HP HPE7-A01 Practice Test 39

Question 380

Following a campus change for this issue—two tenants reuse 10.0.0.0/8 and must stay isolated—which result most directly verifies that the remedy works?

Compare chosen next hop for two addresses in different prefix lengths.
Display both identical routes in distinct VRFs and test isolation.
Capture relay source and server replies for the client VLAN.
Inspect received default and chosen route after policy evaluation.

Explanation

Correct Answer

VRFs maintain independent route tables and overlapping address space. Display both identical routes in distinct VRFs and test isolation directly tests the desired behavior.

Incorrect Answers

More-specific prefixes normally override less-specific matches in route lookup. That observation tests a different condition, not the required result.

DHCP broadcasts require relay when the server is beyond a router. That observation tests a different condition, not the required result.

Route import policy can protect internal next-hop expectations. That observation tests a different condition, not the required result.

Question 381

After completing the planned work for this situation—a device has dual power supplies connected to the same power circuit—how should success be checked?

Fail one source safely and check device power alarm and forwarding.
Observe one logical LACP neighbor bundle spanning both paths.
Exercise DHCP renewal with the primary server disabled in a lab.
Map failure domains and test representative single-component outages.

Explanation

Correct Answer

Two supplies on one circuit do not protect against that circuit's failure. Fail one source safely and check device power alarm and forwarding directly tests the desired behavior.

Incorrect Answers

Multichassis aggregation depends on coordinated LAG identity at the peer pair. That observation tests a different condition, not the required result.

DHCP address assignment should not depend on one failed server. That observation tests a different condition, not the required result.

Device redundancy is ineffective when both paths depend on one shared failed component. That observation tests a different condition, not the required result.

Question 382

A dense WLAN has noticeable overhead even when user data is light. Which change most directly meets this campus requirement?

Match the AP power requirement with a supported 802.3af/at/bt PoE budget.
Apply 802.1X port access control with a supported authentication server.
Use 802.11 contention and collision-avoidance planning rather than Ethernet full-duplex assumptions.
Account for periodic beacons and other 802.11 management airtime.

Explanation

Correct Answer

Beacons and management frames consume radio airtime independently of application payload. The engineer should account for periodic beacons and other 802.11 management airtime.

Incorrect Answers

PoE classes and available per-port power affect whether an AP can enable full capability. It is not a direct remedy for the condition described.

802.1X controls port authorization before granting authenticated network access. It is not a direct remedy for the condition described.

802.11 stations contend for shared airtime, so carrier-sense and backoff affect throughput. It is not a direct remedy for the condition described.

Question 383

A technician has applied this fix: Check the inter-switch link connectivity and VSX state. Which observation would provide the strongest acceptance evidence?

Query ARP for the gateway through each peer during a link-failure pilot.
Review ISL operational state and VSX consistency messages.
Simulate controlled keepalive or ISL loss and review forwarded traffic.
Record port role and convergence time after a controlled link event.

Explanation

Correct Answer

The VSX inter-switch link carries peer coordination and state traffic. Review ISL operational state and VSX consistency messages directly tests the desired behavior.

Incorrect Answers

VSX active gateway provides a shared first-hop identity on appropriate SVIs. That observation tests a different condition, not the required result.

Peer-state detection and the configured safeguards govern split failure response. That observation tests a different condition, not the required result.

Rapid spanning tree speeds appropriate topology changes compared with legacy STP. That observation tests a different condition, not the required result.

Question 384

A network team reports the following condition: A router must prefer the longest matching destination prefix. Select the most appropriate response.

Correct incompatible interface MTU or documented OSPF handling.
Tune supported interface costs consistently with the topology.
Configure deliberate default origination with correct conditions.
Verify longest-prefix route selection instead of relying on next-hop metric alone.

Explanation

Correct Answer

More-specific prefixes normally override less-specific matches in route lookup. The engineer should verify longest-prefix route selection instead of relying on next-hop metric alone.

Incorrect Answers

Database description exchange can fail when MTU expectations differ. It is not a direct remedy for the condition described.

OSPF SPF uses accumulated interface metrics for path selection. It is not a direct remedy for the condition described.

OSPF does not automatically inject a default solely because WAN exists. It is not a direct remedy for the condition described.

Question 385

The campus team is closing a service ticket about this condition: An OSPF neighbor is stuck in ExStart after an equipment swap. Which validation step is most relevant?

Compare an affected and unaffected endpoint on the same path.
Test the affected user certificate against a known-good endpoint.
Capture the roam time line and RTP loss at each stage.
Compare OSPF neighbor state and MTU.

Explanation

Correct Answer

OSPF DBD exchange can be impeded by incompatible link parameters. Compare OSPF neighbor state and MTU directly tests the desired behavior.

Incorrect Answers

Fault isolation starts by defining the smallest affected domain. That observation tests a different condition, not the required result.

Per-endpoint authentication problems are not necessarily switch-wide faults. That observation tests a different condition, not the required result.

Fast RF association and data-plane continuity are different measures. That observation tests a different condition, not the required result.

Question 386

The campus team is closing a service ticket about this condition: An AP repeatedly powers down its second radio. Which validation step is most relevant?

Inspect AP power limitations and switch allocated wattage.
Compare DNS lookup with direct IP connectivity.
Compare OSPF neighbor state and MTU.
Inspect the request/response exchange during failure.

Explanation

Correct Answer

Insufficient PoE can cause reduced AP functionality while link remains up. Inspect AP power limitations and switch allocated wattage directly tests the desired behavior.

Incorrect Answers

Name-resolution failure can resemble a general network outage. That observation tests a different condition, not the required result.

OSPF DBD exchange can be impeded by incompatible link parameters. That observation tests a different condition, not the required result.

Packet capture distinguishes transport retransmissions, resets and filtering. That observation tests a different condition, not the required result.

Question 387

Two tenants reuse 10.0.0.0/8 and must stay isolated. Which change most directly meets this campus requirement?

Configure DHCP relay/helper on the appropriate routed interface.
Filter or lower preference for the received default route.
Put customer routes in separate VRFs with controlled leaking where authorized.
Verify longest-prefix route selection instead of relying on next-hop metric alone.

Explanation

Correct Answer

VRFs maintain independent route tables and overlapping address space. The engineer should put customer routes in separate VRFs with controlled leaking where authorized.

Incorrect Answers

DHCP broadcasts require relay when the server is beyond a router. It is not a direct remedy for the condition described.

Route import policy can protect internal next-hop expectations. It is not a direct remedy for the condition described.

More-specific prefixes normally override less-specific matches in route lookup. It is not a direct remedy for the condition described.

Question 388

During campus implementation, many slow legacy devices dominate a shared WLAN. What should the engineer configure or correct?

Set suitable minimum data rates after validating coverage.
Consider 802.11r/k/v support and authentication-path tuning.
Inspect the client transmit power and return-path quality.
Evaluate latency, loss, jitter and airtime rather than throughput alone.

Explanation

Correct Answer

Low PHY rates consume more airtime for each transmitted byte. The engineer should set suitable minimum data rates after validating coverage.

Incorrect Answers

Roaming performance depends on scan, authentication and mobility handling. It is not a direct remedy for the condition described.

AP downlink power may exceed handheld uplink capability. It is not a direct remedy for the condition described.

Application quality depends on timing and reliability as well as bandwidth. It is not a direct remedy for the condition described.

Question 389

A technician has applied this fix: Investigate errors, drops and congestion rather than expecting Ethernet CSMA/CD collisions. Which observation would provide the strongest acceptance evidence?

Connect an unapproved and an approved endpoint and compare port-access sessions.
Inspect interface duplex and error counters while loading the link.
Capture NS, NA and RA messages and correlate the learned IPv6 neighbor table.
Observe channel busy time and retransmissions during a controlled multi-client transfer.

Explanation

Correct Answer

Modern switched full-duplex Ethernet does not use half-duplex collision detection. Inspect interface duplex and error counters while loading the link directly tests the desired behavior.

Incorrect Answers

802.1X controls port authorization before granting authenticated network access. That observation tests a different condition, not the required result.

IPv6 uses ICMPv6 Neighbor Discovery for neighbor and router discovery. That observation tests a different condition, not the required result.

802.11 stations contend for shared airtime, so carrier-sense and backoff affect throughput. That observation tests a different condition, not the required result.

Question 390

The engineer reports completing this change: Provide a supported voice VLAN and separate data-network authorization. Which verification should be included in the handover?

Check LLDP-MED voice information and both endpoints' effective VLANs.
Compare system clock, synchronization status and NTP reachability.
Capture DHCP DISCOVER/OFFER and validate access-to-uplink VLAN continuity.
Resolve a known management FQDN from the device's management network.

Explanation

Correct Answer

Voice and data traffic can share a port while retaining distinct VLAN and policy treatment. Check LLDP-MED voice information and both endpoints' effective VLANs directly tests the desired behavior.

Incorrect Answers

Accurate time is needed for logging and certificate validation. That observation tests a different condition, not the required result.

Power-up and Layer 2 association alone do not ensure IP address assignment. That observation tests a different condition, not the required result.

Control-plane enrollment can fail when hostnames cannot resolve correctly. That observation tests a different condition, not the required result.

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Question 380

Explanation

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Question 381

Explanation

Correct Answer

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Question 382

Explanation

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Question 383

Explanation

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Question 384

Explanation

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Question 385

Explanation

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Question 386

Explanation

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Question 387

Explanation

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Question 388

Explanation

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Question 389

Explanation

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Question 390

Explanation

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HPE Network Campus Access Professional (HPE7-A01) Practice Tests