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Juniper JN0-364 Practice Test 10

Question 90

A provider network team identifies this situation: A new higher-priority router joins a stable OSPF broadcast segment. What verification evidence MOST CLEARLY demonstrates the solution is working? Choose ONE best answer.

  1. DR changes only as defined by normal election or controlled topology events
  2. The problem is narrowed to origination, flooding or policy rather than basic adjacency
  3. The adjacency reaches Full after resolving the actual mismatch
  4. The diagnosed signaling fault is corrected without changing unrelated customer routing

Explanation

Correct Answer

A:

DR changes only as defined by normal election or controlled topology events is the best operational verification evidence for this Junos service-provider case: A new higher-priority router joins a stable OSPF broadcast segment. Technical basis: OSPF broadcast networks elect DR and BDR; priority influences election, and a zero-priority node is ineligible.

Incorrect Answers

B:

The problem is narrowed to origination, flooding or policy rather than basic adjacency is relevant to the different engineering topic "OSPF LSDB synchronization", but it is not the most directly supported operational verification evidence for this precise case: A new higher-priority router joins a stable OSPF broadcast segment. the best answer here is: DR changes only as defined by normal election or controlled topology events.

C:

The adjacency reaches Full after resolving the actual mismatch is relevant to the different engineering topic "OSPF two-way versus full neighbors", but it is not the most directly supported operational verification evidence for this precise case: A new higher-priority router joins a stable OSPF broadcast segment. the best answer here is: DR changes only as defined by normal election or controlled topology events.

D:

That option concerns RSVP LSP signaling. OSPF broadcast networks elect DR and BDR; priority influences election, and a zero-priority node is ineligible.

Question 91

A Junos service-provider engineer is reviewing this operational case: On a shared transit VLAN, two non-DR routers show OSPF state 2Way. Which technical approach MOST DIRECTLY addresses the issue? Select ONE best answer.

  1. Interpret type-one Router LSAs as router-local link information scoped to an OSPF area
  2. Use GRE to carry supported network payload protocols across a reachable IP underlay
  3. Interpret the 2Way and Full states according to OSPF network type and DR roles
  4. Advertise intended connected prefixes without forming unwanted OSPF neighbors on customer-facing interfaces

Explanation

Correct Answer

C:

Interpret the 2Way and Full states according to OSPF network type and DR roles is the best technical design or decision for this Junos service-provider case: On a shared transit VLAN, two non-DR routers show OSPF state 2Way. Technical basis: A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

Incorrect Answers

A:

Interpret type-one Router LSAs as router-local link information scoped to an OSPF area is relevant to the different engineering topic "Router-LSA type-one interpretation", but it is not the most directly supported technical design or decision for this precise case: On a shared transit VLAN, two non-DR routers show OSPF state 2Way. the best answer here is: Interpret the 2Way and Full states according to OSPF network type and DR roles.

B:

That option concerns GRE encapsulation purpose. A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

D:

Advertise intended connected prefixes without forming unwanted OSPF neighbors on customer-facing interfaces is relevant to the different engineering topic "OSPF passive-interface and export policy", but it is not the most directly supported technical design or decision for this precise case: On a shared transit VLAN, two non-DR routers show OSPF state 2Way. the best answer here is: Interpret the 2Way and Full states according to OSPF network type and DR roles.

Question 92

A Junos service-provider engineer is reviewing this operational case: On a shared transit VLAN, two non-DR routers show OSPF state 2Way. What specific configuration or diagnostic action BEST implements the intended response? Select ONE best answer.

  1. Inspect database description exchange and relevant mismatch counters
  2. Set qualified-next-hop preference intentionally and verify both gateway reachabilities
  3. Set its OSPF interface priority to zero
  4. Check the DR/BDR roles and whether both maintain Full adjacency to the DR set

Explanation

Correct Answer

D:

Check the DR/BDR roles and whether both maintain Full adjacency to the DR set is the best implementation and troubleshooting step for this Junos service-provider case: On a shared transit VLAN, two non-DR routers show OSPF state 2Way. Technical basis: A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

Incorrect Answers

A:

Inspect database description exchange and relevant mismatch counters is relevant to the different engineering topic "OSPF LSDB synchronization", but it is not the most directly supported implementation and troubleshooting step for this precise case: On a shared transit VLAN, two non-DR routers show OSPF state 2Way. the best answer here is: Check the DR/BDR roles and whether both maintain Full adjacency to the DR set.

B:

That option concerns Qualified-next-hop selection. A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

C:

That option concerns OSPF DR/BDR priority election. A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

Question 93

A Junos service-provider engineer is reviewing this operational case: On a shared transit VLAN, two non-DR routers show OSPF state 2Way. Which observation would MOST RELIABLY verify the intended outcome? Select ONE best answer.

  1. The neighbor sees exactly the intended advertised prefixes
  2. The resulting states match the expected broadcast design
  3. The advertised links match the router's area-local topology
  4. The peers advance to Full and have consistent eligible LSDB entries

Explanation

Correct Answer

B:

The resulting states match the expected broadcast design is the best operational verification evidence for this Junos service-provider case: On a shared transit VLAN, two non-DR routers show OSPF state 2Way. Technical basis: A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

Incorrect Answers

A:

That option concerns BGP outbound advertisement policy. A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

C:

The advertised links match the router's area-local topology is relevant to the different engineering topic "Router-LSA type-one interpretation", but it is not the most directly supported operational verification evidence for this precise case: On a shared transit VLAN, two non-DR routers show OSPF state 2Way. the best answer here is: The resulting states match the expected broadcast design.

D:

The peers advance to Full and have consistent eligible LSDB entries is relevant to the different engineering topic "OSPF LSDB synchronization", but it is not the most directly supported operational verification evidence for this precise case: On a shared transit VLAN, two non-DR routers show OSPF state 2Way. the best answer here is: The resulting states match the expected broadcast design.

Question 94

A provider network team identifies this situation: A dedicated core-to-core point-to-point OSPF link stays in ExStart. Which engineering decision BEST fits the stated requirement? Choose ONE best answer.

  1. Account for implicit-null advertisement and penultimate-hop popping when validating an MPLS egress
  2. Advertise intended connected prefixes without forming unwanted OSPF neighbors on customer-facing interfaces
  3. Interpret the 2Way and Full states according to OSPF network type and DR roles
  4. Apply appropriate OSPF interface costs and validate expected shortest paths

Explanation

Correct Answer

C:

Interpret the 2Way and Full states according to OSPF network type and DR roles is the best technical design or decision for this Junos service-provider case: A dedicated core-to-core point-to-point OSPF link stays in ExStart. Technical basis: A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

Incorrect Answers

A:

That option concerns Penultimate-hop popping. A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

B:

Advertise intended connected prefixes without forming unwanted OSPF neighbors on customer-facing interfaces is relevant to the different engineering topic "OSPF passive-interface and export policy", but it is not the most directly supported technical design or decision for this precise case: A dedicated core-to-core point-to-point OSPF link stays in ExStart. the best answer here is: Interpret the 2Way and Full states according to OSPF network type and DR roles.

D:

Apply appropriate OSPF interface costs and validate expected shortest paths is relevant to the different engineering topic "OSPF interface metric selection", but it is not the most directly supported technical design or decision for this precise case: A dedicated core-to-core point-to-point OSPF link stays in ExStart. the best answer here is: Interpret the 2Way and Full states according to OSPF network type and DR roles.

Question 95

A provider network team identifies this situation: A dedicated core-to-core point-to-point OSPF link stays in ExStart. Which implementation or troubleshooting step is MOST APPROPRIATE here? Choose ONE best answer.

  1. Review ABR and backbone reachability before changing interface metrics
  2. Enable IS-IS on the appropriate interface and check transport-level behavior
  3. Compare MTU, network type and DBD negotiation before enabling any workaround
  4. Review the LSDB for the advertisement before changing forwarding entries

Explanation

Correct Answer

C:

Compare MTU, network type and DBD negotiation before enabling any workaround is the best implementation and troubleshooting step for this Junos service-provider case: A dedicated core-to-core point-to-point OSPF link stays in ExStart. Technical basis: A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

Incorrect Answers

A:

That option concerns OSPF backbone membership. A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

B:

That option concerns IS-IS hello adjacency negotiation. A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

D:

Review the LSDB for the advertisement before changing forwarding entries is relevant to the different engineering topic "OSPF LSDB synchronization", but it is not the most directly supported implementation and troubleshooting step for this precise case: A dedicated core-to-core point-to-point OSPF link stays in ExStart. the best answer here is: Compare MTU, network type and DBD negotiation before enabling any workaround.

Question 96

A provider network team identifies this situation: A dedicated core-to-core point-to-point OSPF link stays in ExStart. What verification evidence MOST CLEARLY demonstrates the solution is working? Choose ONE best answer.

  1. The route resolves over the least-cost eligible topology
  2. The adjacency reaches Full after resolving the actual mismatch
  3. The actual interface configuration or neighbor failure is isolated without unrelated BGP changes
  4. The forwarding label is consistent with the resolved segment rather than a guessed number

Explanation

Correct Answer

B:

The adjacency reaches Full after resolving the actual mismatch is the best operational verification evidence for this Junos service-provider case: A dedicated core-to-core point-to-point OSPF link stays in ExStart. Technical basis: A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

Incorrect Answers

A:

The route resolves over the least-cost eligible topology is relevant to the different engineering topic "OSPF interface metric selection", but it is not the most directly supported operational verification evidence for this precise case: A dedicated core-to-core point-to-point OSPF link stays in ExStart. the best answer here is: The adjacency reaches Full after resolving the actual mismatch.

C:

That option concerns OSPF operational troubleshooting. A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

D:

That option concerns Segment-routing MPLS prefix SIDs. A 2Way relationship between DROther routers can be normal on broadcast media while point-to-point neighbors should reach Full.

Question 97

A Junos service-provider engineer is reviewing this operational case: An OSPF adjacency is stuck at Exchange after a core device replacement. Which technical approach MOST DIRECTLY addresses the issue? Select ONE best answer.

  1. Use LSA exchange and database views to distinguish neighbor formation from link-state synchronization
  2. Place interfaces in the correct OSPF area and maintain intended backbone connectivity
  3. Use graceful Routing Engine switchover where supported to preserve forwarding across a control-plane transition
  4. Assign stable distinct OSPF router identifiers across the participating topology

Explanation

Correct Answer

A:

Use LSA exchange and database views to distinguish neighbor formation from link-state synchronization is the best technical design or decision for this Junos service-provider case: An OSPF adjacency is stuck at Exchange after a core device replacement. Technical basis: OSPF neighbors exchange database descriptions and LSAs before computing consistent SPF state.

Incorrect Answers

B:

Place interfaces in the correct OSPF area and maintain intended backbone connectivity is relevant to the different engineering topic "OSPF backbone membership", but it is not the most directly supported technical design or decision for this precise case: An OSPF adjacency is stuck at Exchange after a core device replacement. the best answer here is: Use LSA exchange and database views to distinguish neighbor formation from link-state synchronization.

C:

That option concerns GRES Routing Engine failover. OSPF neighbors exchange database descriptions and LSAs before computing consistent SPF state.

D:

Assign stable distinct OSPF router identifiers across the participating topology is relevant to the different engineering topic "OSPF router-ID uniqueness", but it is not the most directly supported technical design or decision for this precise case: An OSPF adjacency is stuck at Exchange after a core device replacement. the best answer here is: Use LSA exchange and database views to distinguish neighbor formation from link-state synchronization.

Question 98

A Junos service-provider engineer is reviewing this operational case: An OSPF adjacency is stuck at Exchange after a core device replacement. What specific configuration or diagnostic action BEST implements the intended response? Select ONE best answer.

  1. Configure the supported minimum-links threshold and monitor member state
  2. Compare supported hello and dead intervals and interface state
  3. Inspect database description exchange and relevant mismatch counters
  4. Check the network LSA originator and attached router list

Explanation

Correct Answer

C:

Inspect database description exchange and relevant mismatch counters is the best implementation and troubleshooting step for this Junos service-provider case: An OSPF adjacency is stuck at Exchange after a core device replacement. Technical basis: OSPF neighbors exchange database descriptions and LSAs before computing consistent SPF state.

Incorrect Answers

A:

That option concerns Aggregated-Ethernet minimum links. OSPF neighbors exchange database descriptions and LSAs before computing consistent SPF state.

B:

That option concerns OSPF hello/dead agreement. OSPF neighbors exchange database descriptions and LSAs before computing consistent SPF state.

D:

Check the network LSA originator and attached router list is relevant to the different engineering topic "Network-LSA type-two interpretation", but it is not the most directly supported implementation and troubleshooting step for this precise case: An OSPF adjacency is stuck at Exchange after a core device replacement. the best answer here is: Inspect database description exchange and relevant mismatch counters.

Question 99

A Junos service-provider engineer is reviewing this operational case: An OSPF adjacency is stuck at Exchange after a core device replacement. Which observation would MOST RELIABLY verify the intended outcome? Select ONE best answer.

  1. One Full adjacency forms without requiring a LAN DR election
  2. The route client promptly reacts when BFD session Down is confirmed
  3. The peers advance to Full and have consistent eligible LSDB entries
  4. The SPF next hop prefers the intended lower-cost path

Explanation

Correct Answer

C:

The peers advance to Full and have consistent eligible LSDB entries is the best operational verification evidence for this Junos service-provider case: An OSPF adjacency is stuck at Exchange after a core device replacement. Technical basis: OSPF neighbors exchange database descriptions and LSAs before computing consistent SPF state.

Incorrect Answers

A:

One Full adjacency forms without requiring a LAN DR election is relevant to the different engineering topic "OSPF interface network type", but it is not the most directly supported operational verification evidence for this precise case: An OSPF adjacency is stuck at Exchange after a core device replacement. the best answer here is: The peers advance to Full and have consistent eligible LSDB entries.

B:

That option concerns BFD rapid failure detection. OSPF neighbors exchange database descriptions and LSAs before computing consistent SPF state.

D:

That option concerns OSPF interface metric selection. OSPF neighbors exchange database descriptions and LSAs before computing consistent SPF state.

Question 100

A provider network team identifies this situation: A prefix is not learned although both ends have a Full adjacency. Which engineering decision BEST fits the stated requirement? Choose ONE best answer.

  1. Use LSA exchange and database views to distinguish neighbor formation from link-state synchronization
  2. Match the OSPF interface type to the actual link and intended neighbor model
  3. Enable permitted 802.1Q VLAN tags on a trunk only for intended tenant broadcast domains
  4. Recognize a type-two Network LSA generated for an appropriate transit multi-access OSPF network

Explanation

Correct Answer

A:

Use LSA exchange and database views to distinguish neighbor formation from link-state synchronization is the best technical design or decision for this Junos service-provider case: A prefix is not learned although both ends have a Full adjacency. Technical basis: OSPF neighbors exchange database descriptions and LSAs before computing consistent SPF state.

Incorrect Answers

B:

Match the OSPF interface type to the actual link and intended neighbor model is relevant to the different engineering topic "OSPF interface network type", but it is not the most directly supported technical design or decision for this precise case: A prefix is not learned although both ends have a Full adjacency. the best answer here is: Use LSA exchange and database views to distinguish neighbor formation from link-state synchronization.

C:

That option concerns Trunk tagging and VLAN allowlist. OSPF neighbors exchange database descriptions and LSAs before computing consistent SPF state.

D:

Recognize a type-two Network LSA generated for an appropriate transit multi-access OSPF network is relevant to the different engineering topic "Network-LSA type-two interpretation", but it is not the most directly supported technical design or decision for this precise case: A prefix is not learned although both ends have a Full adjacency. the best answer here is: Use LSA exchange and database views to distinguish neighbor formation from link-state synchronization.

Service Provider Routing and Switching, Specialist (JNCIS-SP) (JN0-364) Practice Tests