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HP HPE7-A01 Practice Test 58

Question 570

A data-center access VRF uses route leaking to reach a shared DNS resolver, but clients can reach unrelated server subnets. Which misconception is most likely to obstruct a correct fix?

  1. Set an unconditional default advertisement and assume the internet never fails
  2. Assume one large TCP flow must be split evenly across every ECMP next hop
  3. Import the entire server VRF into every client VRF to simplify name resolution
  4. Adjust the new core's interface bandwidth and assume the shorter prefix becomes preferred

Explanation

Correct Answer

C:

Overbroad route leaking expands lateral reachability. Shared services need narrow reachability rather than broadly merged tables.

Incorrect Answers

A:

Peers may blackhole all outbound traffic through a dead gateway. In this situation, overbroad route leaking expands lateral reachability.

B:

Ordinary per-flow balancing can keep that connection on a single path. By contrast, overbroad route leaking expands lateral reachability.

D:

Link speed does not override destination specificity. It would not resolve the documented symptom; overbroad route leaking expands lateral reachability.

Question 571

A data-center access VRF uses route leaking to reach a shared DNS resolver, but clients can reach unrelated server subnets. What precaution is most important before the change is expanded?

  1. Document resolver dependencies and request owner review of future shared routes
  2. Verify loss tolerance before enabling aggressive detection on production links
  3. Validate inbound failover and provider filtering before changing advertisements
  4. Limit permitted prefixes and authenticate the boundary where supported

Explanation

Correct Answer

A:

A minimal import list is easier to audit. Both results confirm correct import scope.

Incorrect Answers

B:

BFD settings must not convert transient jitter into route outages. It would not resolve the documented symptom; a minimal import list is easier to audit.

C:

Traffic engineering can be affected by external policies. By contrast, a minimal import list is easier to audit.

D:

Successful peering must not imply unrestricted route exchange. The relevant technical distinction is that a minimal import list is easier to audit.

Question 572

A routed campus uses a default static route whose next hop stays connected but the internet path beyond it fails. Which configuration decision most directly resolves the situation?

  1. Use an approved tracked-route or dynamic failover design based on real reachability
  2. Inspect reciprocal static/dynamic routes and correct the forwarding cycle
  3. Use an explicit outbound export filter for the eBGP session
  4. Apply a reviewed inbound prefix list or route-map filter for that neighbor

Explanation

Correct Answer

A:

Interface carrier is not proof that a remote service path works. A controlled fault demonstrates correct preference change.

Incorrect Answers

B:

Mutually pointing defaults can circulate packets until their TTL expires. The relevant technical distinction is that interface carrier is not proof that a remote service path works.

C:

Export boundaries protect internal subnets from accidental public announcement. Here, however, interface carrier is not proof that a remote service path works.

D:

Import policy prevents unwanted external reachability information. By contrast, interface carrier is not proof that a remote service path works.

Question 573

A routed campus uses a default static route whose next hop stays connected but the internet path beyond it fails. Which check most directly demonstrates the desired network behavior?

  1. Induce upstream loss and verify the failed route is withdrawn and backup installed
  2. Trace a test session in both directions and check the destination route table
  3. Inspect both VRF tables and prove a denied guest-management session is blocked
  4. Inspect active and candidate routes with their distance and metric

Explanation

Correct Answer

A:

A controlled fault demonstrates correct preference change. Interface carrier is not proof that a remote service path works.

Incorrect Answers

B:

The missing return entry reveals why clients see timeouts. In this situation, a controlled fault demonstrates correct preference change.

C:

Routing isolation must be tested on actual source and destination pairs. The relevant technical distinction is that a controlled fault demonstrates correct preference change.

D:

The selected entry shows which preference rule applied. Here, however, a controlled fault demonstrates correct preference change.

Question 574

A routed campus uses a default static route whose next hop stays connected but the internet path beyond it fails. Which assumption would be most misleading when investigating this situation?

  1. Assume a reachable next-hop MAC implies the ISP can route every external prefix
  2. Change BGP local preference to repair OSPF database-description rejection
  3. Increase administrative distance to force a router to enter Full state
  4. Tune local preference before confirming the BGP TCP session can open

Explanation

Correct Answer

A:

The failure may lie beyond the local Ethernet neighbor. Interface carrier is not proof that a remote service path works.

Incorrect Answers

B:

BGP attributes are unrelated to OSPF MTU negotiation. It would not resolve the documented symptom; the failure may lie beyond the local Ethernet neighbor.

C:

Route preference cannot repair neighbor negotiation. Here, however, the failure may lie beyond the local Ethernet neighbor.

D:

Route attributes matter only after the session exchanges routes. In this situation, the failure may lie beyond the local Ethernet neighbor.

Question 575

A routed campus uses a default static route whose next hop stays connected but the internet path beyond it fails. Which safeguard best reduces the deployment risk in this case?

  1. Specify probe targets and alerting that represent actual business egress
  2. Document which source is authoritative before changing distance globally
  3. Test both approved and prohibited departmental flows after enabling routing
  4. Validate approved prefixes and loop-prevention behavior before enabling new boundaries

Explanation

Correct Answer

A:

Bad probes can falsely mark a healthy default unavailable. A controlled fault demonstrates correct preference change.

Incorrect Answers

B:

A blanket change can redirect many unrelated prefixes. In this situation, bad probes can falsely mark a healthy default unavailable.

C:

Routing changes must not accidentally expose restricted hosts. By contrast, bad probes can falsely mark a healthy default unavailable.

D:

A small filter error can affect multiple sites. It would not resolve the documented symptom; bad probes can falsely mark a healthy default unavailable.

Question 576

A network team deploys a new core and experiences a routing loop between the old and new default gateways. What is the most appropriate first technical change?

  1. Configure appropriate IPv6 router advertisements on the routed campus interface
  2. Check next-hop resolution, best-path flags and competing route distance
  3. Inspect reciprocal static/dynamic routes and correct the forwarding cycle
  4. Correct route import/export rules and preserve the intended default per context

Explanation

Correct Answer

C:

Mutually pointing defaults can circulate packets until their TTL expires. Repeating hops expose a path loop rather than a simple deny.

Incorrect Answers

A:

Clients typically learn IPv6 default-router information from RAs. The relevant technical distinction is that mutually pointing defaults can circulate packets until their TTL expires.

B:

Received control-plane information may not become the installed route. It would not resolve the documented symptom; mutually pointing defaults can circulate packets until their TTL expires.

D:

Imported defaults can redirect trusted traffic toward a less controlled network. By contrast, mutually pointing defaults can circulate packets until their TTL expires.

Question 577

A guest wireless role can reach an internal payroll database despite using a separate SSID. Which TWO actions together implement the required change and verify that it works? Choose TWO.

  1. Apply the approved guest isolation and deny internal subnet access at the enforcement boundary
  2. Verify the certificate chain, client identity, extended key usage and RADIUS trust
  3. Keep CRL or OCSP dependencies available and monitor their failures
  4. Test denied payroll access and permitted guest internet sessions after authentication
  5. Move administration to a restricted management segment and enforce access control

Explanation

Correct Answers

A:

An SSID name alone is not a security policy. Negative and positive flow checks verify actual role enforcement.

D:

Negative and positive flow checks verify actual role enforcement. An SSID name alone is not a security policy.

Incorrect Answers

B:

Mutual certificate authentication depends on compatible credential validation. Here, however, an SSID name alone is not a security policy.

C:

Revocation infrastructure can become an availability dependency. The relevant technical distinction is that a template error can expose protected systems at scale.

E:

Management protocols should not be exposed to untrusted clients. By contrast, an SSID name alone is not a security policy.

Question 578

A guest wireless role can reach an internal payroll database despite using a separate SSID. What should the team inspect to confirm the result?

  1. Test denied payroll access and permitted guest internet sessions after authentication
  2. Inject a controlled rogue offer and verify it is rejected while legitimate leases succeed
  3. Observe control-plane load and violation counters during a bounded test
  4. Compare accepted legitimate ARP and rejected spoofed frames in violation logs

Explanation

Correct Answer

A:

Negative and positive flow checks verify actual role enforcement. An SSID name alone is not a security policy.

Incorrect Answers

B:

Functionality and protection must both pass. The relevant technical distinction is that negative and positive flow checks verify actual role enforcement.

C:

Measured protection must retain required network control traffic. In this situation, negative and positive flow checks verify actual role enforcement.

D:

The control should distinguish authentic bindings from forged claims. Here, however, negative and positive flow checks verify actual role enforcement.

Question 579

A guest wireless role can reach an internal payroll database despite using a separate SSID. Which misconception is most likely to obstruct a correct fix?

  1. Use MAC filtering as the sole defense against a capable attacker
  2. Place all departments into one open VLAN because they share a printer service
  3. Assume a single successful 802.1X exchange validates any downstream MAC learned later
  4. Assume hiding the guest SSID is sufficient to isolate internal services

Explanation

Correct Answer

D:

SSID visibility has no authority over network routing or policy. An SSID name alone is not a security policy.

Incorrect Answers

A:

MAC addresses can be observed and impersonated. In this situation, sSID visibility has no authority over network routing or policy.

B:

Shared resources do not require unrestricted lateral access. Here, however, sSID visibility has no authority over network routing or policy.

C:

A shared physical port may carry multiple hosts. It would not resolve the documented symptom; sSID visibility has no authority over network routing or policy.

Question 580

A guest wireless role can reach an internal payroll database despite using a separate SSID. What precaution is most important before the change is expanded?

  1. Include a false-positive appeal and restore procedure
  2. Validate thresholds for legitimate discovery and routing messages
  3. Require explicit deny checks whenever guest roles or VLAN mappings change
  4. Keep the authorized DHCP relay/server paths documented and monitored

Explanation

Correct Answer

C:

A template error can expose protected systems at scale. Negative and positive flow checks verify actual role enforcement.

Incorrect Answers

A:

Quarantine actions must be reversible after investigation. It would not resolve the documented symptom; a template error can expose protected systems at scale.

B:

Overly strict controls can destabilize the network itself. By contrast, a template error can expose protected systems at scale.

D:

Incorrect trust mapping can cause a general addressing outage. In this situation, a template error can expose protected systems at scale.

HPE Network Campus Access Professional (HPE7-A01) Practice Tests

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