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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 82

Question 810

A floor switch connects APs but the uplink passes only the native VLAN while employee and voice SSIDs use tagged VLANs. Which first diagnostic check is most useful before changing the network?

  1. Inspect VLAN membership and trunk allow lists on both uplink peers.
  2. Inspect LACP actor and partner states, keys and member flags.
  3. Compare routes and source addresses in the default and management VRFs.
  4. Test gateway, DNS and outbound reachability from the switch management context.

Explanation

Correct Answer

A:

This check collects evidence at the layer implicated by the symptom: the trunk's allowed-VLAN list excludes the tagged client networks. Examine the evidence before choosing the corrective change.

Incorrect Answers

B:

This would be a reasonable check when an LACP bundle has four member links, but only two forward because the partner uses a different aggregation key, but is less direct for the issue at hand: the trunk's allowed-VLAN list excludes the tagged client networks.

C:

This would be a reasonable check when a floor switch responds on the out-of-band management port, but traffic sourced from its default VRF cannot reach the telemetry server, but is less direct for the issue at hand: the trunk's allowed-VLAN list excludes the tagged client networks.

D:

This would be a reasonable check when a new branch switch powers on but remains absent from Central after its management VLAN is provisioned, but is less direct for the issue at hand: the trunk's allowed-VLAN list excludes the tagged client networks.

Question 811

An AP in a new building gets an IP address but discovers no management controller where the design uses controller discovery. Which first diagnostic check is most useful before changing the network?

  1. Trace the WAN interfaces and verify whether a Layer 2 overlay exists at all.
  2. Inspect the AP discovery logs and controller reachability from its management subnet.
  3. Inspect negotiation advertisement and interface operational speed on both devices.
  4. Inspect interface port mode, untagged VLAN and MAC address learning.

Explanation

Correct Answer

B:

This check collects evidence at the layer implicated by the symptom: DHCP allocation alone does not provide controller discovery or controller-route reachability. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check 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, but is less direct for the issue at hand: DHCP allocation alone does not provide controller discovery or controller-route reachability.

C:

This would be a reasonable check when an IoT reader operates only at 100 Mbps, while the switch port is forced to a gigabit-only setting, but is less direct for the issue at hand: DHCP allocation alone does not provide controller discovery or controller-route reachability.

D:

This would be a reasonable check when a central services VLAN is on the approved trunk but a new access port uses a mismatched untagged VLAN, but is less direct for the issue at hand: DHCP allocation alone does not provide controller discovery or controller-route reachability.

Question 812

A floor switch responds on the out-of-band management port, but traffic sourced from its default VRF cannot reach the telemetry server. Which first diagnostic check is most useful before changing the network?

  1. Inspect interface port mode, untagged VLAN and MAC address learning.
  2. Inspect negotiation advertisement and interface operational speed on both devices.
  3. Query the NAC hostname using the exact DNS server configured on the switch.
  4. Compare routes and source addresses in the default and management VRFs.

Explanation

Correct Answer

D:

This check collects evidence at the layer implicated by the symptom: the management and default VRFs maintain separate forwarding tables. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a central services VLAN is on the approved trunk but a new access port uses a mismatched untagged VLAN, but is less direct for the issue at hand: the management and default VRFs maintain separate forwarding tables.

B:

This would be a reasonable check when an IoT reader operates only at 100 Mbps, while the switch port is forced to a gigabit-only setting, but is less direct for the issue at hand: the management and default VRFs maintain separate forwarding tables.

C:

This would be a reasonable check when a campus uses a highly available DNS name for the NAC service, yet one site resolves an obsolete server address, but is less direct for the issue at hand: the management and default VRFs maintain separate forwarding tables.

Question 813

A wireless building is connected to the core but a user VLAN is mapped inconsistently between the SSID profile and switch trunk. Which first diagnostic check is most useful before changing the network?

  1. Inspect interface port mode, untagged VLAN and MAC address learning.
  2. Compare the claimed device serial with its assigned tenant and group.
  3. Inspect VLAN membership and trunk allow lists on both uplink peers.
  4. Inspect client VLAN assignment and the uplink's tagged-VLAN membership.

Explanation

Correct Answer

D:

This check collects evidence at the layer implicated by the symptom: the wireless access edge assigns clients to a VLAN that is missing from the intended wired transport. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a central services VLAN is on the approved trunk but a new access port uses a mismatched untagged VLAN, but is less direct for the issue at hand: the wireless access edge assigns clients to a VLAN that is missing from the intended wired transport.

B:

This would be a reasonable check when a newly added downstream stack is reachable by ping but cannot complete Central group onboarding because it appears under the wrong tenant, but is less direct for the issue at hand: the wireless access edge assigns clients to a VLAN that is missing from the intended wired transport.

C:

This would be a reasonable check when a floor switch connects APs but the uplink passes only the native VLAN while employee and voice SSIDs use tagged VLANs, but is less direct for the issue at hand: the wireless access edge assigns clients to a VLAN that is missing from the intended wired transport.

Question 814

A campus uses a highly available DNS name for the NAC service, yet one site resolves an obsolete server address. Which first diagnostic check is most useful before changing the network?

  1. Query the NAC hostname using the exact DNS server configured on the switch.
  2. Inspect per-port power negotiation and chassis PoE consumption.
  3. Inspect interface port mode, untagged VLAN and MAC address learning.
  4. Inspect the AP discovery logs and controller reachability from its management subnet.

Explanation

Correct Answer

A:

This check collects evidence at the layer implicated by the symptom: the access switch follows an outdated resolved address despite having a valid AAA profile. Examine the evidence before choosing the corrective change.

Incorrect Answers

B:

This would be a reasonable check when an access stack stops powering some APs after a larger radio model is deployed on the same ports, but is less direct for the issue at hand: the access switch follows an outdated resolved address despite having a valid AAA profile.

C:

This would be a reasonable check when a central services VLAN is on the approved trunk but a new access port uses a mismatched untagged VLAN, but is less direct for the issue at hand: the access switch follows an outdated resolved address despite having a valid AAA profile.

D:

This would be a reasonable check when an AP in a new building gets an IP address but discovers no management controller where the design uses controller discovery, but is less direct for the issue at hand: the access switch follows an outdated resolved address despite having a valid AAA profile.

Question 815

A VoIP handset receives power from an access switch but lands in the data VLAN rather than its intended voice VLAN. Which first diagnostic check is most useful before changing the network?

  1. Test gateway, DNS and outbound reachability from the switch management context.
  2. Inspect LLDP-MED advertisements and the port's VLAN assignment.
  3. Inspect interface port mode, untagged VLAN and MAC address learning.
  4. Inspect per-port power negotiation and chassis PoE consumption.

Explanation

Correct Answer

B:

This check collects evidence at the layer implicated by the symptom: power delivery and the phone's voice VLAN classification are separate controls. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a new branch switch powers on but remains absent from Central after its management VLAN is provisioned, but is less direct for the issue at hand: power delivery and the phone's voice VLAN classification are separate controls.

C:

This would be a reasonable check when a central services VLAN is on the approved trunk but a new access port uses a mismatched untagged VLAN, but is less direct for the issue at hand: power delivery and the phone's voice VLAN classification are separate controls.

D:

This would be a reasonable check when an access stack stops powering some APs after a larger radio model is deployed on the same ports, but is less direct for the issue at hand: power delivery and the phone's voice VLAN classification are separate controls.

Question 816

An access stack stops powering some APs after a larger radio model is deployed on the same ports. Which first diagnostic check is most useful before changing the network?

  1. Inspect VLAN membership and trunk allow lists on both uplink peers.
  2. Inspect per-port power negotiation and chassis PoE consumption.
  3. Inspect the AP discovery logs and controller reachability from its management subnet.
  4. Inspect trap source-interface selection and route lookup in that VRF.

Explanation

Correct Answer

B:

This check collects evidence at the layer implicated by the symptom: available PoE power or negotiated class is insufficient for the newer AP's operating requirements. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a floor switch connects APs but the uplink passes only the native VLAN while employee and voice SSIDs use tagged VLANs, but is less direct for the issue at hand: available PoE power or negotiated class is insufficient for the newer AP's operating requirements.

C:

This would be a reasonable check when an AP in a new building gets an IP address but discovers no management controller where the design uses controller discovery, but is less direct for the issue at hand: available PoE power or negotiated class is insufficient for the newer AP's operating requirements.

D:

This would be a reasonable check 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, but is less direct for the issue at hand: available PoE power or negotiated class is insufficient for the newer AP's operating requirements.

Question 817

An endpoint sees physical carrier on an Aruba CX port but the administrator configured the port administratively disabled. Which first diagnostic check is most useful before changing the network?

  1. Inspect time offset, NTP reachability and certificate validation events.
  2. Inspect the AP discovery logs and controller reachability from its management subnet.
  3. Inspect client VLAN assignment and the uplink's tagged-VLAN membership.
  4. Inspect both administrative and operational interface states.

Explanation

Correct Answer

D:

This check collects evidence at the layer implicated by the symptom: optical carrier cannot override an administratively disabled interface. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when an AP has a healthy uplink but reports that clock synchronization cannot reach a time source, breaking certificate-based provisioning, but is less direct for the issue at hand: optical carrier cannot override an administratively disabled interface.

B:

This would be a reasonable check when an AP in a new building gets an IP address but discovers no management controller where the design uses controller discovery, but is less direct for the issue at hand: optical carrier cannot override an administratively disabled interface.

C:

This would be a reasonable check when a wireless building is connected to the core but a user VLAN is mapped inconsistently between the SSID profile and switch trunk, but is less direct for the issue at hand: optical carrier cannot override an administratively disabled interface.

Question 818

An LACP bundle has four member links, but only two forward because the partner uses a different aggregation key. Which first diagnostic check is most useful before changing the network?

  1. Trace the WAN interfaces and verify whether a Layer 2 overlay exists at all.
  2. Inspect client VLAN assignment and the uplink's tagged-VLAN membership.
  3. Inspect LACP actor and partner states, keys and member flags.
  4. Inspect negotiation advertisement and interface operational speed on both devices.

Explanation

Correct Answer

C:

This check collects evidence at the layer implicated by the symptom: members with mismatched partner or key information cannot join the same LAG forwarding aggregator. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check 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, but is less direct for the issue at hand: members with mismatched partner or key information cannot join the same LAG forwarding aggregator.

B:

This would be a reasonable check when a wireless building is connected to the core but a user VLAN is mapped inconsistently between the SSID profile and switch trunk, but is less direct for the issue at hand: members with mismatched partner or key information cannot join the same LAG forwarding aggregator.

D:

This would be a reasonable check when an IoT reader operates only at 100 Mbps, while the switch port is forced to a gigabit-only setting, but is less direct for the issue at hand: members with mismatched partner or key information cannot join the same LAG forwarding aggregator.

Question 819

Two campuses are connected over a routed WAN, but a team expects a new Layer 2 VLAN to extend automatically to the remote building. Which first diagnostic check is most useful before changing the network?

  1. Inspect VLAN membership and trunk allow lists on both uplink peers.
  2. Inspect the AP discovery logs and controller reachability from its management subnet.
  3. Trace the WAN interfaces and verify whether a Layer 2 overlay exists at all.
  4. Inspect per-port power negotiation and chassis PoE consumption.

Explanation

Correct Answer

C:

This check collects evidence at the layer implicated by the symptom: an IP-routed link does not propagate Ethernet broadcast domains merely because VLAN IDs match. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a floor switch connects APs but the uplink passes only the native VLAN while employee and voice SSIDs use tagged VLANs, but is less direct for the issue at hand: an IP-routed link does not propagate Ethernet broadcast domains merely because VLAN IDs match.

B:

This would be a reasonable check when an AP in a new building gets an IP address but discovers no management controller where the design uses controller discovery, but is less direct for the issue at hand: an IP-routed link does not propagate Ethernet broadcast domains merely because VLAN IDs match.

D:

This would be a reasonable check when an access stack stops powering some APs after a larger radio model is deployed on the same ports, but is less direct for the issue at hand: an IP-routed link does not propagate Ethernet broadcast domains merely because VLAN IDs match.

Question 820

A central services VLAN is on the approved trunk but a new access port uses a mismatched untagged VLAN. Which first diagnostic check is most useful before changing the network?

  1. Test gateway, DNS and outbound reachability from the switch management context.
  2. Compare routes and source addresses in the default and management VRFs.
  3. Inspect interface port mode, untagged VLAN and MAC address learning.
  4. Inspect negotiation advertisement and interface operational speed on both devices.

Explanation

Correct Answer

C:

This check collects evidence at the layer implicated by the symptom: the endpoint is placed into a different broadcast domain than the required service. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a new branch switch powers on but remains absent from Central after its management VLAN is provisioned, but is less direct for the issue at hand: the endpoint is placed into a different broadcast domain than the required service.

B:

This would be a reasonable check when a floor switch responds on the out-of-band management port, but traffic sourced from its default VRF cannot reach the telemetry server, but is less direct for the issue at hand: the endpoint is placed into a different broadcast domain than the required service.

D:

This would be a reasonable check when an IoT reader operates only at 100 Mbps, while the switch port is forced to a gigabit-only setting, but is less direct for the issue at hand: the endpoint is placed into a different broadcast domain than the required service.