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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 18

Question 170

At Lakeside Classroom, a print-server connection runs at 100 Mb/s though both devices support 1 Gb/s and auto-negotiation was disabled at one end. What should be examined to confirm the actual failure mechanism?

  1. Examine per-port tag membership and tagged packet captures at the failing VLAN boundary.
  2. Cross-check operational speed duplex FCS errors and auto-negotiation on each side of the link.
  3. Examine EAPOL start identity exchange RADIUS decision and authenticated port status.
  4. Examine management frames for authentication association rejection status and security mismatch.

Explanation

Correct Answer

B:

For Lakeside Classroom, the decisive mechanism is Ethernet negotiation and duplex. 802.3 physical link negotiation precedes Layer 2 and Layer 3 service validation. Compare operational speed duplex FCS errors and auto-negotiation on each side of the link is the most direct way to isolate this particular failure before making a change.

Incorrect Answers

A:

This is relevant to 802.1Q VLAN tagging, where 802.1Q tagging preserves logical broadcast-domain identity over shared Ethernet links In the Lakeside Classroom case, Those observations could be normal while the stated fault persists. The specific mechanism is 802.3 physical link negotiation precedes Layer 2 and Layer 3 service validation

C:

This is relevant to 802.1X EAPOL versus IP service, where 802.1X is port-based access control; IP configuration occurs after network admission In the Lakeside Classroom case, Those observations could be normal while the stated fault persists. The specific mechanism is 802.3 physical link negotiation precedes Layer 2 and Layer 3 service validation

D:

This is relevant to 802.11 association sequence, where 802.11 discovery and association occur before user traffic can be successfully forwarded In the Lakeside Classroom case, Those observations could be normal while the stated fault persists. The specific mechanism is 802.3 physical link negotiation precedes Layer 2 and Layer 3 service validation

Question 171

At South Science Wing, a guest segment accidentally receives RA messages from a newly connected third-party gateway. What recurring protection should accompany this configuration?

  1. Document allowed router ports so maintenance does not break IPv6 onboarding.
  2. Document native VLAN consistently and keep sensitive VLANs tagged.
  3. Deny unapproved client VLAN changes and review port moves before deployment.
  4. Never expand a trunk to all VLANs merely to resolve one missing segment.

Explanation

Correct Answer

A:

For South Science Wing, the decisive mechanism is IPv6 RA guard. IPv6 RA guard limits unauthorized router advertisements on access links. Document allowed router ports so maintenance does not break IPv6 onboarding is an enduring limitation on the operational risk, not simply a one-time passing test.

Incorrect Answers

B:

This is relevant to Native VLAN mismatch, where a native VLAN defines forwarding for untagged frames on a VLAN-aware trunk In the South Science Wing case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is iPv6 RA guard limits unauthorized router advertisements on access links

C:

This is relevant to Access VLAN classification, where an access port carries untagged frames in one configured access VLAN In the South Science Wing case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is iPv6 RA guard limits unauthorized router advertisements on access links

D:

This is relevant to Tagged trunk allowlist, where a VLAN trunk forwards only permitted tagged VLANs and its native VLAN according to configuration In the South Science Wing case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is iPv6 RA guard limits unauthorized router advertisements on access links

Question 172

At Engineering Tower, a 1-Gb campus uplink drops to half duplex after a transceiver change while both devices report carrier. Which diagnostic comparison would distinguish this fault from nearby mechanisms?

  1. Inspect management frames for authentication association rejection status and security mismatch.
  2. Inspect per-port tag membership and tagged packet captures at the failing VLAN boundary.
  3. Compare operational speed duplex FCS errors and auto-negotiation on each side of the link.
  4. Inspect EAPOL start identity exchange RADIUS decision and authenticated port status.

Explanation

Correct Answer

C:

For Engineering Tower, the decisive mechanism is Ethernet negotiation and duplex. 802.3 physical link negotiation precedes Layer 2 and Layer 3 service validation. Compare operational speed duplex FCS errors and auto-negotiation on each side of the link is the most direct way to isolate this particular failure before making a change.

Incorrect Answers

A:

This is relevant to 802.11 association sequence, where 802.11 discovery and association occur before user traffic can be successfully forwarded In the Engineering Tower case, Those observations could be normal while the stated fault persists. The specific mechanism is 802.3 physical link negotiation precedes Layer 2 and Layer 3 service validation

B:

This is relevant to 802.1Q VLAN tagging, where 802.1Q tagging preserves logical broadcast-domain identity over shared Ethernet links In the Engineering Tower case, Those observations could be normal while the stated fault persists. The specific mechanism is 802.3 physical link negotiation precedes Layer 2 and Layer 3 service validation

D:

This is relevant to 802.1X EAPOL versus IP service, where 802.1X is port-based access control; IP configuration occurs after network admission In the Engineering Tower case, Those observations could be normal while the stated fault persists. The specific mechanism is 802.3 physical link negotiation precedes Layer 2 and Layer 3 service validation

Question 173

At Learning Commons, a wired device is placed into the wrong role because RADIUS attributes differ from switch expectations. Which ongoing safeguard best limits the specific risk after rollout?

  1. Version enforcement profiles and test against the deployed switch software.
  2. Avoid shrinking timers purely for perceived security without measuring disruption.
  3. Validate access-switch VLAN availability before rolling out central enforcement changes.
  4. Retain emergency break-glass administration documented and monitored.

Explanation

Correct Answer

A:

For Learning Commons, the decisive mechanism is ClearPass enforcement attributes. An Access-Accept alone does not guarantee the intended authorization role was applied. Version enforcement profiles and test against the deployed switch software is an enduring limitation on the operational risk, not simply a one-time passing test.

Incorrect Answers

B:

This is relevant to Supplicant reauthentication intervals, where wired reauthentication intervals can affect session continuity if handshake timing is inadequate In the Learning Commons case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is an Access-Accept alone does not guarantee the intended authorization role was applied

C:

This is relevant to Dynamic VLAN on wired port, where dynamic VLAN assignment requires compatible RADIUS results and local switch VLAN support In the Learning Commons case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is an Access-Accept alone does not guarantee the intended authorization role was applied

D:

This is relevant to TACACS+ admin AAA distinction, where administrative command authorization and client-port 802.1X solve different AAA problems In the Learning Commons case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is an Access-Accept alone does not guarantee the intended authorization role was applied

Question 174

At North Residence, a busy office reuses channels and some radios report high neighboring-BSS interference. Which controlled configuration is most likely to restore the required service?

  1. Plan nonoverlapping channel sets appropriate to the country and band.
  2. Perform an active site survey covering attenuation interference and realistic client density.
  3. Apply an RF plan with reasonable channel reuse and channel width for expected density.
  4. Evaluate supported BSS coloring and spatial reuse with RF survey context.

Explanation

Correct Answer

D:

For North Residence, the decisive mechanism is BSS coloring and spatial reuse. 802.11ax BSS coloring assists differentiation of overlapping transmissions under constraints. Evaluate supported BSS coloring and spatial reuse with RF survey context establishes the needed configuration in the case rather than merely measuring a symptom.

Incorrect Answers

A:

This is relevant to Adjacent-channel overlap, where adjacent-channel overlap can corrupt transmissions without the coordination of co-channel sharing In the North Residence case, Changing that neighboring feature does not implement the missing function. The specific mechanism is 802.11ax BSS coloring assists differentiation of overlapping transmissions under constraints

B:

This is relevant to RF predictive versus active survey, where predictive RF planning does not replace measured real-world attenuation and utilization In the North Residence case, Changing that neighboring feature does not implement the missing function. The specific mechanism is 802.11ax BSS coloring assists differentiation of overlapping transmissions under constraints

C:

This is relevant to Co-channel contention, where co-channel APs share contention airtime even if their signals are individually strong In the North Residence case, Changing that neighboring feature does not implement the missing function. The specific mechanism is 802.11ax BSS coloring assists differentiation of overlapping transmissions under constraints

Question 175

At New Teaching Block, an IoT device starts offering leases that override the authorized corporate DHCP scope. What operational rule should remain in place for later changes?

  1. Never expand a trunk to all VLANs merely to resolve one missing segment.
  2. Deny unapproved client VLAN changes and review port moves before deployment.
  3. Document trusted uplink changes and review replacement switch ports.
  4. Guard against arbitrary untrusted client VLAN tagging on shared ports.

Explanation

Correct Answer

C:

For New Teaching Block, the decisive mechanism is DHCP snooping trust boundary. DHCP snooping prevents DHCP-server responses from untrusted ports. Document trusted uplink changes and review replacement switch ports is an enduring limitation on the operational risk, not simply a one-time passing test.

Incorrect Answers

A:

This is relevant to Tagged trunk allowlist, where a VLAN trunk forwards only permitted tagged VLANs and its native VLAN according to configuration In the New Teaching Block case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is dHCP snooping prevents DHCP-server responses from untrusted ports

B:

This is relevant to Access VLAN classification, where an access port carries untagged frames in one configured access VLAN In the New Teaching Block case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is dHCP snooping prevents DHCP-server responses from untrusted ports

D:

This is relevant to Voice VLAN LLDP-MED, where lLDP-MED can advertise voice-network attributes while the switch enforces separate VLAN policies In the New Teaching Block case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is dHCP snooping prevents DHCP-server responses from untrusted ports

Question 176

At Learning Commons, a newly created IoT VLAN 370 lacks a Layer 3 gateway on the access distribution switch. What operational rule should remain in place for later changes?

  1. Use controlled serial-number ownership checks and avoid blindly claiming unknown devices.
  2. Avoid duplicate gateway addresses and record route/policy ownership.
  3. Treat AP port changes as staged network access changes rather than bypassing admission.
  4. Assess roaming and segmentation impacts before changing WLAN forwarding mode.

Explanation

Correct Answer

B:

For Learning Commons, the decisive mechanism is SVI gateway provisioning. An SVI connects a VLAN broadcast domain to Layer 3 routing on a capable switch. Avoid duplicate gateway addresses and record route/policy ownership is an enduring limitation on the operational risk, not simply a one-time passing test.

Incorrect Answers

A:

This is relevant to Central device onboarding, where cloud inventory association and device management connectivity are separate onboarding requirements In the Learning Commons case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is an SVI connects a VLAN broadcast domain to Layer 3 routing on a capable switch

C:

This is relevant to AP uplink physical mapping, where aP service onboarding depends on both physical power and the upstream management network In the Learning Commons case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is an SVI connects a VLAN broadcast domain to Layer 3 routing on a capable switch

D:

This is relevant to Bridge versus tunneled WLAN traffic, where bridge SSIDs forward locally; tunneled SSIDs use the gateway data path for policy In the Learning Commons case, A precaution for another failure mode is not the enduring boundary needed here. The specific mechanism is an SVI connects a VLAN broadcast domain to Layer 3 routing on a capable switch

Question 177

At Research Hub, a guest WLAN client receives an employee-network IP address after SSID mapping changes. Which AOS-CX or Aruba networking design choice resolves this specific dependency?

  1. Trace VLAN classification DHCP relay/server route and lease scope in sequence.
  2. Correct SSID-to-VLAN and switch trunk membership for the intended segment.
  3. Review the specific ClearPass service match authentication source and TLS decision.
  4. Examine optics cabling transceiver support and duplex/speed at both ends before changing routes.

Explanation

Correct Answer

B:

For Research Hub, the decisive mechanism is Wrong VLAN mapping. WLAN-to-wired mapping errors can appear as a DHCP or authorization defect. Correct SSID-to-VLAN and switch trunk membership for the intended segment establishes the needed configuration in the case rather than merely measuring a symptom.

Incorrect Answers

A:

This is relevant to DHCP address-acquisition failure, where network authorization and DHCP allocation are separate stages requiring their own diagnostics In the Research Hub case, Changing that neighboring feature does not implement the missing function. The specific mechanism is wLAN-to-wired mapping errors can appear as a DHCP or authorization defect

C:

This is relevant to RADIUS Access-Reject root cause, where an explicit RADIUS reject can come from credential validation or authorization policy In the Research Hub case, Changing that neighboring feature does not implement the missing function. The specific mechanism is wLAN-to-wired mapping errors can appear as a DHCP or authorization defect

D:

This is relevant to Physical-link errors, where layer 1/2 corruption can degrade packets even though link status remains up In the Research Hub case, Changing that neighboring feature does not implement the missing function. The specific mechanism is wLAN-to-wired mapping errors can appear as a DHCP or authorization defect

Question 178

At Technology Center, multicast traffic floods low-rate wireless airtime during a live classroom presentation. What targeted evidence should the network engineer collect first?

  1. Inspect group subscriptions multicast airtime and converted frame counts.
  2. Inspect client WMM capability TID mapping and AP access-category statistics.
  3. Inspect queue mappings weights and actual dropped/served traffic.
  4. Inspect input DSCP markings trust state and egress queue classification.

Explanation

Correct Answer

A:

For Technology Center, the decisive mechanism is Multicast-to-unicast tradeoff. Multicast-to-unicast can improve delivery to small receiver groups but adds per-recipient work. Inspect group subscriptions multicast airtime and converted frame counts is the most direct way to isolate this particular failure before making a change.

Incorrect Answers

B:

This is relevant to WMM access categories, where 802.11e WMM prioritizes wireless contention via different access categories In the Technology Center case, Those observations could be normal while the stated fault persists. The specific mechanism is multicast-to-unicast can improve delivery to small receiver groups but adds per-recipient work

C:

This is relevant to Strict priority queue use, where priority scheduling affects service latency but requires careful queue sizing In the Technology Center case, Those observations could be normal while the stated fault persists. The specific mechanism is multicast-to-unicast can improve delivery to small receiver groups but adds per-recipient work

D:

This is relevant to DSCP trust boundary, where qoS trust boundaries determine which received packet markings affect forwarding priority In the Technology Center case, Those observations could be normal while the stated fault persists. The specific mechanism is multicast-to-unicast can improve delivery to small receiver groups but adds per-recipient work

Question 179

At Transit Operations Center, a distribution ABR advertises overly broad summary and blackholes an unallocated subnet. What targeted evidence should the network engineer collect first?

  1. Examine summary LSAs and reachability of all covered more-specific prefixes.
  2. Examine VRRP advertisements gateway owner and virtual MAC state.
  3. Examine route table recursive next-hop resolution and ARP reachability.
  4. Examine IPv6 link-local neighbors OSPFv3 interface area and router ID.

Explanation

Correct Answer

A:

For Transit Operations Center, the decisive mechanism is OSPF area aggregation. OSPF area summarization reduces route detail but can hide gaps in address plans. Inspect summary LSAs and reachability of all covered more-specific prefixes is the most direct way to isolate this particular failure before making a change.

Incorrect Answers

B:

This is relevant to First-hop gateway election, where VRRP abstracts the default gateway across eligible routing devices In the Transit Operations Center case, Those observations could be normal while the stated fault persists. The specific mechanism is oSPF area summarization reduces route detail but can hide gaps in address plans

C:

This is relevant to Static route next hop, where a static route only forwards as intended when its next hop can be resolved In the Transit Operations Center case, Those observations could be normal while the stated fault persists. The specific mechanism is oSPF area summarization reduces route detail but can hide gaps in address plans

D:

This is relevant to IPv6 OSPFv3 adjacency, where oSPFv3 exchanges IPv6 routing information through a separately configured protocol process In the Transit Operations Center case, Those observations could be normal while the stated fault persists. The specific mechanism is oSPF area summarization reduces route detail but can hide gaps in address plans

Question 180

At Riverside Building, a campus route policy should treat tagged partner prefixes differently from ordinary routes. What targeted evidence should the network engineer collect first?

  1. Inspect received community attributes and route-map sequence hits.
  2. Inspect received hello timers and neighbor reset reasons.
  3. Inspect DBD neighbor events DR election and interface OSPF mode.
  4. Inspect OSPF hello packet area values network type and adjacency state.

Explanation

Correct Answer

A:

For Riverside Building, the decisive mechanism is BGP community route policy. BGP communities are policy labels requiring an explicit matching route policy. Inspect received community attributes and route-map sequence hits is the most direct way to isolate this particular failure before making a change.

Incorrect Answers

B:

This is relevant to OSPF hello and dead timers, where oSPF timer mismatches can prevent reliable adjacency even when IP connectivity exists In the Riverside Building case, Those observations could be normal while the stated fault persists. The specific mechanism is bGP communities are policy labels requiring an explicit matching route policy

C:

This is relevant to OSPF network type, where oSPF network type affects hello behavior and DR election on multiaccess segments In the Riverside Building case, Those observations could be normal while the stated fault persists. The specific mechanism is bGP communities are policy labels requiring an explicit matching route policy

D:

This is relevant to OSPF area membership, where oSPF neighbors on a link must agree on essential area and protocol parameters In the Riverside Building case, Those observations could be normal while the stated fault persists. The specific mechanism is bGP communities are policy labels requiring an explicit matching route policy