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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 65

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.

Question 641

A new finance printer is connected to an access port in VLAN 130, but the subnet gateway is an SVI in VLAN 120. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Track usable access members as part of SVI availability checks.
  2. Include IPv6 management routes in dual-stack change templates.
  3. Document expected device counts and secure authentication mode for each endpoint class.
  4. Keep physical port-to-VLAN mappings in endpoint provisioning records.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which access VLAN membership does not match the subnet selected for that endpoint. 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 CX switch has a healthy SVI but hosts cannot reach the directly connected gateway because the VLAN has no active member ports. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a management interface is configured with an IPv6 address, but SNMPv3 traffic never leaves because its selected management VRF lacks an IPv6 default route. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when an edge port has port-security configured for one device and a desk phone with a downstream PC is unexpectedly blocked. It would leave the present failure mode insufficiently addressed.

Question 642

An AP trunk has every VLAN enabled, allowing guest client traffic onto a restricted internal network. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Include IPv6 management routes in dual-stack change templates.
  2. Document LAG per-flow load-distribution expectations in capacity forecasts.
  3. Map each policy requirement to the actual transit and enforcement layer.
  4. Review trunk allow lists during AP and SSID changes.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which an over-permissive tagged trunk undermines the intended segmentation boundary. 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 management interface is configured with an IPv6 address, but SNMPv3 traffic never leaves because its selected management VRF lacks an IPv6 default route. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a LAG uses a hash selection that causes one large storage flow to occupy a single member while other links remain mostly idle. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a distribution switch applies an ingress ACL to a routed SVI, but administrators expect it to block frames bridged only inside the same VLAN. It would leave the present failure mode insufficiently addressed.

Question 643

A CX switch has a healthy SVI but hosts cannot reach the directly connected gateway because the VLAN has no active member ports. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Include static forwarding table cleanup in change records for moved equipment.
  2. Track usable access members as part of SVI availability checks.
  3. Retest role-based separation when identity or WLAN mappings change.
  4. Keep binding enforcement and legitimate static-device exceptions documented.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which an SVI may remain ineffective when its underlying VLAN has no usable access connectivity. 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 static MAC entries for critical systems, but after an authorized server relocation traffic still forwards to the old port. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a security requirement calls for isolating two guest groups inside one SSID, but both groups land in an unrestricted shared VLAN. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a campus needs to reduce ARP spoofing from open lab ports, yet engineers plan to permit all ARP replies. It would leave the present failure mode insufficiently addressed.

Question 644

An 802.1Q trunk carries VLAN 20 untagged on one end and tagged on the other, causing intermittent DHCP placement. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Maintain an explicit native-VLAN plan instead of relying on implicit defaults.
  2. Test DHCP relay reachability after VRF migrations.
  3. Cross-check subnet calculations before SVI deployments.
  4. Require loop-prevention approval for every Layer 2 redundancy change.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which the two peers disagree about how untagged Ethernet frames map to a VLAN. 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 client subnet uses an on-box DHCP relay but its requests never reach the centralized server after a VRF split. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a new Layer 3 switch hosts the user VLAN gateway but the SVI mask excludes part of the expected address range. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a campus administrator disables STP globally to reduce convergence time, and a redundant link introduces a broadcast storm. It would leave the present failure mode insufficiently addressed.

Question 645

A file server connected by a LAG shows intermittent flows and one link is outside the port-channel. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Monitor querier presence and group membership after IPTV changes.
  2. Map each policy requirement to the actual transit and enforcement layer.
  3. Validate LAG member compatibility before moving server links.
  4. Monitor MAC table occupancy and churn for high-density VLANs.

Explanation

Correct Answer

C:

This is a continuing control for the failure mode in which one interface negotiates differently and is excluded from the logical forwarding group. 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 multicast video stream floods every port in a VLAN after an IGMP snooping feature is disabled. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a distribution switch applies an ingress ACL to a routed SVI, but administrators expect it to block frames bridged only inside the same VLAN. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when an access switch shows a large unknown-unicast flood after several upstream MAC addresses aged out too quickly. It would leave the present failure mode insufficiently addressed.

Question 646

A classroom endpoint cannot see a local broadcast discovery service across two isolated VLANs. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Alert on sustained MAC flapping and document dual-homing designs.
  2. Reserve gateway IPs and validate redundancy design before provisioning.
  3. Monitor querier presence and group membership after IPTV changes.
  4. Keep cross-VLAN discovery exceptions narrowly documented.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which Layer 2 broadcasts do not cross a routed VLAN boundary by default. 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 sees periodic MAC address moves between two access ports with no planned mobility. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when an engineer configures a VLAN SVI for default gateway service but accidentally assigns the same IPv4 address to another independent router without VRRP or active-gateway design. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a multicast video stream floods every port in a VLAN after an IGMP snooping feature is disabled. It would leave the present failure mode insufficiently addressed.

Question 647

A campus sees periodic MAC address moves between two access ports with no planned mobility. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Alert on sustained MAC flapping and document dual-homing designs.
  2. Keep cross-VLAN discovery exceptions narrowly documented.
  3. Require VSX LAG configuration consistency checks before change approval.
  4. Monitor querier presence and group membership after IPTV changes.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which unexpected rapid MAC movement generally indicates multiple ingress paths for the same source. 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 classroom endpoint cannot see a local broadcast discovery service across two isolated VLANs. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a VSX downstream switch has an active multi-chassis LAG, but the primary and secondary peers disagree on the permitted client VLANs. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a multicast video stream floods every port in a VLAN after an IGMP snooping feature is disabled. It would leave the present failure mode insufficiently addressed.

Question 648

A switch is configured with DHCP snooping, but legitimate lease offers arriving from the authorized DHCP uplink are dropped. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Review DHCP trusted-port paths when changing topology.
  2. Include static forwarding table cleanup in change records for moved equipment.
  3. Maintain an explicit native-VLAN plan instead of relying on implicit defaults.
  4. Validate LAG member compatibility before moving server links.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which the legitimate offer arrives on an interface classified as untrusted by the snooping policy. 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 static MAC entries for critical systems, but after an authorized server relocation traffic still forwards to the old port. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when an 802.1Q trunk carries VLAN 20 untagged on one end and tagged on the other, causing intermittent DHCP placement. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a file server connected by a LAG shows intermittent flows and one link is outside the port-channel. It would leave the present failure mode insufficiently addressed.

Question 649

A rogue small office router begins answering DHCP on an open desk port. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Keep binding enforcement and legitimate static-device exceptions documented.
  2. Validate LAG member compatibility before moving server links.
  3. Keep user-facing ports untrusted and alert on rogue server attempts.
  4. Track approved optic types and cable reach by platform.

Explanation

Correct Answer

C:

This is a continuing control for the failure mode in which unrestricted DHCP server responses on an access port can assign clients an incorrect default route. 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 needs to reduce ARP spoofing from open lab ports, yet engineers plan to permit all ARP replies. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a file server connected by a LAG shows intermittent flows and one link is outside the port-channel. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a switch trunk's CRC error counters climb while application traffic degrades after a fiber transceiver change. It would leave the present failure mode insufficiently addressed.

Question 650

An access network requires prevention of forged source-IP traffic from endpoints with stolen static addresses. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Audit binding table sources and static-device exceptions.
  2. Document LAG per-flow load-distribution expectations in capacity forecasts.
  3. Include IPv6 management routes in dual-stack change templates.
  4. Require VSX LAG configuration consistency checks before change approval.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which mAC-to-IP-to-port ownership is not enforced by ordinary VLAN isolation. 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 LAG uses a hash selection that causes one large storage flow to occupy a single member while other links remain mostly idle. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a management interface is configured with an IPv6 address, but SNMPv3 traffic never leaves because its selected management VRF lacks an IPv6 default route. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a VSX downstream switch has an active multi-chassis LAG, but the primary and secondary peers disagree on the permitted client VLANs. It would leave the present failure mode insufficiently addressed.