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HP HPE7-A01 Practice Test 18

Question 170

A switch pair remains up but a failed keepalive link makes VSX peer status uncertain. Which check most directly demonstrates the desired network behavior?

  1. Check AP uplink placement and power draw before and after member loss
  2. Inspect stack membership, conductor role and port availability during member removal
  3. Test a planned building-level power failure and verify alternate gateway and path availability
  4. Inspect keepalive reachability, ISL state and event logs on both nodes

Explanation

Correct Answer

D:

Together they distinguish partial monitoring failure from full isolation. Peer liveness detection protects against conflicting control-plane behavior.

Incorrect Answers

A:

Resilient switching requires enough live physical interfaces. It would not resolve the documented symptom; together they distinguish partial monitoring failure from full isolation.

B:

A healthy stack must maintain the intended surviving interfaces. By contrast, together they distinguish partial monitoring failure from full isolation.

C:

Device-level failover cannot prove building-level recovery. In this situation, together they distinguish partial monitoring failure from full isolation.

Question 171

A switch pair remains up but a failed keepalive link makes VSX peer status uncertain. Which assumption would be most misleading when investigating this situation?

  1. Disable all peer-liveness checks merely to clear an operational alarm
  2. Assume VSX high availability guarantees zero application loss under every upgrade condition
  3. Assume a common VSF control plane supplies power to ports on a failed unit
  4. Assume two access VLANs alone provide separate routing tables within one default VRF

Explanation

Correct Answer

A:

Suppressing detection can increase split-brain risk. Peer liveness detection protects against conflicting control-plane behavior.

Incorrect Answers

B:

Network services can depend on external routing and client behavior. The relevant technical distinction is that suppressing detection can increase split-brain risk.

C:

Stacking virtualizes management, not the failed hardware's electrical outputs. By contrast, suppressing detection can increase split-brain risk.

D:

VLAN segmentation need not separate L3 forwarding contexts. It would not resolve the documented symptom; suppressing detection can increase split-brain risk.

Question 172

A switch pair remains up but a failed keepalive link makes VSX peer status uncertain. Which safeguard best reduces the deployment risk in this case?

  1. Test a primary uplink failure and check that the intended backup becomes active
  2. Restore an isolated keepalive path and rehearse partial-link failures in a lab
  3. Keep diverse stack links and validate surviving PoE and uplink capacity
  4. Validate the topology against the supported platform guide before modifying failover roles

Explanation

Correct Answer

B:

Control-plane resilience requires tested failure combinations. Together they distinguish partial monitoring failure from full isolation.

Incorrect Answers

A:

A blocked standby path is only useful if it recovers service. The relevant technical distinction is that control-plane resilience requires tested failure combinations.

C:

A member failure may remove both power and forwarding ports. Here, however, control-plane resilience requires tested failure combinations.

D:

Ad hoc changes to both peers can worsen an existing loop. By contrast, control-plane resilience requires tested failure combinations.

Question 173

A multi-member VSF deployment needs a predictable replacement procedure for a failed access switch. What is the most appropriate first technical change?

  1. Design the supported ring or routed redundancy mechanism and its convergence behavior
  2. Diagnose keepalive path and documented split-brain protection alongside ISL state
  3. Follow the supported member replacement and stack-identity restoration steps
  4. Review stack election priorities, software compatibility and synchronized configuration

Explanation

Correct Answer

C:

A correctly provisioned replacement rejoins without overwriting the surviving stack. Hardware presence alone does not confirm the logical port numbering.

Incorrect Answers

A:

Physical rings require a control plane that prevents loops in normal service. In this situation, a correctly provisioned replacement rejoins without overwriting the surviving stack.

B:

Peer liveness detection protects against conflicting control-plane behavior. Here, however, a correctly provisioned replacement rejoins without overwriting the surviving stack.

D:

Stable leadership and matching software reduce inconsistent stack state. The relevant technical distinction is that a correctly provisioned replacement rejoins without overwriting the surviving stack.

Question 174

A multi-member VSF deployment needs a predictable replacement procedure for a failed access switch. Which observation would best verify that the intended behavior is working?

  1. Confirm member ID, software and expected port profiles after it rejoins
  2. Check ARP/neighbor resolution and client gateway traffic on each peer separately
  3. Inspect active bundle members and blocked/forwarding STP states while changing links
  4. Compare VLAN, LAG and active-gateway parameters on each peer and test flows

Explanation

Correct Answer

A:

Hardware presence alone does not confirm the logical port numbering. A correctly provisioned replacement rejoins without overwriting the surviving stack.

Incorrect Answers

B:

A reachable VIP on one node does not prove resilient first-hop operation. It would not resolve the documented symptom; hardware presence alone does not confirm the logical port numbering.

C:

These states reveal whether the physical backup is correctly controlled. Here, however, hardware presence alone does not confirm the logical port numbering.

D:

Divergent peer settings may appear only on one hashed path. In this situation, hardware presence alone does not confirm the logical port numbering.

Question 175

A multi-member VSF deployment needs a predictable replacement procedure for a failed access switch. Which belief about the configuration should the team reject?

  1. Assume a healthy keepalive link replaces the data synchronization functions of the ISL
  2. Assume all VSX configuration is automatically synchronized without enabling supported sync settings
  3. Insert an unprepared device with duplicate member identity and assume ports map correctly
  4. Assume VSX high availability guarantees zero application loss under every upgrade condition

Explanation

Correct Answer

C:

Identity conflict can attach users to unintended configuration. A correctly provisioned replacement rejoins without overwriting the surviving stack.

Incorrect Answers

A:

Keepalive and ISL serve different purposes. In this situation, identity conflict can attach users to unintended configuration.

B:

Only configured sync categories are replicated. It would not resolve the documented symptom; identity conflict can attach users to unintended configuration.

D:

Network services can depend on external routing and client behavior. By contrast, identity conflict can attach users to unintended configuration.

Question 176

A multi-member VSF deployment needs a predictable replacement procedure for a failed access switch. What should be included in the rollout plan to limit a foreseeable failure?

  1. Replace an unsupported optic in a maintenance window and verify a safe recovery sequence
  2. Run a controlled single-peer maintenance with a rollback and stop criteria
  3. Keep a labeled spare and verified configuration backup before swapping hardware
  4. Test restricted traffic across VRFs and preserve management reachability

Explanation

Correct Answer

C:

A documented spare path shortens user downtime. Hardware presence alone does not confirm the logical port numbering.

Incorrect Answers

A:

A partially degraded peer pair can behave unpredictably under another failure. It would not resolve the documented symptom; a documented spare path shortens user downtime.

B:

A staged operation prevents simultaneous loss of both forwarding planes. The relevant technical distinction is that a documented spare path shortens user downtime.

D:

Incorrect leakage can undermine data segregation or strand support staff. By contrast, a documented spare path shortens user downtime.

Question 177

A pair of distribution switches is designed with active gateways but an uplink failure strands half of the access layer. What should the network engineer do to address this requirement?

  1. Use separate VRF routing instances with explicit authorized route leaking where needed
  2. Verify PoE distribution and surviving port locations in the VSF design
  3. Follow the supported member replacement and stack-identity restoration steps
  4. Validate both VSX multi-chassis LAG path diversity and upstream routed reachability

Explanation

Correct Answer

D:

First-hop availability must include both downstream and upstream network paths. A responsive local gateway can coexist with a broken WAN route.

Incorrect Answers

A:

Independent routing tables can segregate traffic on shared physical hardware. By contrast, first-hop availability must include both downstream and upstream network paths.

B:

Logical redundancy cannot power devices physically attached to a failed chassis. The relevant technical distinction is that first-hop availability must include both downstream and upstream network paths.

C:

A correctly provisioned replacement rejoins without overwriting the surviving stack. Here, however, first-hop availability must include both downstream and upstream network paths.

Question 178

A pair of distribution switches is designed with active gateways but an uplink failure strands half of the access layer. What should the team inspect to confirm the result?

  1. Compare effective configuration and member software before and after an election
  2. Confirm member ID, software and expected port profiles after it rejoins
  3. Compare per-tenant utilization and queue drops under concurrent load
  4. Simulate loss of each peer uplink and trace client sessions to off-subnet destinations

Explanation

Correct Answer

D:

A responsive local gateway can coexist with a broken WAN route. First-hop availability must include both downstream and upstream network paths.

Incorrect Answers

A:

A new conductor should not silently lose edge security settings. In this situation, a responsive local gateway can coexist with a broken WAN route.

B:

Hardware presence alone does not confirm the logical port numbering. Here, however, a responsive local gateway can coexist with a broken WAN route.

C:

Resource contention may not appear in a single-tenant test. The relevant technical distinction is that a responsive local gateway can coexist with a broken WAN route.

Question 179

A pair of distribution switches is designed with active gateways but an uplink failure strands half of the access layer. Which misconception is most likely to obstruct a correct fix?

  1. Conclude the design is resilient because clients still ping their VLAN gateway
  2. Disable all peer-liveness checks merely to clear an operational alarm
  3. Assume a common VSF control plane supplies power to ports on a failed unit
  4. Assume all newly inserted stack members inherit every configuration before joining completes

Explanation

Correct Answer

A:

Local gateway tests do not establish routed service beyond the pair. First-hop availability must include both downstream and upstream network paths.

Incorrect Answers

B:

Suppressing detection can increase split-brain risk. It would not resolve the documented symptom; local gateway tests do not establish routed service beyond the pair.

C:

Stacking virtualizes management, not the failed hardware's electrical outputs. Here, however, local gateway tests do not establish routed service beyond the pair.

D:

A joining device can be incompatible or in recovery state. In this situation, local gateway tests do not establish routed service beyond the pair.

Question 180

A pair of distribution switches is designed with active gateways but an uplink failure strands half of the access layer. What precaution is most important before the change is expanded?

  1. Run a controlled single-peer maintenance with a rollback and stop criteria
  2. Replace an unsupported optic in a maintenance window and verify a safe recovery sequence
  3. Document independent power, diverse fiber paths and recovery ownership
  4. Test upstream dependency failure independently of chassis failure

Explanation

Correct Answer

D:

Multiple failure modes expose missing redundancy paths. A responsive local gateway can coexist with a broken WAN route.

Incorrect Answers

A:

A staged operation prevents simultaneous loss of both forwarding planes. In this situation, multiple failure modes expose missing redundancy paths.

B:

A partially degraded peer pair can behave unpredictably under another failure. By contrast, multiple failure modes expose missing redundancy paths.

C:

True resilience removes shared physical points of failure. It would not resolve the documented symptom; multiple failure modes expose missing redundancy paths.

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

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