100% Latest & Updated HP HPE7-A08 Practice Test Questions, Exam Dumps & Verified Answers!
30 Days Free Updates, Instant Download!
Question 520
A router never advances beyond database exchange after a mismatched jumbo-frame setting. Which OSPF dependency deserves testing?
- OSPF authentication mismatch
- OSPF passive-interface mistake
- OSPF interface MTU mismatch
- OSPF failure-driven reconvergence
Explanation
Correct Answer
C:Differing MTUs can be relevant to OSPF adjacency exchange. In some OSPF adjacency cases, mismatched MTU can stall database exchange or neighbor progress.
Incorrect Answers
A:Different authentication settings can prevent accepted OSPF hellos. But this does not address the case requirement to check L3 interface MTU settings.
B:An interface configured passive will not form the expected OSPF neighbor relationship. But this does not address the case requirement to check L3 interface MTU settings.
D:An adjacency loss removes the learned path until alternate routing converges. But this does not address the case requirement to check L3 interface MTU settings.
Question 521
A core route neighbor is silent only on the newly passive interface. What setting is blocking protocol hellos?
- Missing route advertisement
- OSPF passive-interface mistake
- OSPF authentication mismatch
- OSPF interface MTU mismatch
Explanation
Correct Answer
B:Passive setting intentionally avoids OSPF neighbor formation. An interface configured passive will not form the expected OSPF neighbor relationship.
Incorrect Answers
A:A connected prefix may not be included in intended OSPF advertisement or permitted export policy. But this does not address the case requirement to remove unintended passive status on a routed peer interface.
C:Different authentication settings can prevent accepted OSPF hellos. But this does not address the case requirement to remove unintended passive status on a routed peer interface.
D:In some OSPF adjacency cases, mismatched MTU can stall database exchange or neighbor progress. But this does not address the case requirement to remove unintended passive status on a routed peer interface.
Question 522
One local VLAN is absent from every remote route table despite all peers being FULL. What is likely missing?
- OSPF authentication mismatch
- Missing route advertisement
- OSPF failure-driven reconvergence
- OSPF area mismatch
Explanation
Correct Answer
B:Correct prefix advertisement to the OSPF domain. A connected prefix may not be included in intended OSPF advertisement or permitted export policy.
Incorrect Answers
A:Different authentication settings can prevent accepted OSPF hellos. But this does not address the case requirement to diagnose network announcement omission.
C:An adjacency loss removes the learned path until alternate routing converges. But this does not address the case requirement to diagnose network announcement omission.
D:Neighbors connected on one link may fail if area IDs are inconsistent. But this does not address the case requirement to diagnose network announcement omission.
Question 523
New VLAN 55 clients fail DHCP while a central server responds normally to other networks; its gateway has no relay config. What is absent?
- Missing DHCP relay helper
- Missing management VRF route
- Invalid DHCP scope or exclusion
- VRRP role or virtual gateway outage
Explanation
Correct Answer
A:DHCP broadcasts need a relay to reach a remote server. A VLAN gateway without relay cannot deliver local DHCP broadcasts to a remote server.
Incorrect Answers
B:Traffic in a separate VRF cannot use unrelated default routes without a supported route path. But this does not address the case requirement to identify missing DHCP helper.
C:A server may issue wrong network options or have no available addresses. But this does not address the case requirement to identify missing DHCP helper.
D:Loss or split of first-hop virtual gateway service can strand endpoints even with good IP leases. But this does not address the case requirement to identify missing DHCP helper.
Question 524
DHCP works until snooping is enabled on a core trunk carrying valid server replies. What likely blocks it?
- Missing management VRF route
- Untrusted DHCP snooping server port
- Default gateway or mask mismatch
- Invalid DHCP scope or exclusion
Explanation
Correct Answer
B:The real server-facing path may be untrusted. An authentic DHCP offer can be dropped if the server-facing uplink is untrusted.
Incorrect Answers
A:Traffic in a separate VRF cannot use unrelated default routes without a supported route path. But this does not address the case requirement to identify snooping trust misconfiguration.
C:A client with incorrect mask/gateway may communicate locally but not route as expected. But this does not address the case requirement to identify snooping trust misconfiguration.
D:A server may issue wrong network options or have no available addresses. But this does not address the case requirement to identify snooping trust misconfiguration.
Question 525
New laptops receive no lease because the configured pool has no unassigned addresses left. What server-side fault fits?
- VRRP role or virtual gateway outage
- Untrusted DHCP snooping server port
- Invalid DHCP scope or exclusion
- Missing DHCP relay helper
Explanation
Correct Answer
C:DHCP scope exhaustion prevents lease delivery. A server may issue wrong network options or have no available addresses.
Incorrect Answers
A:Loss or split of first-hop virtual gateway service can strand endpoints even with good IP leases. But this does not address the case requirement to identify depleted address allocation.
B:An authentic DHCP offer can be dropped if the server-facing uplink is untrusted. But this does not address the case requirement to identify depleted address allocation.
D:A VLAN gateway without relay cannot deliver local DHCP broadcasts to a remote server. But this does not address the case requirement to identify depleted address allocation.
Question 526
A laptop uses /16 instead of required /24 and treats remote hosts as local ARP targets. What configuration error exists?
- Invalid DHCP scope or exclusion
- Default gateway or mask mismatch
- Missing management VRF route
- VRRP role or virtual gateway outage
Explanation
Correct Answer
B:Wrong client mask leads to incorrect on-link determination. A client with incorrect mask/gateway may communicate locally but not route as expected.
Incorrect Answers
A:A server may issue wrong network options or have no available addresses. But this does not address the case requirement to identify endpoint subnet-mask mismatch.
C:Traffic in a separate VRF cannot use unrelated default routes without a supported route path. But this does not address the case requirement to identify endpoint subnet-mask mismatch.
D:Loss or split of first-hop virtual gateway service can strand endpoints even with good IP leases. But this does not address the case requirement to identify endpoint subnet-mask mismatch.
Question 527
Two VRRP peers disagree on virtual gateway state and users intermittently lose their default gateway. What first-hop issue fits?
- Missing management VRF route
- VRRP role or virtual gateway outage
- Default gateway or mask mismatch
- Invalid DHCP scope or exclusion
Explanation
Correct Answer
B:Virtual router election or health is inconsistent. Loss or split of first-hop virtual gateway service can strand endpoints even with good IP leases.
Incorrect Answers
A:Traffic in a separate VRF cannot use unrelated default routes without a supported route path. But this does not address the case requirement to identify VRRP gateway malfunction.
C:A client with incorrect mask/gateway may communicate locally but not route as expected. But this does not address the case requirement to identify VRRP gateway malfunction.
D:A server may issue wrong network options or have no available addresses. But this does not address the case requirement to identify VRRP gateway malfunction.
Question 528
A management VRF device can ping its local router but cannot reach a remote NTP host, while default VRF has a route. What is missing?
- Missing management VRF route
- VRRP role or virtual gateway outage
- Untrusted DHCP snooping server port
- Invalid DHCP scope or exclusion
Explanation
Correct Answer
A:Routes are separate across VRF tables. Traffic in a separate VRF cannot use unrelated default routes without a supported route path.
Incorrect Answers
B:Loss or split of first-hop virtual gateway service can strand endpoints even with good IP leases. But this does not address the case requirement to identify missing management-context routing.
C:An authentic DHCP offer can be dropped if the server-facing uplink is untrusted. But this does not address the case requirement to identify missing management-context routing.
D:A server may issue wrong network options or have no available addresses. But this does not address the case requirement to identify missing management-context routing.
Question 529
VLAN 90 has an SVI and client broadcast but no DHCP Offer because the server lives elsewhere. What gateway feature should be checked?
- Invalid DHCP scope or exclusion
- Default gateway or mask mismatch
- Missing DHCP relay helper
- VRRP role or virtual gateway outage
Explanation
Correct Answer
C:An IP helper forwards DHCP requests beyond VLAN 90. A VLAN gateway without relay cannot deliver local DHCP broadcasts to a remote server.
Incorrect Answers
A:A server may issue wrong network options or have no available addresses. But this does not address the case requirement to restore missing relay function.
B:A client with incorrect mask/gateway may communicate locally but not route as expected. But this does not address the case requirement to restore missing relay function.
D:Loss or split of first-hop virtual gateway service can strand endpoints even with good IP leases. But this does not address the case requirement to restore missing relay function.
Question 530
A workstation can ping 10.1.8.4 but treats 10.1.9.6 incorrectly due to /16 settings on a /24 LAN. What caused this?
- Missing DHCP relay helper
- Default gateway or mask mismatch
- VRRP role or virtual gateway outage
- Invalid DHCP scope or exclusion
Explanation
Correct Answer
B:The configured prefix length creates an erroneous local-network view. A client with incorrect mask/gateway may communicate locally but not route as expected.
Incorrect Answers
A:A VLAN gateway without relay cannot deliver local DHCP broadcasts to a remote server. But this does not address the case requirement to diagnose endpoint IP addressing mismatch.
C:Loss or split of first-hop virtual gateway service can strand endpoints even with good IP leases. But this does not address the case requirement to diagnose endpoint IP addressing mismatch.
D:A server may issue wrong network options or have no available addresses. But this does not address the case requirement to diagnose endpoint IP addressing mismatch.
HPE Network Switching Professional (HPE7-A08) Practice Tests