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Question 780
A customer service manager wants a dashboard representing actual Wi-Fi application quality at several branches. Which misconception is most likely to obstruct a correct fix?
- Use only core switch CPU data as a complete measurement of student Wi-Fi experience
- Assume an NAE script file produces alerts before an agent is instantiated or enabled
- Count access points alone and use that as the main application reliability metric
- Rely exclusively on a single point-in-time show command after an intermittent fault stops
Explanation
Correct Answer
C:Hardware count does not measure end-to-end performance. Synthetic clients can measure business service from the user's perspective.
Incorrect Answers
A:Healthy switches cannot prove every app works at the edge. In this situation, hardware count does not measure end-to-end performance.
B:A script definition is not necessarily a running monitoring instance. By contrast, hardware count does not measure end-to-end performance.
D:Transient errors may no longer be visible in one snapshot. It would not resolve the documented symptom; hardware count does not measure end-to-end performance.
Question 781
A customer service manager wants a dashboard representing actual Wi-Fi application quality at several branches. What precaution is most important before the change is expanded?
- Set event retention and time synchronization before the next incident
- Establish a canonical asset key and monitor inventory reconciliation
- Set service-level thresholds and an owner for each application test
- Restrict capture access and retention of sensitive data
Explanation
Correct Answer
C:Alerts need actionable definitions and response responsibility. The monitoring result must map to the problem users experience.
Incorrect Answers
A:Useful forensic history depends on preparation. The relevant technical distinction is that alerts need actionable definitions and response responsibility.
B:Stable identity reduces future duplicate incidents. It would not resolve the documented symptom; alerts need actionable definitions and response responsibility.
D:Mirrored frames can contain confidential information. By contrast, alerts need actionable definitions and response responsibility.
Question 782
A switch has a port mirror configured but the packet analyzer captures frames only in one direction. Which configuration decision most directly resolves the situation?
- Verify whether ingress, egress or both directions are mirrored and confirm the analyzer link
- Verify API credentials, user role, endpoint permissions and supported version
- Collect access switch and RADIUS authentication events with consistent timestamps
- Configure supported port mirroring to an authorized packet-capture destination
Explanation
Correct Answer
A:Mirror direction settings determine which frames can be observed. Missing response packets often reflect a direction misconfiguration.
Incorrect Answers
B:REST access depends on authentication and authorization independent of network ping. By contrast, mirror direction settings determine which frames can be observed.
C:Combined events reveal which part of AAA failed. Here, however, mirror direction settings determine which frames can be observed.
D:Mirroring provides traffic evidence while the production link remains active. The relevant technical distinction is that mirror direction settings determine which frames can be observed.
Question 783
A switch has a port mirror configured but the packet analyzer captures frames only in one direction. Which check most directly demonstrates the desired network behavior?
- Send a test request and reply and compare capture to source-port counters
- Review DNS, DHCP, WLAN association and application test outcomes from the sensor
- Increase errors in a safe lab test and inspect the agent's time-series graph and alert
- Correlate session ID, RADIUS response and interface event for a sample login
Explanation
Correct Answer
A:Missing response packets often reflect a direction misconfiguration. Mirror direction settings determine which frames can be observed.
Incorrect Answers
B:Service-level tests reveal failures missed by infrastructure-up status. In this situation, missing response packets often reflect a direction misconfiguration.
C:A configured script must actually create the expected monitored event. Here, however, missing response packets often reflect a direction misconfiguration.
D:Matching identifiers separate policy denial from unreachable services. The relevant technical distinction is that missing response packets often reflect a direction misconfiguration.
Question 784
A staff laptop associates to the WLAN and gets a valid DHCP lease but cannot reach its default gateway. What is the most appropriate first technical change?
- Check client role enforcement, local VLAN transport and gateway ARP before blaming RF
- Check the selected route, return path, ACL and actual firewall/state policy
- Inspect access VLAN, DHCP snooping trust and server/relay reachability
- Restore next-hop reachability in the intended transport or adjust peering design
Explanation
Correct Answer
A:Association and DHCP do not guarantee permitted gateway forwarding. Evidence locates the first blocked or missing hop.
Incorrect Answers
B:Control-plane learning does not guarantee data-plane delivery. In this situation, association and DHCP do not guarantee permitted gateway forwarding.
C:A wrong patch or trunk membership can direct offers from the wrong scope. Here, however, association and DHCP do not guarantee permitted gateway forwarding.
D:A BGP route cannot forward through an unresolved recursive next hop. It would not resolve the documented symptom; association and DHCP do not guarantee permitted gateway forwarding.
Question 785
A staff laptop associates to the WLAN and gets a valid DHCP lease but cannot reach its default gateway. Which observation would best verify that the intended behavior is working?
- Inspect BGP best path and recursive route lookup to the physical egress
- Capture the first failed DNS or HTTP redirect request and inspect policy logs
- Compare client ARP, effective role and switch gateway counters for a test packet
- Correlate server resource graphs, request latency and failed user sessions
Explanation
Correct Answer
C:Evidence locates the first blocked or missing hop. Association and DHCP do not guarantee permitted gateway forwarding.
Incorrect Answers
A:The chain reveals the missing transport dependency. By contrast, evidence locates the first blocked or missing hop.
B:The earliest failing step identifies the correct team. In this situation, evidence locates the first blocked or missing hop.
D:Matching peaks demonstrate the backend bottleneck. It would not resolve the documented symptom; evidence locates the first blocked or missing hop.
Question 786
A staff laptop associates to the WLAN and gets a valid DHCP lease but cannot reach its default gateway. Which belief about the configuration should the team reject?
- Change the prefix's route description to make the BGP next hop active
- Change the AP's radio channel without examining the working association and lease
- Rewrite BGP communities to repair corrupted Ethernet frames
- Assume a successful IPv4 ping proves the IPv6 path is permitted
Explanation
Correct Answer
B:Good RF cannot repair a blocked gateway policy. Association and DHCP do not guarantee permitted gateway forwarding.
Incorrect Answers
A:Labels do not create forwarding paths. The relevant technical distinction is that good RF cannot repair a blocked gateway policy.
C:Route policy cannot fix physical integrity faults. By contrast, good RF cannot repair a blocked gateway policy.
D:IPv4 and IPv6 use different addresses and filters. It would not resolve the documented symptom; good RF cannot repair a blocked gateway policy.
Question 787
A staff laptop associates to the WLAN and gets a valid DHCP lease but cannot reach its default gateway. What should be included in the rollout plan to limit a foreseeable failure?
- Document the replaced component and confirm port errors remain stable
- Collect a short packet trace before changing multiple variables
- Test secondary next-hop reachability before enabling a broad route change
- Alert on monitoring data age and confirm user impact before mass changes
Explanation
Correct Answer
B:Focused evidence preserves the cause during repair. Evidence locates the first blocked or missing hop.
Incorrect Answers
A:Intermittent media faults can recur after short tests. By contrast, focused evidence preserves the cause during repair.
C:A fix should preserve intended failover behavior. Here, however, focused evidence preserves the cause during repair.
D:Operational decisions should use current evidence. The relevant technical distinction is that focused evidence preserves the cause during repair.
Question 788
A wired office reports that only one VLAN lost connectivity after an access switch firmware update. What should the network engineer do to address this requirement?
- Inspect access VLAN, DHCP snooping trust and server/relay reachability
- Inspect certificate trust, supplicant EAP method and RADIUS failure codes
- Compare the affected VLAN membership, SVI status and installed switch configuration
- Review IPv6-specific ACL, router advertisements and neighbor discovery
Explanation
Correct Answer
C:A single-VLAN outage often points to a scoped configuration or software difference. A targeted diff isolates the missing service.
Incorrect Answers
A:A wrong patch or trunk membership can direct offers from the wrong scope. Here, however, a single-VLAN outage often points to a scoped configuration or software difference.
B:A wrong EAP profile or trust chain can surface as a generic login prompt. In this situation, a single-VLAN outage often points to a scoped configuration or software difference.
D:Dual-stack policy components are separate and can fail independently. The relevant technical distinction is that a single-VLAN outage often points to a scoped configuration or software difference.
Question 789
A wired office reports that only one VLAN lost connectivity after an access switch firmware update. What should the team inspect to confirm the result?
- Walk the same path with packet and WLAN telemetry enabled
- Correlate server resource graphs, request latency and failed user sessions
- Compare UXI or test client results with AP heartbeat age and log times
- Inspect live VLAN interfaces and trunk tags against the last working snapshot
Explanation
Correct Answer
D:A targeted diff isolates the missing service. A single-VLAN outage often points to a scoped configuration or software difference.
Incorrect Answers
A:Repeatable measurements show whether each roam causes loss. In this situation, a targeted diff isolates the missing service.
B:Matching peaks demonstrate the backend bottleneck. Here, however, a targeted diff isolates the missing service.
C:Fresh independent observations distinguish management telemetry lag. It would not resolve the documented symptom; a targeted diff isolates the missing service.
Question 790
A wired office reports that only one VLAN lost connectivity after an access switch firmware update. Which misconception is most likely to obstruct a correct fix?
- Replace every upstream router because some VLANs remain reachable
- Reboot every AP because a historical red dashboard icon persists
- Turn off network authentication to avoid a confusing user prompt
- Rewrite BGP communities to repair corrupted Ethernet frames
Explanation
Correct Answer
A:Partial failure does not prove global router hardware failure. A single-VLAN outage often points to a scoped configuration or software difference.
Incorrect Answers
B:A stale alarm is not proof devices currently fail. It would not resolve the documented symptom; partial failure does not prove global router hardware failure.
C:That bypasses rather than fixes certificate validation. In this situation, partial failure does not prove global router hardware failure.
D:Route policy cannot fix physical integrity faults. By contrast, partial failure does not prove global router hardware failure.
HPE Network Campus Access Professional (HPE7-A01) Practice Tests
