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HP HPE7-A01 Practice Test 8

Question 70

A network team reports the following condition: One end of a LAG initiates while the other is passive. Select the most appropriate response.

  1. Keep one LACP side active and the peer interoperable.
  2. Use a supported RA Guard policy on untrusted access ports.
  3. Enable the supported BPDU protection feature on the edge.
  4. Match region name, revision and VLAN-instance mappings.

Explanation

Correct Answer

A:

Active mode initiates LACP negotiations that passive mode answers. The engineer should keep one LACP side active and the peer interoperable.

Incorrect Answers

B:

RA Guard filters unauthorized IPv6 router announcements. It is not a direct remedy for the condition described.

C:

BPDU protection can isolate ports that violate the expected edge role. It is not a direct remedy for the condition described.

D:

MSTP region agreement is required for consistent internal topology calculation. It is not a direct remedy for the condition described.

Question 71

After completing the planned work for this situation—an engineer assumes enabling 802.11k forces clients onto another AP—how should success be checked?

  1. Capture DHCP packets after the successful association event.
  2. Measure multicast loss and occupied airtime under representative load.
  3. Observe neighbor reports and actual roaming decisions.
  4. Test representative single-band and dual-band scanners.

Explanation

Correct Answer

C:

802.11k supplies radio neighbor information while clients decide how to use it. Observe neighbor reports and actual roaming decisions directly tests the desired behavior.

Incorrect Answers

A:

Successful association does not guarantee an IPv4 address. That observation tests a different condition, not the required result.

B:

Wireless multicast can use rates and buffering unlike wired unicast. That observation tests a different condition, not the required result.

D:

A forced 5 GHz policy can exclude clients that lack that band. That observation tests a different condition, not the required result.

Question 72

A network team reports the following condition: A WLAN receives spoofed disconnect frames from an adjacent attacker. Select the most appropriate response.

  1. Enforce current posture result via RADIUS role/CoA policies.
  2. Enable WPA3/PMF on compatible SSIDs.
  3. Use supported higher-layer TLS or MACsec where appropriate.
  4. Deploy enterprise 802.1X and suitable RADIUS policy.

Explanation

Correct Answer

B:

Protected management frames prevent unauthenticated robust management manipulation. The engineer should enable WPA3/PMF on compatible SSIDs.

Incorrect Answers

A:

Dynamic authorization must reflect changing endpoint trust. It is not a direct remedy for the condition described.

C:

Encryption choice depends on Layer 2 versus application-layer trust boundaries. It is not a direct remedy for the condition described.

D:

Central identity policy allows per-user accountability and revocation. It is not a direct remedy for the condition described.

Question 73

The campus team is closing a service ticket about this condition: A trunk native VLAN differs between neighboring switches. Which validation step is most relevant?

  1. Trace host default gateway resolution and routed forwarding between VLANs.
  2. Capture LACP PDUs and verify both interfaces are in one bundle.
  3. Compare trunk operational state and capture an untagged test frame.
  4. Compare ingress broadcast rate before and after a controlled storm fixture.

Explanation

Correct Answer

C:

Native VLAN mismatch can misclassify untagged traffic. Compare trunk operational state and capture an untagged test frame directly tests the desired behavior.

Incorrect Answers

A:

VLAN creation alone provides Layer 2 membership, not inter-VLAN routing. That observation tests a different condition, not the required result.

B:

Active mode initiates LACP negotiations that passive mode answers. That observation tests a different condition, not the required result.

D:

Storm control limits excess broadcast or multicast traffic while loops are fixed. That observation tests a different condition, not the required result.

Question 74

Following a campus change for this issue—a network engineer cannot correlate interface drops across devices—which result most directly verifies that the remedy works?

  1. Verify NTP synchronization and correlate a known test event.
  2. Trigger a controlled counter change on the newly included port.
  3. Trigger the condition and inspect agent status and event output.
  4. Compare identical request using allowed and restricted test roles.

Explanation

Correct Answer

A:

Cross-device troubleshooting depends on aligned timestamps and measurements. Verify NTP synchronization and correlate a known test event directly tests the desired behavior.

Incorrect Answers

B:

An analytics agent evaluates the configured monitored objects, not every port automatically. That observation tests a different condition, not the required result.

C:

Network Analytics Engine agents can monitor specified switch conditions. That observation tests a different condition, not the required result.

D:

HTTP 403 typically indicates a privilege or access-policy denial. That observation tests a different condition, not the required result.

Question 75

A campus voice class suffers under uplink congestion. Which change most directly meets this campus requirement?

  1. Evaluate latency, loss, jitter and airtime rather than throughput alone.
  2. Apply suitable shaping or policing based on desired behavior.
  3. Reduce channel width when reuse and contention require it.
  4. Classify and prioritize the voice traffic in the appropriate egress queues.

Explanation

Correct Answer

D:

QoS scheduling helps latency-sensitive packets compete under load. The engineer should classify and prioritize the voice traffic in the appropriate egress queues.

Incorrect Answers

A:

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

B:

Shaping buffers over-rate traffic while policing can drop or remark it. It is not a direct remedy for the condition described.

C:

Wide channels can reduce the number of independent neighboring cells. It is not a direct remedy for the condition described.

Question 76

A technician has applied this fix: Find the exact matching ACE and its direction before broad changes. Which observation would provide the strongest acceptance evidence?

  1. Trace one permitted and denied test flow against hit counters.
  2. Compare an affected and unaffected endpoint on the same path.
  3. Capture DHCP DORA and inspect client VLAN.
  4. Capture the roam time line and RTP loss at each stage.

Explanation

Correct Answer

A:

ACL ordering and attachment point determine real packet authorization. Trace one permitted and denied test flow against hit counters directly tests the desired behavior.

Incorrect Answers

B:

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

C:

Association and authentication are separate from address assignment. That observation tests a different condition, not the required result.

D:

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

Question 77

For an HPE Aruba Networking campus deployment, bGP neighbors stay in Active even though ping works. Which action best addresses it?

  1. Check TCP port 179, source address and remote AS settings.
  2. Investigate co-channel airtime contention.
  3. Verify physical media, transceiver type and optical signal before routing.
  4. Capture on an appropriate mirrored port and correlate timestamps.

Explanation

Correct Answer

A:

IP reachability alone does not establish BGP session negotiation. The engineer should check TCP port 179, source address and remote AS settings.

Incorrect Answers

B:

Competing transmitters on the same channel can drive delay and retries. It is not a direct remedy for the condition described.

C:

Layer 1 failure must be resolved before Layer 3 diagnosis. It is not a direct remedy for the condition described.

D:

Packet capture distinguishes transport retransmissions, resets and filtering. It is not a direct remedy for the condition described.

Question 78

After completing the planned work for this situation—a voice workload shows jitter bursts when egress utilization is near 100 percent—how should success be checked?

  1. Compare RTT, retransmissions and goodput on the live path.
  2. Compare RTP jitter with queue occupancy after tuning.
  3. Measure BSS transition and user-packet interruption times.
  4. Compare throughput and drop profiles before and after rate control.

Explanation

Correct Answer

B:

Full link saturation exposes serialization and queuing delays. Compare RTP jitter with queue occupancy after tuning directly tests the desired behavior.

Incorrect Answers

A:

Wide-area throughput is constrained by latency, loss and congestion. That observation tests a different condition, not the required result.

C:

Roaming performance depends on scan, authentication and mobility handling. That observation tests a different condition, not the required result.

D:

Shaping buffers over-rate traffic while policing can drop or remark it. That observation tests a different condition, not the required result.

Question 79

The campus team is closing a service ticket about this condition: A switch should relay DHCP for clients in a remote server subnet. Which validation step is most relevant?

  1. Compare neighbor interface MTUs and ExStart logs.
  2. Inspect RIB/FIB and reason for next-hop exclusion.
  3. Capture relay source and server replies for the client VLAN.
  4. Compare route, FIB and session egress for new versus old traffic.

Explanation

Correct Answer

C:

DHCP broadcasts require relay when the server is beyond a router. Capture relay source and server replies for the client VLAN directly tests the desired behavior.

Incorrect Answers

A:

Database description exchange can fail when MTU expectations differ. That observation tests a different condition, not the required result.

B:

Multiple configured next hops do not guarantee equal-cost installation. That observation tests a different condition, not the required result.

D:

Control-plane route updates and existing session datapaths can differ. That observation tests a different condition, not the required result.

Question 80

The campus team is closing a service ticket about this condition: A trunk carries several departments over one physical Ethernet connection. Which validation step is most relevant?

  1. Capture frames or inspect trunk membership to verify the expected VLAN IDs.
  2. Capture both EAPOL and RADIUS traffic on the appropriate interfaces.
  3. Capture the association exchange and confirm the client reaches associated state.
  4. Inspect interface duplex and error counters while loading the link.

Explanation

Correct Answer

A:

VLAN tags identify individual logical Layer 2 networks on a shared trunk. Capture frames or inspect trunk membership to verify the expected VLAN IDs directly tests the desired behavior.

Incorrect Answers

B:

EAPOL is used at the endpoint edge while the authenticator relays authentication over RADIUS. That observation tests a different condition, not the required result.

C:

Wi-Fi management frames establish the radio connection before IP-layer onboarding. That observation tests a different condition, not the required result.

D:

Modern switched full-duplex Ethernet does not use half-duplex collision detection. That observation tests a different condition, not the required result.


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