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Exam Code: HPE7-A08

Exam Name HPE Network Switching Professional

Certification Provider: HP

Corresponding Certification: HPE Aruba Networking Certified Professional - Switching

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HP HPE7-A08 Practice Test 18

Question 170

At the Cedarport regional hospital, two directly connected distribution switches never form OSPF adjacency after an area renumbering. What risk should the team identify as the primary issue?

  1. Layer 2 VLAN existence does not by itself supply a routed gateway interface
  2. Area or hello mismatch on adjacent interfaces prevents normal OSPF peering
  3. A device that is merely inventoried may not inherit the required group configuration or site policy
  4. Without learned receiver groups a Layer 2 multicast stream may be flooded to unrelated ports

Explanation

Correct Answer

B:

This identifies the root issue: area or hello mismatch on adjacent interfaces prevents normal OSPF peering. At the Cedarport regional hospital, the team should therefore align OSPF area and adjacency parameters on the intended interfaces then validate neighbors.

Incorrect Answers

A:

The option states: Layer 2 VLAN existence does not by itself supply a routed gateway interface. The source describes its associated mechanism as: layer 2 VLAN existence does not by itself supply a routed gateway interface; a passing acceptance check would show that a test host reaches the SVI address and permitted off subnet destinations. By contrast, the current situation is governed by: area or hello mismatch on adjacent interfaces prevents normal OSPF peering. Choosing this alternative would leave the question’s specific root-cause explanation unresolved.

C:

a device that is merely inventoried may not inherit the required group configuration or site policy, rather than merely a monitoring or presentation issue. The offered alternative applies that mechanism: A device that is merely inventoried may not inherit the required group configuration or site policy. The reported facts point to a different controlling condition: area or hello mismatch on adjacent interfaces prevents normal OSPF peering. The alternative does not directly settle the required root-cause explanation.

D:

Without learned receiver groups a Layer 2 multicast stream may be flooded to unrelated ports. Its technical scope is explained by: without learned receiver groups a Layer 2 multicast stream may be flooded to unrelated ports, rather than merely a monitoring or presentation issue. In this question, the decisive issue is: area or hello mismatch on adjacent interfaces prevents normal OSPF peering. That is why the offered option is not the most direct root-cause explanation.

Question 171

At the Cedarport regional hospital, two directly connected distribution switches never form OSPF adjacency after an area renumbering. What is the strongest acceptance test for this change?

  1. Neighbor state reaches Full and expected link state routes are installed
  2. A test client receives the correct scope address and relay logs show the exchange
  3. The controlled test host reaches its permitted peer through the end-to-end VLAN path
  4. Both uplinks carry the approved aggregate and the path recovers after a peer failure

Explanation

Correct Answer

A:

Because area or hello mismatch on adjacent interfaces prevents normal OSPF peering, the required evidence must show that neighbor state reaches Full and expected link state routes are installed. A healthy endpoint status alone is insufficient. This result addresses the stated challenge at the Cedarport regional hospital.

Incorrect Answers

B:

layer 3 separation blocks local broadcast discovery without an approved relay path, the required evidence must show that a test client receives the correct scope address and relay logs show the exchange. The offered alternative applies that mechanism: A test client receives the correct scope address and relay logs show the exchange. The reported facts point to a different controlling condition: area or hello mismatch on adjacent interfaces prevents normal OSPF peering, the required evidence must show that neighbor state reaches Full and expected link state routes are installed. The alternative does not directly settle the required acceptance evidence.

C:

The controlled test host reaches its permitted peer through the end-to-end VLAN path. Its technical scope is explained by: an established Ethernet link does not imply all tagged VLANs are carried across it, the required evidence must show that the controlled test host reaches its permitted peer through the end-to-end VLAN path. In this question, the decisive issue is: area or hello mismatch on adjacent interfaces prevents normal OSPF peering, the required evidence must show that neighbor state reaches Full and expected link state routes are installed. That is why the offered option is not the most direct acceptance evidence.

D:

The option states: Both uplinks carry the approved aggregate and the path recovers after a peer failure. The source describes its associated mechanism as: a mismatched multi-chassis aggregation can create blocked members or forwarding loops. By contrast, the current situation is governed by: area or hello mismatch on adjacent interfaces prevents normal OSPF peering, the required evidence must show that neighbor state reaches Full and expected link state routes are installed. Choosing this alternative would leave the question’s specific acceptance evidence unresolved.

Question 172

At the Cedarport regional hospital, two directly connected distribution switches never form OSPF adjacency after an area renumbering. Which setting or practice should be reviewed in future?

  1. Alert on OSPF neighbor down events and compare interface templates
  2. Audit next-hop reachability when WAN addresses change
  3. Audit role policy mappings and authentication enforcement after directory changes
  4. Audit queue drops and utilization during peak periods

Explanation

Correct Answer

A:

After implementation, the team should alert on OSPF neighbor down events and compare interface templates as the appropriate recurring safeguard against the identified issue. This result addresses the stated challenge at the Cedarport regional hospital.

Incorrect Answers

B:

Audit next-hop reachability when WAN addresses change. Its technical scope is explained by: a static next hop that cannot be resolved prevents the default route from forwarding traffic. In this question, the decisive issue is: area or hello mismatch on adjacent interfaces prevents normal OSPF peering, the required evidence must show that neighbor state reaches Full and expected link state routes are installed. That is why the offered option is not the most direct recurrence control.

C:

The option states: Audit role policy mappings and authentication enforcement after directory changes. The source describes its associated mechanism as: port-only VLAN membership does not express changing identity-driven access requirements reliably, rather than merely a monitoring or presentation issue. By contrast, the current situation is governed by: area or hello mismatch on adjacent interfaces prevents normal OSPF peering, the required evidence must show that neighbor state reaches Full and expected link state routes are installed. Choosing this alternative would leave the question’s specific recurrence control unresolved.

D:

Audit queue drops and utilization during peak periods. This option is based on the following distinct technical behavior: a single congested best-effort queue does not protect latency-sensitive voice packets. The present question instead depends on this mechanism: area or hello mismatch on adjacent interfaces prevents normal OSPF peering, the required evidence must show that neighbor state reaches Full and expected link state routes are installed. That difference matters for the requested recurrence control.

Question 173

At the Pinecrest technical college, a routed campus takes the congested backup path because the preferred link has an unexpectedly high OSPF cost. Which corrective action best meets the requirement?

  1. Align OSPF area and adjacency parameters on the intended interfaces then validate neighbors
  2. Adjust approved OSPF interface costs to reflect the intended primary and failover topology
  3. Align supported VSX active gateway configuration addresses and consistency on both peers
  4. Match supported transceivers fiber medium and optical parameters at both ends and verify link budget

Explanation

Correct Answer

B:

The primary failure mode is that OSPF path selection follows its calculated metrics rather than business labels on ports. The proposed action directly fixes it by requiring the team to adjust approved OSPF interface costs to reflect the intended primary and failover topology; afterward, verify that a route lookup prefers the approved path and switches after a controlled failure. This result addresses the stated challenge at the Pinecrest technical college.

Incorrect Answers

A:

Align OSPF area and adjacency parameters on the intended interfaces then validate neighbors. Its technical scope is explained by: area or hello mismatch on adjacent interfaces prevents normal OSPF peering. In this question, the decisive issue is: OSPF path selection follows its calculated metrics rather than business labels on ports. That is why the offered option is not the most direct implementation.

C:

Align supported VSX active gateway configuration addresses and consistency on both peers. This option is based on the following distinct technical behavior: dual switch gateway services require coordinated configuration to prevent inconsistent L3 forwarding; a passing acceptance check would show that a connected host preserves gateway reachability after either peer uplink fails. The present question instead depends on this mechanism: OSPF path selection follows its calculated metrics rather than business labels on ports. That difference matters for the requested implementation.

D:

mismatched optic characteristics prevent a valid light path despite correct switch configuration; a passing acceptance check would show that optical diagnostics show receive levels within specification and the link establishes. The offered alternative applies that mechanism: Match supported transceivers fiber medium and optical parameters at both ends and verify link budget. The reported facts point to a different controlling condition: OSPF path selection follows its calculated metrics rather than business labels on ports. The alternative does not directly settle the required implementation.

Question 174

At the Pinecrest technical college, a routed campus takes the congested backup path because the preferred link has an unexpectedly high OSPF cost. Which underlying issue most directly explains this situation?

  1. A static next hop that cannot be resolved prevents the default route from forwarding traffic
  2. OSPF path selection follows its calculated metrics rather than business labels on ports
  3. An incorrect access VLAN places untagged endpoint frames into the wrong broadcast domain
  4. A command entered outside the required CLI context may fail or affect a different object

Explanation

Correct Answer

B:

The architectural weakness is that OSPF path selection follows its calculated metrics rather than business labels on ports. It can be addressed through the controlled change to adjust approved OSPF interface costs to reflect the intended primary and failover topology. This result addresses the stated challenge at the Pinecrest technical college.

Incorrect Answers

A:

The option states: A static next hop that cannot be resolved prevents the default route from forwarding traffic. By contrast, the current situation is governed by: OSPF path selection follows its calculated metrics rather than business labels on ports. Choosing this alternative would leave the question’s specific root-cause explanation unresolved.

C:

The offered alternative states: An incorrect access VLAN places untagged endpoint frames into the wrong broadcast domain. The reported facts point to a different controlling condition: OSPF path selection follows its calculated metrics rather than business labels on ports. The alternative does not directly settle the required root-cause explanation.

D:

A command entered outside the required CLI context may fail or affect a different object. Its technical scope is explained by: a command entered outside the required CLI context may fail or affect a different object, rather than merely a monitoring or presentation issue. In this question, the decisive issue is: OSPF path selection follows its calculated metrics rather than business labels on ports. That is why the offered option is not the most direct root-cause explanation.

Question 175

At the Pinecrest technical college, a routed campus takes the congested backup path because the preferred link has an unexpectedly high OSPF cost. What evidence would justify considering this concern addressed?

  1. The contractor test reaches its approved exit but cannot route to restricted enterprise subnets
  2. A route lookup prefers the approved path and switches after a controlled failure
  3. A scheduled synchronization preserves the approved setting and records its source
  4. A known user receives the approved role while an unauthorized client is denied or isolated

Explanation

Correct Answer

B:

The intended correction is to adjust approved OSPF interface costs to reflect the intended primary and failover topology. The decisive verification is that a route lookup prefers the approved path and switches after a controlled failure, rather than only confirming configuration was saved. This result addresses the stated challenge at the Pinecrest technical college.

Incorrect Answers

A:

The contractor test reaches its approved exit but cannot route to restricted enterprise subnets. This option is based on the following distinct technical behavior: incorrect VRF assignment defeats the intended separation of independent routing contexts. The present question instead depends on this mechanism: OSPF path selection follows its calculated metrics rather than business labels on ports. That difference matters for the requested acceptance evidence.

C:

A scheduled synchronization preserves the approved setting and records its source. Its technical scope is explained by: group managed configurations can supersede direct local changes when ownership is not coordinated. In this question, the decisive issue is: OSPF path selection follows its calculated metrics rather than business labels on ports. That is why the offered option is not the most direct acceptance evidence.

D:

The option states: A known user receives the approved role while an unauthorized client is denied or isolated. The source describes its associated mechanism as: open access ports cannot distinguish authorized identities before granting network privileges. By contrast, the current situation is governed by: OSPF path selection follows its calculated metrics rather than business labels on ports. Choosing this alternative would leave the question’s specific acceptance evidence unresolved.

Question 176

At the Pinecrest technical college, a routed campus takes the congested backup path because the preferred link has an unexpectedly high OSPF cost. How should the organization sustain the improvement?

  1. Monitor SVI operational state and gateway address ownership
  2. Review cost design after link-speed upgrades
  3. Audit VSX LAG identifiers peer consistency and actor status
  4. Validate trunk tagging assumptions during interface changes

Explanation

Correct Answer

B:

For the Pinecrest technical college, this maintenance action preserves the fix: review cost design after link-speed upgrades. It should be revisited as the workload evolves.

Incorrect Answers

A:

layer 2 VLAN existence does not by itself supply a routed gateway interface; a passing acceptance check would show that a test host reaches the SVI address and permitted off subnet destinations. The offered alternative applies that mechanism: Monitor SVI operational state and gateway address ownership. The reported facts point to a different controlling condition: OSPF path selection follows its calculated metrics rather than business labels on ports. The alternative does not directly settle the required recurrence control.

C:

The option states: Audit VSX LAG identifiers peer consistency and actor status. The source describes its associated mechanism as: a mismatched multi-chassis aggregation can create blocked members or forwarding loops. By contrast, the current situation is governed by: OSPF path selection follows its calculated metrics rather than business labels on ports. Choosing this alternative would leave the question’s specific recurrence control unresolved.

D:

Validate trunk tagging assumptions during interface changes. This option is based on the following distinct technical behavior: different untagged VLAN handling can leak or misdeliver management and user frames. The present question instead depends on this mechanism: OSPF path selection follows its calculated metrics rather than business labels on ports. That difference matters for the requested recurrence control.

Question 177

At the Dartwood public agency, an aggregation edge fails to establish BGP because one neighbor configuration has the wrong remote autonomous system. Which approach best resolves the described issue?

  1. Correct the approved peer address remote AS and source connectivity then inspect session states
  2. Install a correct default route via the validated reachable next hop and routing context
  3. Match supported transceivers fiber medium and optical parameters at both ends and verify link budget
  4. Configure the supported VSX multi-chassis LAG coherently across both peers and the downstream device

Explanation

Correct Answer

A:

The reported facts support this change rather than a general platform replacement. The team should correct the approved peer address remote AS and source connectivity then inspect session states because BGP neighbors require compatible AS relationships and reachable transport before exchanging routes. A suitable test confirms that the BGP session establishes and authorized prefixes appear in the routing policy output. This result addresses the stated challenge at the Dartwood public agency.

Incorrect Answers

B:

The option states: Install a correct default route via the validated reachable next hop and routing context. The source describes its associated mechanism as: a static next hop that cannot be resolved prevents the default route from forwarding traffic. By contrast, the current situation is governed by: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes. Choosing this alternative would leave the question’s specific root-cause explanation unresolved.

C:

Match supported transceivers fiber medium and optical parameters at both ends and verify link budget. This option is based on the following distinct technical behavior: mismatched optic characteristics prevent a valid light path despite correct switch configuration; a passing acceptance check would show that optical diagnostics show receive levels within specification and the link establishes. The present question instead depends on this mechanism: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes. That difference matters for the requested root-cause explanation.

D:

a mismatched multi-chassis aggregation can create blocked members or forwarding loops; a passing acceptance check would show that both uplinks carry the approved aggregate and the path recovers after a peer failure. The offered alternative applies that mechanism: Configure the supported VSX multi-chassis LAG coherently across both peers and the downstream device. The reported facts point to a different controlling condition: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes. The alternative does not directly settle the required root-cause explanation.

Question 178

At the Dartwood public agency, an aggregation edge fails to establish BGP because one neighbor configuration has the wrong remote autonomous system. Which explanation best accounts for the concern?

  1. Layer 3 separation blocks local broadcast discovery without an approved relay path
  2. A link aggregation group requires consistent partner settings before members collect and distribute traffic
  3. BGP neighbors require compatible AS relationships and reachable transport before exchanging routes
  4. Accepting arbitrary endpoint QoS markings can defeat the intended class priority scheme

Explanation

Correct Answer

C:

The situation shows that BGP neighbors require compatible AS relationships and reachable transport before exchanging routes, rather than merely a monitoring or presentation issue. Remediation is to correct the approved peer address remote AS and source connectivity then inspect session states. This result addresses the stated challenge at the Dartwood public agency.

Incorrect Answers

A:

The option states: Layer 3 separation blocks local broadcast discovery without an approved relay path. The source describes its associated mechanism as: layer 3 separation blocks local broadcast discovery without an approved relay path, the required evidence must show that a test client receives the correct scope address and relay logs show the exchange. By contrast, the current situation is governed by: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes, rather than merely a monitoring or presentation issue. Choosing this alternative would leave the question’s specific root-cause explanation unresolved.

B:

A link aggregation group requires consistent partner settings before members collect and distribute traffic. This option is based on the following distinct technical behavior: it requires the team to monitor LACP actor partner status after port changes. The present question instead depends on this mechanism: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes, rather than merely a monitoring or presentation issue. That difference matters for the requested root-cause explanation.

D:

Accepting arbitrary endpoint QoS markings can defeat the intended class priority scheme. The reported problem is governed by this different mechanism: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes, rather than merely a monitoring or presentation issue. The offered choice would not address that particular root-cause explanation directly.

Question 179

At the Dartwood public agency, an aggregation edge fails to establish BGP because one neighbor configuration has the wrong remote autonomous system. Which test result best shows the requirement is met?

  1. The contractor test reaches its approved exit but cannot route to restricted enterprise subnets
  2. An authorized SSH login succeeds while an unauthorized plaintext management attempt fails
  3. All intended breakout links negotiate supported speed and pass connectivity tests
  4. The BGP session establishes and authorized prefixes appear in the routing policy output

Explanation

Correct Answer

D:

The team can confirm the fix by showing that the BGP session establishes and authorized prefixes appear in the routing policy output. This aligns with the corrective design to correct the approved peer address remote AS and source connectivity then inspect session states. This result addresses the stated challenge at the Dartwood public agency.

Incorrect Answers

A:

The contractor test reaches its approved exit but cannot route to restricted enterprise subnets. This option is based on the following distinct technical behavior: incorrect VRF assignment defeats the intended separation of independent routing contexts. The present question instead depends on this mechanism: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes, rather than merely a monitoring or presentation issue. That difference matters for the requested acceptance evidence.

B:

unencrypted or broadly reachable management exposes network configuration and credentials, the required evidence must show that an authorized SSH login succeeds while an unauthorized plaintext management attempt fails. The offered alternative applies that mechanism: An authorized SSH login succeeds while an unauthorized plaintext management attempt fails. The reported facts point to a different controlling condition: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes, rather than merely a monitoring or presentation issue. The alternative does not directly settle the required acceptance evidence.

C:

All intended breakout links negotiate supported speed and pass connectivity tests. Its technical scope is explained by: a physical breakout requires matched hardware and operating mode rather than only an interface name, the required evidence must show that all intended breakout links negotiate supported speed and pass connectivity tests. In this question, the decisive issue is: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes, rather than merely a monitoring or presentation issue. That is why the offered option is not the most direct acceptance evidence.

Question 180

At the Dartwood public agency, an aggregation edge fails to establish BGP because one neighbor configuration has the wrong remote autonomous system. Which ongoing control best prevents this issue from recurring?

  1. Review cost design after link-speed upgrades
  2. Validate peer parameters before routing policy deployments
  3. Review rate thresholds against measured normal guest demand
  4. Review power utilization and supply redundancy as endpoints grow

Explanation

Correct Answer

B:

The needed prevention is to validate peer parameters before routing policy deployments. It directly sustains the original change to correct the approved peer address remote AS and source connectivity then inspect session states. This result addresses the stated challenge at the Dartwood public agency.

Incorrect Answers

A:

OSPF path selection follows its calculated metrics rather than business labels on ports. The offered alternative applies that mechanism: Review cost design after link-speed upgrades. The reported facts point to a different controlling condition: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes, rather than merely a monitoring or presentation issue. The alternative does not directly settle the required recurrence control.

C:

The option states: Review rate thresholds against measured normal guest demand. The source describes its associated mechanism as: bursting guest traffic can consume resources needed for contracted business services. By contrast, the current situation is governed by: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes, rather than merely a monitoring or presentation issue. Choosing this alternative would leave the question’s specific recurrence control unresolved.

D:

Review power utilization and supply redundancy as endpoints grow. This option is based on the following distinct technical behavior: total chassis PoE consumption can exceed available power when endpoints start together. The present question instead depends on this mechanism: BGP neighbors require compatible AS relationships and reachable transport before exchanging routes, rather than merely a monitoring or presentation issue. That difference matters for the requested recurrence control.