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Last Update: Nov 07, 2026

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HP HPE7-A01 Practice Test 21

Question 200

Following a campus change for this issue—a port should accept only approved hardware addresses—which result most directly verifies that the remedy works?

  1. Compare forged and valid ARP replies and their inspection counters.
  2. Check both peers' negotiated duplex and error counters.
  3. Join and leave a test group and observe forwarding-port membership.
  4. Connect an unregistered test device and inspect the violation action.

Explanation

Correct Answer

D:

Port security restricts which endpoint MAC addresses can use the link. Connect an unregistered test device and inspect the violation action directly tests the desired behavior.

Incorrect Answers

A:

Dynamic ARP inspection can reject ARP packets inconsistent with trusted bindings. That observation tests a different condition, not the required result.

B:

Duplex mismatch can create collisions and poor performance. That observation tests a different condition, not the required result.

C:

IGMP snooping limits eligible multicast delivery to interested ports. That observation tests a different condition, not the required result.

Question 201

A client knows a local IPv4 destination but cannot locate its MAC address. Which change most directly meets this campus requirement?

  1. Check 802.11 authentication and association management frames before DHCP.
  2. Trace EAPOL between client and switch and RADIUS between switch and server.
  3. Inspect ARP request and reply exchange and local VLAN reachability.
  4. Account for periodic beacons and other 802.11 management airtime.

Explanation

Correct Answer

C:

ARP resolves IPv4 neighbors to MAC addresses within the local broadcast domain. The engineer should inspect ARP request and reply exchange and local VLAN reachability.

Incorrect Answers

A:

Wi-Fi management frames establish the radio connection before IP-layer onboarding. It is not a direct remedy for the condition described.

B:

EAPOL is used at the endpoint edge while the authenticator relays authentication over RADIUS. It is not a direct remedy for the condition described.

D:

Beacons and management frames consume radio airtime independently of application payload. It is not a direct remedy for the condition described.

Question 202

After completing the planned work for this situation—an administrator needs differentiated command privileges on AOS-CX switches—how should success be checked?

  1. Disconnect RADIUS and inspect critical-role policy.
  2. Attempt an allowed and restricted CLI operation for a test admin.
  3. Inspect RADIUS attributes and the port's applied VLAN.
  4. Compare a trusted and unknown-CA client authentication result.

Explanation

Correct Answer

B:

Authentication identifies administrators; authorization controls permitted commands. Attempt an allowed and restricted CLI operation for a test admin directly tests the desired behavior.

Incorrect Answers

A:

A RADIUS outage should not imply blanket production access. That observation tests a different condition, not the required result.

C:

Authentication success and assigned authorization policy are separate decisions. That observation tests a different condition, not the required result.

D:

EAP-TLS succeeds only with a valid trusted certificate chain. That observation tests a different condition, not the required result.

Question 203

Following a campus change for this issue—a band-steering policy makes older 2.4-only scanners disappear—which result most directly verifies that the remedy works?

  1. Correlate retry rate with noise floor and other transmitters.
  2. Test representative single-band and dual-band scanners.
  3. Compare beacon air-time percentage before and after consolidation.
  4. Measure coverage overlap and retries across the floor.

Explanation

Correct Answer

B:

A forced 5 GHz policy can exclude clients that lack that band. Test representative single-band and dual-band scanners directly tests the desired behavior.

Incorrect Answers

A:

RSSI alone cannot identify noise or contention-driven retries. That observation tests a different condition, not the required result.

C:

Each SSID adds beacon and management overhead to the channel. That observation tests a different condition, not the required result.

D:

Excess transmit power can enlarge contention cells and delay roaming. That observation tests a different condition, not the required result.

Question 204

The engineer reports completing this change: Apply matching active-gateway settings on both supported SVIs. Which verification should be included in the handover?

  1. Simulate controlled keepalive or ISL loss and review forwarded traffic.
  2. Force a master transition and confirm the virtual gateway stays reachable.
  3. Check the FIB for multiple equal next hops and sample path use.
  4. Compare SVI and active-gateway configuration on both switches.

Explanation

Correct Answer

D:

Active-gateway settings must be consistent across VSX peers. Compare SVI and active-gateway configuration on both switches directly tests the desired behavior.

Incorrect Answers

A:

Peer-state detection and the configured safeguards govern split failure response. That observation tests a different condition, not the required result.

B:

VRRP can provide a shared virtual gateway independent of a VSX pair. That observation tests a different condition, not the required result.

C:

Equal-cost multipath distributes flows without a spanning-tree blocked uplink. That observation tests a different condition, not the required result.

Question 205

An Aruba Central group configuration differs from actual device state. Which change most directly meets this campus requirement?

  1. Tune threshold/timing while preserving raw telemetry.
  2. Use supported sFlow telemetry instead of full packet mirroring.
  3. Install a suitable NAE script and configure an agent.
  4. Review the configuration audit and reconcile the intended group settings.

Explanation

Correct Answer

D:

Configuration intent and installed running state must be compared. The engineer should review the configuration audit and reconcile the intended group settings.

Incorrect Answers

A:

Alert policy can be refined without losing underlying monitoring data. It is not a direct remedy for the condition described.

B:

sFlow samples packets and interface counters for flow visibility. It is not a direct remedy for the condition described.

C:

Network Analytics Engine agents can monitor specified switch conditions. It is not a direct remedy for the condition described.

Question 206

A technician has applied this fix: Use spectrum analysis to identify non-Wi-Fi interferers. Which observation would provide the strongest acceptance evidence?

  1. Monitor roam RSSI and handoff delay in the hallway.
  2. Compare negotiated PHY capabilities with airtime efficiency.
  3. Compare spectrum occupancy with AP channel utilization.
  4. Compare beacon air-time percentage before and after consolidation.

Explanation

Correct Answer

C:

Microwave, Bluetooth and industrial emitters can raise noise without being an 802.11 AP. Compare spectrum occupancy with AP channel utilization directly tests the desired behavior.

Incorrect Answers

A:

Excess cell reach and very low data rates can promote sticky clients. That observation tests a different condition, not the required result.

B:

Legacy clients cannot use HE-only scheduling features. That observation tests a different condition, not the required result.

D:

Each SSID adds beacon and management overhead to the channel. That observation tests a different condition, not the required result.

Question 207

During campus implementation, an OSPF link needs faster failed-peer detection than dead timers. What should the engineer configure or correct?

  1. Integrate supported BFD on the relevant routed interfaces.
  2. Check source/peer reachability and transport before BGP attributes.
  3. Use a supported blackhole/null route in the proper VRF.
  4. Apply inbound prefix-lists or route-maps with explicit allow policy.

Explanation

Correct Answer

A:

BFD can drive rapid protocol fault detection independent of standard hello timers. The engineer should integrate supported BFD on the relevant routed interfaces.

Incorrect Answers

B:

BGP uses a TCP session and requires reachable configured neighbors. It is not a direct remedy for the condition described.

C:

Null-route forwarding disposes packets without a normal next hop. It is not a direct remedy for the condition described.

D:

Inbound filtering controls which neighbor routes are accepted. It is not a direct remedy for the condition described.

Question 208

For an HPE Aruba Networking campus deployment, a voice endpoint shares a port with an employee laptop. Which action best addresses it?

  1. Enable supported RADIUS accounting independently of authentication.
  2. Configure supported voice/data or multi-domain port authentication.
  3. Ensure certificate revocation checking is enforced where applicable.
  4. Set a narrowly scoped critical/backup authorization role.

Explanation

Correct Answer

B:

Phone and data station may require separate access identities and roles. The engineer should configure supported voice/data or multi-domain port authentication.

Incorrect Answers

A:

Accounting records session events rather than selecting the identity. It is not a direct remedy for the condition described.

C:

A valid-looking certificate may no longer be authorized after revocation. It is not a direct remedy for the condition described.

D:

A RADIUS outage should not imply blanket production access. It is not a direct remedy for the condition described.

Question 209

The engineer reports completing this change: Correct the neighbor remote AS and intended eBGP/iBGP relationship. Which verification should be included in the handover?

  1. Display both identical routes in distinct VRFs and test isolation.
  2. Send allowed and denied test prefixes and inspect Adj-RIB-In.
  3. Fail one transit and observe TCP and BGP session continuity.
  4. Compare neighbor configuration with received OPEN notifications.

Explanation

Correct Answer

D:

BGP OPEN negotiation checks peer AS compatibility. Compare neighbor configuration with received OPEN notifications directly tests the desired behavior.

Incorrect Answers

A:

VRFs maintain independent route tables and overlapping address space. That observation tests a different condition, not the required result.

B:

Inbound filtering controls which neighbor routes are accepted. That observation tests a different condition, not the required result.

C:

Loopback sessions survive individual link changes when routed connectivity remains. That observation tests a different condition, not the required result.

Question 210

A technician has applied this fix: Ensure RF coverage overlaps with an appropriate neighbor cell plan. Which observation would provide the strongest acceptance evidence?

  1. Reboot a test conductor and observe conductor election and management access.
  2. Map failure domains and test representative single-component outages.
  3. Test the keepalive source/peer connectivity and show VSX status.
  4. Disable one AP and measure surviving signal and reassociation.

Explanation

Correct Answer

D:

Redundant coverage is a radio design concern, not only switch redundancy. Disable one AP and measure surviving signal and reassociation directly tests the desired behavior.

Incorrect Answers

A:

Stack control-plane failover is distinct from individual data-link forwarding. That observation tests a different condition, not the required result.

B:

Device redundancy is ineffective when both paths depend on one shared failed component. That observation tests a different condition, not the required result.

C:

VSX keepalive is a separate liveness mechanism from the ISL. That observation tests a different condition, not the required result.


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