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HP HPE7-A01 Practice Test 13

Question 120

A VSX pair retains user forwarding but peer health alarms recur after a new ISL optic is installed. What precaution is most important before the change is expanded?

  1. Capacity-test the combined peak workload and define failure-mode limits
  2. Keep diverse stack links and validate surviving PoE and uplink capacity
  3. Replace an unsupported optic in a maintenance window and verify a safe recovery sequence
  4. Keep a labeled spare and verified configuration backup before swapping hardware

Explanation

Correct Answer

C:

A partially degraded peer pair can behave unpredictably under another failure. The timeline connects physical impairment to distributed control state.

Incorrect Answers

A:

Shared resilience must be sized for the largest expected simultaneous demand. In this situation, a partially degraded peer pair can behave unpredictably under another failure.

B:

A member failure may remove both power and forwarding ports. It would not resolve the documented symptom; a partially degraded peer pair can behave unpredictably under another failure.

D:

A documented spare path shortens user downtime. By contrast, a partially degraded peer pair can behave unpredictably under another failure.

Question 121

A routed campus core runs VSX active gateway but clients experience intermittent default-gateway loss. Which configuration decision most directly resolves the situation?

  1. Review the shared active-gateway virtual IP/MAC and SVI configuration on both peers
  2. Enable appropriate configuration synchronization or maintain reviewed matching objects
  3. Review stack election priorities, software compatibility and synchronized configuration
  4. Design the supported ring or routed redundancy mechanism and its convergence behavior

Explanation

Correct Answer

A:

Consistent gateway parameters let either peer forward for the subnet. A reachable VIP on one node does not prove resilient first-hop operation.

Incorrect Answers

B:

Both peers must support the same intended multi-chassis forwarding services. By contrast, consistent gateway parameters let either peer forward for the subnet.

C:

Stable leadership and matching software reduce inconsistent stack state. It would not resolve the documented symptom; consistent gateway parameters let either peer forward for the subnet.

D:

Physical rings require a control plane that prevents loops in normal service. The relevant technical distinction is that consistent gateway parameters let either peer forward for the subnet.

Question 122

A routed campus core runs VSX active gateway but clients experience intermittent default-gateway loss. Which check most directly demonstrates the desired network behavior?

  1. Inspect stack uplink configuration and per-member LACP or STP counters
  2. Confirm member ID, software and expected port profiles after it rejoins
  3. Inspect stack membership, conductor role and port availability during member removal
  4. Check ARP/neighbor resolution and client gateway traffic on each peer separately

Explanation

Correct Answer

D:

A reachable VIP on one node does not prove resilient first-hop operation. Consistent gateway parameters let either peer forward for the subnet.

Incorrect Answers

A:

The actual state identifies a blocked path versus a fault. The relevant technical distinction is that a reachable VIP on one node does not prove resilient first-hop operation.

B:

Hardware presence alone does not confirm the logical port numbering. Here, however, a reachable VIP on one node does not prove resilient first-hop operation.

C:

A healthy stack must maintain the intended surviving interfaces. By contrast, a reachable VIP on one node does not prove resilient first-hop operation.

Question 123

A routed campus core runs VSX active gateway but clients experience intermittent default-gateway loss. Which assumption would be most misleading when investigating this situation?

  1. Treat a physically closed Ethernet ring as automatically loop-free without STP or equivalent protection
  2. Assign two unrelated virtual MACs to what is supposed to be one VSX active gateway
  3. Assume two access VLANs alone provide separate routing tables within one default VRF
  4. Assume VSX high availability guarantees zero application loss under every upgrade condition

Explanation

Correct Answer

B:

Inconsistent gateway identity may cause client neighbor changes and outages. Consistent gateway parameters let either peer forward for the subnet.

Incorrect Answers

A:

Redundant physical paths can cause persistent flooding. In this situation, inconsistent gateway identity may cause client neighbor changes and outages.

C:

VLAN segmentation need not separate L3 forwarding contexts. The relevant technical distinction is that inconsistent gateway identity may cause client neighbor changes and outages.

D:

Network services can depend on external routing and client behavior. Here, however, inconsistent gateway identity may cause client neighbor changes and outages.

Question 124

A routed campus core runs VSX active gateway but clients experience intermittent default-gateway loss. Which safeguard best reduces the deployment risk in this case?

  1. Stage new members with matched firmware and a backup of the stack configuration
  2. Keep diverse stack links and validate surviving PoE and uplink capacity
  3. Test both peer failures and restore paths while recording ARP convergence
  4. Keep a labeled spare and verified configuration backup before swapping hardware

Explanation

Correct Answer

C:

First-hop availability depends on neighboring hosts as well as the switches. A reachable VIP on one node does not prove resilient first-hop operation.

Incorrect Answers

A:

Controlled joining lowers the risk of disrupting existing ports. It would not resolve the documented symptom; first-hop availability depends on neighboring hosts as well as the switches.

B:

A member failure may remove both power and forwarding ports. Here, however, first-hop availability depends on neighboring hosts as well as the switches.

D:

A documented spare path shortens user downtime. In this situation, first-hop availability depends on neighboring hosts as well as the switches.

Question 125

A dormitory access stack loses power to one member and several APs suddenly disconnect. What is the most appropriate first technical change?

  1. Build a supported VSF stack with correct stacking links, roles and firmware alignment
  2. Design the supported ring or routed redundancy mechanism and its convergence behavior
  3. Verify PoE distribution and surviving port locations in the VSF design
  4. Design separate power domains and redundant routed campus links rather than relying only on one chassis

Explanation

Correct Answer

C:

Logical redundancy cannot power devices physically attached to a failed chassis. Resilient switching requires enough live physical interfaces.

Incorrect Answers

A:

VSF creates a logical switch from supported members for simpler access-layer operation. By contrast, logical redundancy cannot power devices physically attached to a failed chassis.

B:

Physical rings require a control plane that prevents loops in normal service. In this situation, logical redundancy cannot power devices physically attached to a failed chassis.

D:

Geographic power isolation must accompany logical path redundancy. It would not resolve the documented symptom; logical redundancy cannot power devices physically attached to a failed chassis.

Question 126

A dormitory access stack loses power to one member and several APs suddenly disconnect. Which observation would best verify that the intended behavior is working?

  1. Check AP uplink placement and power draw before and after member loss
  2. Trace a client flow and inspect both peers' next-hop and MAC tables
  3. Inspect keepalive reachability, ISL state and event logs on both nodes
  4. Compare VLAN, LAG and active-gateway parameters on each peer and test flows

Explanation

Correct Answer

A:

Resilient switching requires enough live physical interfaces. Logical redundancy cannot power devices physically attached to a failed chassis.

Incorrect Answers

B:

A full-path inspection exposes unexpected inter-switch forwarding. The relevant technical distinction is that resilient switching requires enough live physical interfaces.

C:

Together they distinguish partial monitoring failure from full isolation. By contrast, resilient switching requires enough live physical interfaces.

D:

Divergent peer settings may appear only on one hashed path. It would not resolve the documented symptom; resilient switching requires enough live physical interfaces.

Question 127

A dormitory access stack loses power to one member and several APs suddenly disconnect. Which TWO actions together implement the required change and verify that it works? Choose TWO.

  1. Verify PoE distribution and surviving port locations in the VSF design
  2. Check AP uplink placement and power draw before and after member loss
  3. Test a primary uplink failure and check that the intended backup becomes active
  4. Design the supported ring or routed redundancy mechanism and its convergence behavior
  5. Build a supported VSF stack with correct stacking links, roles and firmware alignment

Explanation

Correct Answers

A:

Logical redundancy cannot power devices physically attached to a failed chassis. Resilient switching requires enough live physical interfaces.

B:

Resilient switching requires enough live physical interfaces. Logical redundancy cannot power devices physically attached to a failed chassis.

Incorrect Answers

C:

A blocked standby path is only useful if it recovers service. The relevant technical distinction is that power-domain diversity limits a single member's impact.

D:

Physical rings require a control plane that prevents loops in normal service. Here, however, logical redundancy cannot power devices physically attached to a failed chassis.

E:

VSF creates a logical switch from supported members for simpler access-layer operation. By contrast, logical redundancy cannot power devices physically attached to a failed chassis.

Question 128

A dormitory access stack loses power to one member and several APs suddenly disconnect. What should be included in the rollout plan to limit a foreseeable failure?

  1. Capacity-test the combined peak workload and define failure-mode limits
  2. Replace an unsupported optic in a maintenance window and verify a safe recovery sequence
  3. Spread critical APs across members or provide alternate coverage where feasible
  4. Validate the topology against the supported platform guide before modifying failover roles

Explanation

Correct Answer

C:

Power-domain diversity limits a single member's impact. Resilient switching requires enough live physical interfaces.

Incorrect Answers

A:

Shared resilience must be sized for the largest expected simultaneous demand. In this situation, power-domain diversity limits a single member's impact.

B:

A partially degraded peer pair can behave unpredictably under another failure. Here, however, power-domain diversity limits a single member's impact.

D:

Ad hoc changes to both peers can worsen an existing loop. The relevant technical distinction is that power-domain diversity limits a single member's impact.

Question 129

A campus distribution pair should survive one uplink without Layer 2 loops during recovery. What should the network engineer do to address this requirement?

  1. Use LACP or an appropriately configured spanning-tree topology for parallel paths
  2. Deploy a supported VSX pair with multi-chassis LAG and compatible peer coordination
  3. Plan shared-resource limits and QoS allocation across the virtualized infrastructure
  4. Design the supported ring or routed redundancy mechanism and its convergence behavior

Explanation

Correct Answer

A:

Redundancy needs deterministic forwarding and loop prevention. These states reveal whether the physical backup is correctly controlled.

Incorrect Answers

B:

VSX can present resilient LAG connectivity while preserving independent control planes. It would not resolve the documented symptom; redundancy needs deterministic forwarding and loop prevention.

C:

Separate logical domains still compete for physical ports and bandwidth. In this situation, redundancy needs deterministic forwarding and loop prevention.

D:

Physical rings require a control plane that prevents loops in normal service. Here, however, redundancy needs deterministic forwarding and loop prevention.

Question 130

A campus distribution pair should survive one uplink without Layer 2 loops during recovery. 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. Test a planned building-level power failure and verify alternate gateway and path availability
  4. Inspect active bundle members and blocked/forwarding STP states while changing links

Explanation

Correct Answer

D:

These states reveal whether the physical backup is correctly controlled. Redundancy needs deterministic forwarding and loop prevention.

Incorrect Answers

A:

A new conductor should not silently lose edge security settings. It would not resolve the documented symptom; these states reveal whether the physical backup is correctly controlled.

B:

Hardware presence alone does not confirm the logical port numbering. In this situation, these states reveal whether the physical backup is correctly controlled.

C:

Device-level failover cannot prove building-level recovery. By contrast, these states reveal whether the physical backup is correctly controlled.

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

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