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Exam Code: HPE7-A01

Exam Name HPE Network Campus Access Professional

Certification Provider: HP

Corresponding Certification: HPE Aruba Networking Certified Professional - Campus Access

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HP HPE7-A01 Practice Test 64

Question 630

A switch receives BPDUs on an access edge configured with BPDU protection and disables the port. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Record expected bridge roots, blocked ports and convergence times.
  2. Record VSX and downstream LAG partner identities during deployment.
  3. Monitor both ISL and keepalive on separate failure domains.
  4. Keep BPDU protection enabled on ordinary user ports and document exceptions.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which the edge protection is responding to an unexpected bridge on a user-facing port. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a distribution ring loses a link and traffic remains blocked despite alternate Layer 2 connectivity. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when an edge switch's LACP bundle connects to two independent devices that are not configured as a VSX or equivalent multichassis domain. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a VSX pair loses its inter-switch link and the team assumes the remaining keepalive alone carries user traffic between peers. It would leave the present failure mode insufficiently addressed.

Question 631

A dual-homed server loses access after one LAG member fails because the remaining link has a mismatched VLAN allow list. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Standardize virtual gateway addresses in subnet design documentation.
  2. Include active-gateway consistency tests in peer configuration reviews.
  3. Audit logical-LAG VLAN state rather than independently drifting member configurations.
  4. Compare OSPF parameters whenever a redundant routed link is added.

Explanation

Correct Answer

C:

This is a continuing control for the failure mode in which the surviving member forwards only a subset of the VLANs required by the server. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a campus uses VRRP on an SVI but hosts keep targeting a physical gateway address rather than the shared virtual address. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when two VSX peers advertise a default gateway, but client MAC learning oscillates after the peers use inconsistent active-gateway MAC addresses. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a redundant OSPF network has two uplinks, but one interface's routing adjacency never forms because its area ID is wrong. It would leave the present failure mode insufficiently addressed.

Question 632

A site uses a single access-switch uplink to two cores with static routes and expects automatic gateway failover when the first core fails. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Record VSX and downstream LAG partner identities during deployment.
  2. Retest convergence after timer or software upgrades rather than assume defaults.
  3. Standardize virtual gateway addresses in subnet design documentation.
  4. Test gateway and routed uplink failure scenarios before production.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which a fixed next hop does not itself provide gateway availability after its core fails. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when an edge switch's LACP bundle connects to two independent devices that are not configured as a VSX or equivalent multichassis domain. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a VSX peer restarts for an upgrade and port-channel traffic drops because the downstream LACP timeout is too strict for the expected convergence. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a campus uses VRRP on an SVI but hosts keep targeting a physical gateway address rather than the shared virtual address. It would leave the present failure mode insufficiently addressed.

Question 633

A VSF stack has members connected in a line, so one intermember cable failure isolates the last unit. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Record expected bridge roots, blocked ports and convergence times.
  2. Verify stack cable topology during rack acceptance.
  3. Monitor both ISL and keepalive on separate failure domains.
  4. Enforce path-diversity checks during VSX design review.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which a linear stacking topology leaves a single path to the last member. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a distribution ring loses a link and traffic remains blocked despite alternate Layer 2 connectivity. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a VSX pair loses its inter-switch link and the team assumes the remaining keepalive alone carries user traffic between peers. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a VSX deployment uses a keepalive route through the same physical links as its inter-switch link. It would leave the present failure mode insufficiently addressed.

Question 634

A campus uses VRRP on an SVI but hosts keep targeting a physical gateway address rather than the shared virtual address. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Retest convergence after timer or software upgrades rather than assume defaults.
  2. Document root bridge ownership per VLAN or instance in resilience plans.
  3. Test gateway and routed uplink failure scenarios before production.
  4. Standardize virtual gateway addresses in subnet design documentation.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which hosts pointing to a physical router address cannot benefit from VRRP gateway movement. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a VSX peer restarts for an upgrade and port-channel traffic drops because the downstream LACP timeout is too strict for the expected convergence. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when two redundant switches disagree about the device that should be the STP root for a campus distribution VLAN. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a site uses a single access-switch uplink to two cores with static routes and expects automatic gateway failover when the first core fails. It would leave the present failure mode insufficiently addressed.

Question 635

A redundant OSPF network has two uplinks, but one interface's routing adjacency never forms because its area ID is wrong. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Compare OSPF parameters whenever a redundant routed link is added.
  2. Keep BPDU protection enabled on ordinary user ports and document exceptions.
  3. Require member version checks before adding a replacement or upgrading the stack.
  4. Enforce path-diversity checks during VSX design review.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which OSPF peers in different areas cannot establish a normal shared-segment adjacency. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

B:

That control is useful for a different failure, such as when a switch receives BPDUs on an access edge configured with BPDU protection and disables the port. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a stack's standby control member cannot take over after a failover drill because the new member has incompatible firmware. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a VSX deployment uses a keepalive route through the same physical links as its inter-switch link. It would leave the present failure mode insufficiently addressed.

Question 636

A core switch keeps forwarding after a power supply is removed, but a maintenance exercise shows no power fault alarm reaches operations. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Enforce path-diversity checks during VSX design review.
  2. Include power-module monitoring and replacement plans in resilience runbooks.
  3. Monitor both ISL and keepalive on separate failure domains.
  4. Retest convergence after timer or software upgrades rather than assume defaults.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which redundant hardware can mask a failure unless power-supply status is monitored. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a VSX deployment uses a keepalive route through the same physical links as its inter-switch link. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a VSX pair loses its inter-switch link and the team assumes the remaining keepalive alone carries user traffic between peers. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a VSX peer restarts for an upgrade and port-channel traffic drops because the downstream LACP timeout is too strict for the expected convergence. It would leave the present failure mode insufficiently addressed.

Question 637

A VSX peer restarts for an upgrade and port-channel traffic drops because the downstream LACP timeout is too strict for the expected convergence. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Include power-module monitoring and replacement plans in resilience runbooks.
  2. Audit logical-LAG VLAN state rather than independently drifting member configurations.
  3. Require member version checks before adding a replacement or upgrading the stack.
  4. Retest convergence after timer or software upgrades rather than assume defaults.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which the downstream aggregator declares the shared peer unavailable before the intended recovery completes. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a core switch keeps forwarding after a power supply is removed, but a maintenance exercise shows no power fault alarm reaches operations. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a dual-homed server loses access after one LAG member fails because the remaining link has a mismatched VLAN allow list. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a stack's standby control member cannot take over after a failover drill because the new member has incompatible firmware. It would leave the present failure mode insufficiently addressed.

Question 638

An access switch experiences a broadcast storm after a user connects two LAN ports with a patch cable. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Include power-module monitoring and replacement plans in resilience runbooks.
  2. Record expected bridge roots, blocked ports and convergence times.
  3. Enable approved edge loop prevention and alert on broadcast rate spikes.
  4. Compare OSPF parameters whenever a redundant routed link is added.

Explanation

Correct Answer

C:

This is a continuing control for the failure mode in which a physical Layer 2 loop can repeatedly replicate flooded frames and saturate the segment. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a core switch keeps forwarding after a power supply is removed, but a maintenance exercise shows no power fault alarm reaches operations. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a distribution ring loses a link and traffic remains blocked despite alternate Layer 2 connectivity. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a redundant OSPF network has two uplinks, but one interface's routing adjacency never forms because its area ID is wrong. It would leave the present failure mode insufficiently addressed.

Question 639

Two redundant switches disagree about the device that should be the STP root for a campus distribution VLAN. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Audit logical-LAG VLAN state rather than independently drifting member configurations.
  2. Document root bridge ownership per VLAN or instance in resilience plans.
  3. Verify stack cable topology during rack acceptance.
  4. Enforce path-diversity checks during VSX design review.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which an unintended bridge root can steer traffic into a fragile or suboptimal topology. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a dual-homed server loses access after one LAG member fails because the remaining link has a mismatched VLAN allow list. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a VSF stack has members connected in a line, so one intermember cable failure isolates the last unit. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a VSX deployment uses a keepalive route through the same physical links as its inter-switch link. It would leave the present failure mode insufficiently addressed.

Question 640

A stack's standby control member cannot take over after a failover drill because the new member has incompatible firmware. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Retest convergence after timer or software upgrades rather than assume defaults.
  2. Compare OSPF parameters whenever a redundant routed link is added.
  3. Require member version checks before adding a replacement or upgrading the stack.
  4. Test gateway and routed uplink failure scenarios before production.

Explanation

Correct Answer

C:

This is a continuing control for the failure mode in which control-member version mismatch prevents stable participation in the intended logical stack. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a VSX peer restarts for an upgrade and port-channel traffic drops because the downstream LACP timeout is too strict for the expected convergence. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a redundant OSPF network has two uplinks, but one interface's routing adjacency never forms because its area ID is wrong. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a site uses a single access-switch uplink to two cores with static routes and expects automatic gateway failover when the first core fails. It would leave the present failure mode insufficiently addressed.