake evidence identifies credential versus configuration error. By contrast, packet-size evidence narrows the failure mode.
Question 826
A network edge experiences packet loss only during large file transfers, while small pings pass. Which misconception is most likely to obstruct a correct fix?
- Assume neighbor Full means every user application must be reachable
- Turn off network authentication to avoid a confusing user prompt
- Rewrite BGP communities to repair corrupted Ethernet frames
- Assume successful 64-byte ICMP proves every Ethernet payload will cross the path
Explanation
Correct Answer
D:Small tests do not exercise maximum frame size or sustained load. Size and load sensitivity can indicate MTU or congestion instead of simple reachability.
Incorrect Answers
A:OSPF adjacency is not application connectivity. The relevant technical distinction is that small tests do not exercise maximum frame size or sustained load.
B:That bypasses rather than fixes certificate validation. By contrast, small tests do not exercise maximum frame size or sustained load.
C:Route policy cannot fix physical integrity faults. It would not resolve the documented symptom; small tests do not exercise maximum frame size or sustained load.
Question 827
A network edge experiences packet loss only during large file transfers, while small pings pass. What precaution is most important before the change is expanded?
- Pilot roaming feature changes on the affected handset firmware
- Use an approved MTU change and retest real application flows
- Correct one pilot AP and then review the shared profile before mass deployment
- Map the patch-panel and revalidate the intended access port role
Explanation
Correct Answer
B:Quick interface tweaks can mask the true bottleneck. Packet-size evidence narrows the failure mode.
Incorrect Answers
A:Device-specific support can determine whether a setting helps. The relevant technical distinction is that quick interface tweaks can mask the true bottleneck.
C:Shared template defects should not be rolled out blindly. By contrast, quick interface tweaks can mask the true bottleneck.
D:Physical cabling records can prevent recurring VLAN misplacement. Here, however, quick interface tweaks can mask the true bottleneck.
Question 828
A school router receives a correct BGP prefix but the next-hop address is unreachable. Which configuration decision most directly resolves the situation?
- Review IPv6-specific ACL, router advertisements and neighbor discovery
- Restore next-hop reachability in the intended transport or adjust peering design
- Inspect access VLAN, DHCP snooping trust and server/relay reachability
- Check client role enforcement, local VLAN transport and gateway ARP before blaming RF
Explanation
Correct Answer
B:A BGP route cannot forward through an unresolved recursive next hop. The chain reveals the missing transport dependency.
Incorrect Answers
A:Dual-stack policy components are separate and can fail independently. The relevant technical distinction is that a BGP route cannot forward through an unresolved recursive next hop.
C:A wrong patch or trunk membership can direct offers from the wrong scope. Here, however, a BGP route cannot forward through an unresolved recursive next hop.
D:Association and DHCP do not guarantee permitted gateway forwarding. In this situation, a BGP route cannot forward through an unresolved recursive next hop.
Question 829
A school router receives a correct BGP prefix but the next-hop address is unreachable. Which check most directly demonstrates the desired network behavior?
- Correlate server resource graphs, request latency and failed user sessions
- Compare error rate using a known-good cable or optic under the same load
- Compare client ARP, effective role and switch gateway counters for a test packet
- Inspect BGP best path and recursive route lookup to the physical egress
Explanation
Correct Answer
D:The chain reveals the missing transport dependency. A BGP route cannot forward through an unresolved recursive next hop.
Incorrect Answers
A:Matching peaks demonstrate the backend bottleneck. In this situation, the chain reveals the missing transport dependency.
B:Controlled substitution isolates a physical defect. Here, however, the chain reveals the missing transport dependency.
C:Evidence locates the first blocked or missing hop. It would not resolve the documented symptom; the chain reveals the missing transport dependency.
Question 830
A school router receives a correct BGP prefix but the next-hop address is unreachable. Which TWO actions together implement the required change and verify that it works? Choose TWO.
- Restore next-hop reachability in the intended transport or adjust peering design
- Collect a short packet trace before changing multiple variables
- Review IPv6-specific ACL, router advertisements and neighbor discovery
- Inspect BGP best path and recursive route lookup to the physical egress
- Inspect certificate trust, supplicant EAP method and RADIUS failure codes
Explanation
Correct Answers
A:A BGP route cannot forward through an unresolved recursive next hop. The chain reveals the missing transport dependency.
D:The chain reveals the missing transport dependency. A BGP route cannot forward through an unresolved recursive next hop.
Incorrect Answers
B:Focused evidence preserves the cause during repair. It would not resolve the documented symptom; a fix should preserve intended failover behavior.
C:Dual-stack policy components are separate and can fail independently. In this situation, a BGP route cannot forward through an unresolved recursive next hop.
E:A wrong EAP profile or trust chain can surface as a generic login prompt. By contrast, a BGP route cannot forward through an unresolved recursive next hop.
HPE Network Campus Access Professional (HPE7-A01) Practice Tests