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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.
Question 831
A school router receives a correct BGP prefix but the next-hop address is unreachable. Which safeguard best reduces the deployment risk in this case?
- Pilot the corrected supplicant profile and preserve a safe enrollment network
- Retest portal onboarding from a clean device session after policy adjustment
- Alert on monitoring data age and confirm user impact before mass changes
- Test secondary next-hop reachability before enabling a broad route change
Explanation
Correct Answer
D:A fix should preserve intended failover behavior. The chain reveals the missing transport dependency.
Incorrect Answers
A:Devices need a recovery path for certificate-profile mistakes. By contrast, a fix should preserve intended failover behavior.
B:Cached browser states can hide continuing redirect problems. The relevant technical distinction is that a fix should preserve intended failover behavior.
C:Operational decisions should use current evidence. It would not resolve the documented symptom; a fix should preserve intended failover behavior.
Question 832
A monitoring console shows a wireless outage while on-site users report normal application service. What is the most appropriate first technical change?
- Compare the SSID profile, assigned role/VLAN and upstream switch tagging
- Inspect certificate trust, supplicant EAP method and RADIUS failure codes
- Check telemetry timestamp and management connection before assuming a data-plane failure
- Inspect CRC/FCS errors, optics and physical negotiation before changing routing
Explanation
Correct Answer
C:A stale dashboard can be disconnected from current user experience. Fresh independent observations distinguish management telemetry lag.
Incorrect Answers
A:Device management and client data can use different network paths. The relevant technical distinction is that a stale dashboard can be disconnected from current user experience.
B:A wrong EAP profile or trust chain can surface as a generic login prompt. Here, however, a stale dashboard can be disconnected from current user experience.
D:Frame errors can degrade service without dropping carrier. By contrast, a stale dashboard can be disconnected from current user experience.
Question 833
A monitoring console shows a wireless outage while on-site users report normal application service. Which observation would best verify that the intended behavior is working?
- Inspect live VLAN interfaces and trunk tags against the last working snapshot
- Correlate server resource graphs, request latency and failed user sessions
- Compare UXI or test client results with AP heartbeat age and log times
- Inspect BGP best path and recursive route lookup to the physical egress
Explanation
Correct Answer
C:Fresh independent observations distinguish management telemetry lag. A stale dashboard can be disconnected from current user experience.
Incorrect Answers
A:A targeted diff isolates the missing service. The relevant technical distinction is that fresh independent observations distinguish management telemetry lag.
B:Matching peaks demonstrate the backend bottleneck. Here, however, fresh independent observations distinguish management telemetry lag.
D:The chain reveals the missing transport dependency. In this situation, fresh independent observations distinguish management telemetry lag.
Question 834
A monitoring console shows a wireless outage while on-site users report normal application service. Which belief about the configuration should the team reject?
- Replace every upstream router because some VLANs remain reachable
- Increase AP power to fix a portal server that is unreachable through guest policy
- Assume neighbor Full means every user application must be reachable
- Reboot every AP because a historical red dashboard icon persists
Explanation
Correct Answer
D:A stale alarm is not proof devices currently fail. A stale dashboard can be disconnected from current user experience.
Incorrect Answers
A:Partial failure does not prove global router hardware failure. Here, however, a stale alarm is not proof devices currently fail.
B:More signal does not correct service routing. It would not resolve the documented symptom; a stale alarm is not proof devices currently fail.
C:OSPF adjacency is not application connectivity. In this situation, a stale alarm is not proof devices currently fail.
Question 835
A monitoring console shows a wireless outage while on-site users report normal application service. What should be included in the rollout plan to limit a foreseeable failure?
- Map the patch-panel and revalidate the intended access port role
- Test secondary next-hop reachability before enabling a broad route change
- Alert on monitoring data age and confirm user impact before mass changes
- Pilot the corrected supplicant profile and preserve a safe enrollment network
Explanation
Correct Answer
C:Operational decisions should use current evidence. Fresh independent observations distinguish management telemetry lag.
Incorrect Answers
A:Physical cabling records can prevent recurring VLAN misplacement. By contrast, operational decisions should use current evidence.
B:A fix should preserve intended failover behavior. It would not resolve the documented symptom; operational decisions should use current evidence.
D:Devices need a recovery path for certificate-profile mistakes. In this situation, operational decisions should use current evidence.
Question 836
A network engineer sees repeated 802.1X timeouts only when RADIUS server CPU spikes. What should the network engineer do to address this requirement?
- Investigate RADIUS response time and server capacity rather than endpoint signal alone
- Inspect access VLAN, DHCP snooping trust and server/relay reachability
- Trace association, DHCP, DNS, guest policy and portal redirect in order
- Inspect certificate trust, supplicant EAP method and RADIUS failure codes
Explanation
Correct Answer
A:Overloaded authentication infrastructure can delay otherwise correct exchanges. Matching peaks demonstrate the backend bottleneck.
Incorrect Answers
B:A wrong patch or trunk membership can direct offers from the wrong scope. It would not resolve the documented symptom; overloaded authentication infrastructure can delay otherwise correct exchanges.
C:Each stage has distinct dependencies beyond radio signal. The relevant technical distinction is that overloaded authentication infrastructure can delay otherwise correct exchanges.
D:A wrong EAP profile or trust chain can surface as a generic login prompt. By contrast, overloaded authentication infrastructure can delay otherwise correct exchanges.
Question 837
A network engineer sees repeated 802.1X timeouts only when RADIUS server CPU spikes. What should the team inspect to confirm the result?
- 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 live VLAN interfaces and trunk tags against the last working snapshot
Explanation
Correct Answer
A:Matching peaks demonstrate the backend bottleneck. Overloaded authentication infrastructure can delay otherwise correct exchanges.
Incorrect Answers
B:Controlled substitution isolates a physical defect. Here, however, matching peaks demonstrate the backend bottleneck.
C:Evidence locates the first blocked or missing hop. The relevant technical distinction is that matching peaks demonstrate the backend bottleneck.
D:A targeted diff isolates the missing service. By contrast, matching peaks demonstrate the backend bottleneck.
Question 838
An auditorium Wi-Fi cell has many users on a low basic data rate, consuming most of the radio airtime. Which configuration decision most directly resolves the situation?
- Evaluate supported band steering and cell design without excluding legacy clients
- Review antenna placement, multipath and fallback coverage around moving obstructions
- Review minimum/basic rates with measured coverage and legacy client requirements
- Review class allocation and rate limits for video and voice separately
Explanation
Correct Answer
C:Slow management traffic consumes disproportionate airtime in dense cells. Higher rates are useful only when edge devices still operate.
Incorrect Answers
A:Moving compatible users can reduce 2.4 GHz contention. The relevant technical distinction is that slow management traffic consumes disproportionate airtime in dense cells.
B:Temporary shielding can change signal-to-noise and retransmission needs. Here, however, slow management traffic consumes disproportionate airtime in dense cells.
D:Application priorities and shaping limits need proportionate capacity. In this situation, slow management traffic consumes disproportionate airtime in dense cells.
Question 839
An auditorium Wi-Fi cell has many users on a low basic data rate, consuming most of the radio airtime. Which check most directly demonstrates the desired network behavior?
- Measure call jitter, queue drops and marking preservation across wired/wireless hops
- Inspect ingress classification and queue selection for marked and unmarked test traffic
- Compare channel utilization and client connection success before and after rate tuning
- Test a live class, bulk stream and ordinary browsing under the revised policy
Explanation
Correct Answer
C:Higher rates are useful only when edge devices still operate. Slow management traffic consumes disproportionate airtime in dense cells.
Incorrect Answers
A:Voice quality must improve on the actual congested path. Here, however, higher rates are useful only when edge devices still operate.
B:The effective treatment shows whether trust rules are applied. It would not resolve the documented symptom; higher rates are useful only when edge devices still operate.
D:Three service types reveal whether the change is appropriately targeted. In this situation, higher rates are useful only when edge devices still operate.
Question 840
An auditorium Wi-Fi cell has many users on a low basic data rate, consuming most of the radio airtime. Which assumption would be most misleading when investigating this situation?
- Assume a low five-minute average utilization guarantees zero short-term queue loss
- Replace core routing tables to fix a radio capability mismatch
- Maximize advertised transmit power instead of addressing long low-rate airtime use
- Assume low useful throughput always means the AP is underutilized
Explanation
Correct Answer
C:More signal does not remove the airtime cost of slow transmissions. Slow management traffic consumes disproportionate airtime in dense cells.
Incorrect Answers
A:Averages can hide momentary saturation. By contrast, more signal does not remove the airtime cost of slow transmissions.
B:Wired routes cannot make a client support unsupported WLAN settings. In this situation, more signal does not remove the airtime cost of slow transmissions.
D:Failed transmissions can occupy most of the channel. It would not resolve the documented symptom; more signal does not remove the airtime cost of slow transmissions.
HPE Network Campus Access Professional (HPE7-A01) Practice Tests
