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HP HPE7-A01 Bundle

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 63

Question 620

A central services VLAN is on the approved trunk but a new access port uses a mismatched untagged VLAN. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Validate access port modes during service-desk provisioning.
  2. Require architecture review before requesting cross-site broadcast-domain extension.
  3. Label management VRF dependencies in monitoring integration records.
  4. Include DNS dependency checks when moving NAC nodes.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which the endpoint is placed into a different broadcast domain than the required service. 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 two campuses are connected over a routed WAN, but a team expects a new Layer 2 VLAN to extend automatically to the remote building. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a floor switch responds on the out-of-band management port, but traffic sourced from its default VRF cannot reach the telemetry server. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a campus uses a highly available DNS name for the NAC service, yet one site resolves an obsolete server address. It would leave the present failure mode insufficiently addressed.

Question 621

An AP has a healthy uplink but reports that clock synchronization cannot reach a time source, breaking certificate-based provisioning. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Record partner IDs and LAG designs before touching physical member ports.
  2. Include controller discovery and DNS or DHCP option prerequisites in AP deployment checklists.
  3. Define redundant time sources in standard campus management templates.
  4. Match switchport negotiation standards with real endpoint interface capabilities.

Explanation

Correct Answer

C:

This is a continuing control for the failure mode in which incorrect clock time can invalidate otherwise legitimate certificates during secure connection setup. 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 LACP bundle has four member links, but only two forward because the partner uses a different aggregation key. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when an AP in a new building gets an IP address but discovers no management controller where the design uses controller discovery. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when an IoT reader operates only at 100 Mbps, while the switch port is forced to a gigabit-only setting. It would leave the present failure mode insufficiently addressed.

Question 622

A campus switch forwards IPv4 client traffic but cannot send SNMP traps to a server because the trap destination is reachable only through another VRF. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Verify serial ownership and intended tenant before claiming new inventory.
  2. Keep shutdown state and authorized port roles in access templates.
  3. Require architecture review before requesting cross-site broadcast-domain extension.
  4. Test telemetry from each required VRF as part of monitoring acceptance.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which the telemetry session uses a route table that has no destination path. 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 newly added downstream stack is reachable by ping but cannot complete Central group onboarding because it appears under the wrong tenant. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when an endpoint sees physical carrier on an Aruba CX port but the administrator configured the port administratively disabled. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when two campuses are connected over a routed WAN, but a team expects a new Layer 2 VLAN to extend automatically to the remote building. It would leave the present failure mode insufficiently addressed.

Question 623

A newly added downstream stack is reachable by ping but cannot complete Central group onboarding because it appears under the wrong tenant. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Verify serial ownership and intended tenant before claiming new inventory.
  2. Include DNS dependency checks when moving NAC nodes.
  3. Test telemetry from each required VRF as part of monitoring acceptance.
  4. Record partner IDs and LAG designs before touching physical member ports.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which management reachability does not determine ownership or intended cloud-management scope. 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 campus uses a highly available DNS name for the NAC service, yet one site resolves an obsolete server address. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a campus switch forwards IPv4 client traffic but cannot send SNMP traps to a server because the trap destination is reachable only through another VRF. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when an LACP bundle has four member links, but only two forward because the partner uses a different aggregation key. It would leave the present failure mode insufficiently addressed.

Question 624

An IoT reader operates only at 100 Mbps, while the switch port is forced to a gigabit-only setting. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Test telemetry from each required VRF as part of monitoring acceptance.
  2. Match switchport negotiation standards with real endpoint interface capabilities.
  3. Track device PoE requirements against the rack-level power budget.
  4. Define redundant time sources in standard campus management templates.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which the two endpoints have incompatible advertised or enforced physical Ethernet capabilities. 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 switch forwards IPv4 client traffic but cannot send SNMP traps to a server because the trap destination is reachable only through another VRF. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when an access stack stops powering some APs after a larger radio model is deployed on the same ports. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when an AP has a healthy uplink but reports that clock synchronization cannot reach a time source, breaking certificate-based provisioning. It would leave the present failure mode insufficiently addressed.

Question 625

A VSX pair loses its inter-switch link and the team assumes the remaining keepalive alone carries user traffic between peers. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Include active-gateway consistency tests in peer configuration reviews.
  2. Monitor both ISL and keepalive on separate failure domains.
  3. Record expected bridge roots, blocked ports and convergence times.
  4. Record VSX and downstream LAG partner identities during deployment.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which VSX keepalive reports peer liveness but does not substitute for the inter-switch data link. 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 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.

C:

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 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.

Question 626

A VSX deployment uses a keepalive route through the same physical links as its inter-switch link. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Enable approved edge loop prevention and alert on broadcast rate spikes.
  2. Enforce path-diversity checks during VSX design review.
  3. Verify stack cable topology during rack acceptance.
  4. Record expected bridge roots, blocked ports and convergence times.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which shared failure domains make peer-liveness detection unreliable during an ISL fault. 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 access switch experiences a broadcast storm after a user connects two LAN ports with a patch cable. 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 distribution ring loses a link and traffic remains blocked despite alternate Layer 2 connectivity. It would leave the present failure mode insufficiently addressed.

Question 627

An edge switch's LACP bundle connects to two independent devices that are not configured as a VSX or equivalent multichassis domain. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Require member version checks before adding a replacement or upgrading the stack.
  2. Include power-module monitoring and replacement plans in resilience runbooks.
  3. Record VSX and downstream LAG partner identities during deployment.
  4. Audit logical-LAG VLAN state rather than independently drifting member configurations.

Explanation

Correct Answer

C:

This is a continuing control for the failure mode in which ordinary LACP cannot aggregate ports across unrelated switch systems as one partner. 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 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.

B:

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.

D:

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.

Question 628

Two VSX peers advertise a default gateway, but client MAC learning oscillates after the peers use inconsistent active-gateway MAC addresses. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Include active-gateway consistency tests in peer configuration reviews.
  2. Document root bridge ownership per VLAN or instance in resilience plans.
  3. Test gateway and routed uplink failure scenarios before production.
  4. Enforce path-diversity checks during VSX design review.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which inconsistent gateway identities create conflicting Layer 2 behavior for the same default gateway. 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 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.

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 629

A distribution ring loses a link and traffic remains blocked despite alternate Layer 2 connectivity. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Record expected bridge roots, blocked ports and convergence times.
  2. Enable approved edge loop prevention and alert on broadcast rate spikes.
  3. Include power-module monitoring and replacement plans in resilience runbooks.
  4. Retest convergence after timer or software upgrades rather than assume defaults.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which the standby spanning-tree topology is not transitioning to a usable forwarding state. 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 an access switch experiences a broadcast storm after a user connects two LAN ports with a patch cable. It would leave the present failure mode insufficiently addressed.

C:

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.

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 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.