McAfee-Secured Website

Exam Code: JN0-650

Exam Name: Enterprise Routing and Switching, Professional (JNCIP-ENT)

Certification Provider: Juniper

Corresponding Certification: JNCIP-ENT

Questions & Answers

100% Juniper JN0-650 Guaranteed Success With Testking Training Materials

Get Real JN0-650 Exam Questions & Expert Verified Answers as Experienced on the Real Exam!

Questions & Answers

107 Questions & Answers with Testing Engine

"Enterprise Routing and Switching, Professional (JNCIP-ENT) Exam", also known as JN0-650 exam, is a Juniper certification exam.

Pass your tests with the always up-to-date JN0-650 Exam Engine. Your JN0-650 training materials keep you at the head of the pack!

Satisfaction Guaranteed

Money Back Guarantee

Testking provides hassle-free money back guarantee with our products. That is because we have 100% trust in the abilities of our professional and experience product team, and our record is a proof of that.

99.6% PASS RATE
Was: $137.49
Now: $124.99

Juniper JN0-650 Practice Test 4

Question 30

A Junos network engineer takes this step: Inspect OSPF neighbor status and interface details with operational show commands. Which outcome most directly follows?

  1. Matching authentication lets correctly authenticated protocol packets participate in adjacency establishment.
  2. The operator can distinguish Down, Init, ExStart, Exchange, and Full adjacency states.
  3. Every router is identified unambiguously in the link-state topology database.
  4. Compatible MTUs remove a common cause of OSPF database-description exchange failures.

Explanation

Correct Answer

B:

This is the direct result of the OSPF adjacency diagnostics decision: The operator can distinguish Down, Init, ExStart, Exchange, and Full adjacency states.

Incorrect Answers

A:

This outcome is associated with OSPF authentication mismatch (Align the supported OSPF authentication method and credentials across the link.), not the specified action.

C:

This outcome is associated with Duplicate router IDs (Assign a unique stable router ID to each OSPF speaker.), not the specified action.

D:

This outcome is associated with OSPF MTU disagreement (Correct the interface MTU mismatch on the two ends before attempting full database synchronization.), not the specified action.

Question 31

A newly connected router reports no OSPF neighbors despite good interface and IP status, and the operator needs protocol-level evidence. A colleague instead suggests: Align the supported OSPF authentication method and credentials across the link. Which corrective approach most directly addresses the original issue?

  1. Correct the interface MTU mismatch on the two ends before attempting full database synchronization.
  2. Assign a unique stable router ID to each OSPF speaker.
  3. Inspect OSPF neighbor status and interface details with operational show commands.
  4. Align the supported OSPF authentication method and credentials across the link.

Explanation

Correct Answer

C:

This corrective choice addresses OSPF adjacency diagnostics. The operator can distinguish Down, Init, ExStart, Exchange, and Full adjacency states.

Incorrect Answers

A:

That alternative applies to OSPF MTU disagreement instead. Compatible MTUs remove a common cause of OSPF database-description exchange failures.

B:

That alternative applies to Duplicate router IDs instead. Every router is identified unambiguously in the link-state topology database.

D:

That alternative applies to OSPF authentication mismatch instead. Matching authentication lets correctly authenticated protocol packets participate in adjacency establishment.

Question 32

An enterprise network designer recommends: Inspect OSPF neighbor status and interface details with operational show commands. Which situation most clearly calls for this action?

  1. Separate Junos routers in the same OSPF domain accidentally use an identical router ID and display unstable LSDB topology.
  2. Two OSPF routers reach ExStart and fail to finish database description negotiation over a link with unequal MTUs.
  3. OSPF Hello packets arrive but neighboring interfaces use different authentication settings and no adjacency forms.
  4. A newly connected router reports no OSPF neighbors despite good interface and IP status, and the operator needs protocol-level evidence.

Explanation

Correct Answer

D:

This case requires the OSPF adjacency diagnostics action. The operator can distinguish Down, Init, ExStart, Exchange, and Full adjacency states.

Incorrect Answers

A:

This other case would be better matched to Assign a unique stable router ID to each OSPF speaker. Every router is identified unambiguously in the link-state topology database.

B:

This other case would be better matched to Correct the interface MTU mismatch on the two ends before attempting full database synchronization. Compatible MTUs remove a common cause of OSPF database-description exchange failures.

C:

This other case would be better matched to Align the supported OSPF authentication method and credentials across the link. Matching authentication lets correctly authenticated protocol packets participate in adjacency establishment.

Question 33

Several OSPF routers share a broadcast Ethernet VLAN and require an efficient way to exchange link-state information. Which Junos networking action or protocol decision best addresses this requirement?

  1. Design the branch as a suitable OSPF NSSA and use its type 7 external origination behavior.
  2. Use the OSPF designated router and backup designated router election mechanism.
  3. Configure a valid OSPF area range summary at the appropriate area border router.
  4. Restore a valid OSPF backbone connection or properly supported virtual-link design where justified.

Explanation

Correct Answer

B:

This action addresses OSPF designated router election. Flooding on the broadcast segment is coordinated through elected DR and BDR roles.

Incorrect Answers

A:

That action targets NSSA external route: External routes can be introduced inside the NSSA without normal type 5 flooding within that area. It does not directly resolve the stated OSPF designated router election requirement.

C:

That action targets OSPF interarea summary: Interarea announcements can be condensed to an aggregate representing covered prefixes. It does not directly resolve the stated OSPF designated router election requirement.

D:

That action targets Backbone area connectivity: Interarea exchange can traverse a continuous logical backbone as OSPF requires. It does not directly resolve the stated OSPF designated router election requirement.

Question 34

A Junos network engineer takes this step: Use the OSPF designated router and backup designated router election mechanism. Which outcome most directly follows?

  1. External routes can be introduced inside the NSSA without normal type 5 flooding within that area.
  2. Interarea announcements can be condensed to an aggregate representing covered prefixes.
  3. Flooding on the broadcast segment is coordinated through elected DR and BDR roles.
  4. Interarea exchange can traverse a continuous logical backbone as OSPF requires.

Explanation

Correct Answer

C:

This is the direct result of the OSPF designated router election decision: Flooding on the broadcast segment is coordinated through elected DR and BDR roles.

Incorrect Answers

A:

This outcome is associated with NSSA external route (Design the branch as a suitable OSPF NSSA and use its type 7 external origination behavior.), not the specified action.

B:

This outcome is associated with OSPF interarea summary (Configure a valid OSPF area range summary at the appropriate area border router.), not the specified action.

D:

This outcome is associated with Backbone area connectivity (Restore a valid OSPF backbone connection or properly supported virtual-link design where justified.), not the specified action.

Question 35

Several OSPF routers share a broadcast Ethernet VLAN and require an efficient way to exchange link-state information. A colleague instead suggests: Configure a valid OSPF area range summary at the appropriate area border router. Which corrective approach most directly addresses the original issue?

  1. Restore a valid OSPF backbone connection or properly supported virtual-link design where justified.
  2. Design the branch as a suitable OSPF NSSA and use its type 7 external origination behavior.
  3. Configure a valid OSPF area range summary at the appropriate area border router.
  4. Use the OSPF designated router and backup designated router election mechanism.

Explanation

Correct Answer

D:

This corrective choice addresses OSPF designated router election. Flooding on the broadcast segment is coordinated through elected DR and BDR roles.

Incorrect Answers

A:

That alternative applies to Backbone area connectivity instead. Interarea exchange can traverse a continuous logical backbone as OSPF requires.

B:

That alternative applies to NSSA external route instead. External routes can be introduced inside the NSSA without normal type 5 flooding within that area.

C:

That alternative applies to OSPF interarea summary instead. Interarea announcements can be condensed to an aggregate representing covered prefixes.

Question 36

An enterprise network designer recommends: Use the OSPF designated router and backup designated router election mechanism. Which situation most clearly calls for this action?

  1. Several OSPF routers share a broadcast Ethernet VLAN and require an efficient way to exchange link-state information.
  2. A branch OSPF area must avoid ordinary external type 5 LSAs but allow limited local external injection.
  3. A growing enterprise advertises many contiguous internal prefixes from one OSPF area to other areas through its border router.
  4. A multiple-area OSPF topology lacks a valid area zero transit path between area border routers.

Explanation

Correct Answer

A:

This case requires the OSPF designated router election action. Flooding on the broadcast segment is coordinated through elected DR and BDR roles.

Incorrect Answers

B:

This other case would be better matched to Design the branch as a suitable OSPF NSSA and use its type 7 external origination behavior. External routes can be introduced inside the NSSA without normal type 5 flooding within that area.

C:

This other case would be better matched to Configure a valid OSPF area range summary at the appropriate area border router. Interarea announcements can be condensed to an aggregate representing covered prefixes.

D:

This other case would be better matched to Restore a valid OSPF backbone connection or properly supported virtual-link design where justified. Interarea exchange can traverse a continuous logical backbone as OSPF requires.

Question 37

Two OSPF paths reach the same prefix, but the low-bandwidth path is preferred because its accumulated metric is currently lower. Which Junos networking action or protocol decision best addresses this requirement?

  1. Redistribute the selected external route using a controlled OSPF export policy on an ASBR.
  2. Adjust the relevant OSPF interface cost to express the desired preferred path.
  3. Compare the OSPF link-state database with the installed routing table.
  4. Allow updated link-state advertisements to flood and each router to recompute SPF.

Explanation

Correct Answer

B:

This action addresses OSPF cost tuning. Shortest-path computation can select the path with the lower cumulative OSPF cost.

Incorrect Answers

A:

That action targets ASBR external injection: Eligible external prefixes can be originated as OSPF external routing information. It does not directly resolve the stated OSPF cost tuning requirement.

C:

That action targets Link-state database inspection: The operator can distinguish missing topology advertisements from a later route selection issue. It does not directly resolve the stated OSPF cost tuning requirement.

D:

That action targets OSPF topology change propagation: The routers can recalculate shortest paths from a consistent view of the changed topology. It does not directly resolve the stated OSPF cost tuning requirement.

Question 38

A Junos network engineer takes this step: Adjust the relevant OSPF interface cost to express the desired preferred path. Which outcome most directly follows?

  1. Eligible external prefixes can be originated as OSPF external routing information.
  2. The routers can recalculate shortest paths from a consistent view of the changed topology.
  3. Shortest-path computation can select the path with the lower cumulative OSPF cost.
  4. The operator can distinguish missing topology advertisements from a later route selection issue.

Explanation

Correct Answer

C:

This is the direct result of the OSPF cost tuning decision: Shortest-path computation can select the path with the lower cumulative OSPF cost.

Incorrect Answers

A:

This outcome is associated with ASBR external injection (Redistribute the selected external route using a controlled OSPF export policy on an ASBR.), not the specified action.

B:

This outcome is associated with OSPF topology change propagation (Allow updated link-state advertisements to flood and each router to recompute SPF.), not the specified action.

D:

This outcome is associated with Link-state database inspection (Compare the OSPF link-state database with the installed routing table.), not the specified action.

Question 39

Two OSPF paths reach the same prefix, but the low-bandwidth path is preferred because its accumulated metric is currently lower. A colleague instead suggests: Redistribute the selected external route using a controlled OSPF export policy on an ASBR. Which corrective approach most directly addresses the original issue?

  1. Redistribute the selected external route using a controlled OSPF export policy on an ASBR.
  2. Allow updated link-state advertisements to flood and each router to recompute SPF.
  3. Compare the OSPF link-state database with the installed routing table.
  4. Adjust the relevant OSPF interface cost to express the desired preferred path.

Explanation

Correct Answer

D:

This corrective choice addresses OSPF cost tuning. Shortest-path computation can select the path with the lower cumulative OSPF cost.

Incorrect Answers

A:

That alternative applies to ASBR external injection instead. Eligible external prefixes can be originated as OSPF external routing information.

B:

That alternative applies to OSPF topology change propagation instead. The routers can recalculate shortest paths from a consistent view of the changed topology.

C:

That alternative applies to Link-state database inspection instead. The operator can distinguish missing topology advertisements from a later route selection issue.

Question 40

An enterprise network designer recommends: Adjust the relevant OSPF interface cost to express the desired preferred path. Which situation most clearly calls for this action?

  1. Two OSPF paths reach the same prefix, but the low-bandwidth path is preferred because its accumulated metric is currently lower.
  2. A router loses a directly connected OSPF link and other area members continue forwarding on obsolete topology until they receive an update.
  3. A route is missing from the OSPF routing table and the engineer must determine whether its LSA is present at all.
  4. An OSPF domain must carry a route learned from an external protocol and identify the source as external to the OSPF area topology.

Explanation

Correct Answer

A:

This case requires the OSPF cost tuning action. Shortest-path computation can select the path with the lower cumulative OSPF cost.

Incorrect Answers

B:

This other case would be better matched to Allow updated link-state advertisements to flood and each router to recompute SPF. The routers can recalculate shortest paths from a consistent view of the changed topology.

C:

This other case would be better matched to Compare the OSPF link-state database with the installed routing table. The operator can distinguish missing topology advertisements from a later route selection issue.

D:

This other case would be better matched to Redistribute the selected external route using a controlled OSPF export policy on an ASBR. Eligible external prefixes can be originated as OSPF external routing information.

Enterprise Routing and Switching, Professional (JNCIP-ENT) (JN0-650) Practice Tests