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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?
- Set an unconditional default advertisement and assume the internet never fails
- Assume one large TCP flow must be split evenly across every ECMP next hop
- Import the entire server VRF into every client VRF to simplify name resolution
- 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?
- Document resolver dependencies and request owner review of future shared routes
- Verify loss tolerance before enabling aggressive detection on production links
- Validate inbound failover and provider filtering before changing advertisements
- 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?
- Use an approved tracked-route or dynamic failover design based on real reachability
- Inspect reciprocal static/dynamic routes and correct the forwarding cycle
- Use an explicit outbound export filter for the eBGP session
- 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?
- Induce upstream loss and verify the failed route is withdrawn and backup installed
- Trace a test session in both directions and check the destination route table
- Inspect both VRF tables and prove a denied guest-management session is blocked
- 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?
- Assume a reachable next-hop MAC implies the ISP can route every external prefix
- Change BGP local preference to repair OSPF database-description rejection
- Increase administrative distance to force a router to enter Full state
- 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?
- Specify probe targets and alerting that represent actual business egress
- Document which source is authoritative before changing distance globally
- Test both approved and prohibited departmental flows after enabling routing
- 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?
- Configure appropriate IPv6 router advertisements on the routed campus interface
- Check next-hop resolution, best-path flags and competing route distance
- Inspect reciprocal static/dynamic routes and correct the forwarding cycle
- 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.
- Apply the approved guest isolation and deny internal subnet access at the enforcement boundary
- Verify the certificate chain, client identity, extended key usage and RADIUS trust
- Keep CRL or OCSP dependencies available and monitor their failures
- Test denied payroll access and permitted guest internet sessions after authentication
- 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?
- Test denied payroll access and permitted guest internet sessions after authentication
- Inject a controlled rogue offer and verify it is rejected while legitimate leases succeed
- Observe control-plane load and violation counters during a bounded test
- 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?
- Use MAC filtering as the sole defense against a capable attacker
- Place all departments into one open VLAN because they share a printer service
- Assume a single successful 802.1X exchange validates any downstream MAC learned later
- 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?
- Include a false-positive appeal and restore procedure
- Validate thresholds for legitimate discovery and routing messages
- Require explicit deny checks whenever guest roles or VLAN mappings change
- 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