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Juniper JN0-364 Practice Test 2

Question 10

A provider network team identifies this situation: An engineer adds a second static next hop but all traffic still takes the first link. Which engineering decision BEST fits the stated requirement? Choose ONE best answer.

  1. Match IS-IS authentication configuration on participating interfaces and levels
  2. Create an aggregate route only when relevant contributing more-specific active routes justify the summary
  3. Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context
  4. Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice

Explanation

Correct Answer

D:

Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice is the best technical design or decision for this Junos service-provider case: An engineer adds a second static next hop but all traffic still takes the first link. Technical basis: Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.

Incorrect Answers

A:

That option concerns IS-IS authentication checks. Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.

B:

That option concerns Aggregate-route contributor activation. Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.

C:

Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context is relevant to the different engineering topic "Filter-based forwarding", but it is not the most directly supported technical design or decision for this precise case: An engineer adds a second static next hop but all traffic still takes the first link. the best answer here is: Use qualified next hops to express different preference on alternate paths without inventing a universal equal-cost choice.

Question 11

A provider network team identifies this situation: An engineer adds a second static next hop but all traffic still takes the first link. Which implementation or troubleshooting step is MOST APPROPRIATE here? Choose ONE best answer.

  1. Inspect preference and active forwarding next-hop selection
  2. Inspect route detail for next-hop resolution before editing preference
  3. Confirm the address context and any explicitly configured martian exceptions
  4. Compare wide metrics and circuit-level configuration

Explanation

Correct Answer

A:

Inspect preference and active forwarding next-hop selection is the best implementation and troubleshooting step for this Junos service-provider case: An engineer adds a second static next hop but all traffic still takes the first link. Technical basis: Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.

Incorrect Answers

B:

Inspect route detail for next-hop resolution before editing preference is relevant to the different engineering topic "Static-route next-hop resolution", but it is not the most directly supported implementation and troubleshooting step for this precise case: An engineer adds a second static next hop but all traffic still takes the first link. the best answer here is: Inspect preference and active forwarding next-hop selection.

C:

That option concerns Martian-prefix handling. Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.

D:

Compare wide metrics and circuit-level configuration is relevant to the different engineering topic "IS-IS wide metrics", but it is not the most directly supported implementation and troubleshooting step for this precise case: An engineer adds a second static next hop but all traffic still takes the first link. the best answer here is: Inspect preference and active forwarding next-hop selection.

Question 12

A provider network team identifies this situation: An engineer adds a second static next hop but all traffic still takes the first link. What verification evidence MOST CLEARLY demonstrates the solution is working? Choose ONE best answer.

  1. The IRB responds for its gateway address on the intended VLAN
  2. Forwarding changes according to configured path preference rather than random distribution
  3. The route is copied only to the tables selected by the group and policy
  4. The selected route has a resolved next hop and a matching forwarding entry

Explanation

Correct Answer

B:

Forwarding changes according to configured path preference rather than random distribution is the best operational verification evidence for this Junos service-provider case: An engineer adds a second static next hop but all traffic still takes the first link. Technical basis: Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.

Incorrect Answers

A:

That option concerns Integrated routing and bridging. Junos static qualified next hops can carry preferences or metrics, and installed alternatives depend on resolution and selection.

C:

The route is copied only to the tables selected by the group and policy is relevant to the different engineering topic "RIB-group route sharing", but it is not the most directly supported operational verification evidence for this precise case: An engineer adds a second static next hop but all traffic still takes the first link. the best answer here is: Forwarding changes according to configured path preference rather than random distribution.

D:

The selected route has a resolved next hop and a matching forwarding entry is relevant to the different engineering topic "Static-route next-hop resolution", but it is not the most directly supported operational verification evidence for this precise case: An engineer adds a second static next hop but all traffic still takes the first link. the best answer here is: Forwarding changes according to configured path preference rather than random distribution.

Question 13

A Junos service-provider engineer is reviewing this operational case: A provider wants to advertise a customer /20 backed by active customer /24s. Which technical approach MOST DIRECTLY addresses the issue? Select ONE best answer.

  1. Create an aggregate route only when relevant contributing more-specific active routes justify the summary
  2. Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context
  3. Configure an eBGP or iBGP peer with the correct peer AS and reachable TCP endpoint
  4. Use generated routes when a synthesized route should depend on contributing route information under policy

Explanation

Correct Answer

A:

Create an aggregate route only when relevant contributing more-specific active routes justify the summary is the best technical design or decision for this Junos service-provider case: A provider wants to advertise a customer /20 backed by active customer /24s. Technical basis: An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

Incorrect Answers

B:

Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context is relevant to the different engineering topic "Filter-based forwarding", but it is not the most directly supported technical design or decision for this precise case: A provider wants to advertise a customer /20 backed by active customer /24s. the best answer here is: Create an aggregate route only when relevant contributing more-specific active routes justify the summary.

C:

That option concerns BGP TCP session and AS negotiation. An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

D:

Use generated routes when a synthesized route should depend on contributing route information under policy is relevant to the different engineering topic "Generated-route dependencies", but it is not the most directly supported technical design or decision for this precise case: A provider wants to advertise a customer /20 backed by active customer /24s. the best answer here is: Create an aggregate route only when relevant contributing more-specific active routes justify the summary.

Question 14

A Junos service-provider engineer is reviewing this operational case: A provider wants to advertise a customer /20 backed by active customer /24s. What specific configuration or diagnostic action BEST implements the intended response? Select ONE best answer.

  1. Inspect the static next hop and replace it with a reachable adjacent address
  2. Configure the appropriate aggregate and review contributing routes before export
  3. Check the DR/BDR roles and whether both maintain Full adjacency to the DR set
  4. Place relevant interfaces and route processing into separate configured instances

Explanation

Correct Answer

B:

Configure the appropriate aggregate and review contributing routes before export is the best implementation and troubleshooting step for this Junos service-provider case: A provider wants to advertise a customer /20 backed by active customer /24s. Technical basis: An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

Incorrect Answers

A:

Inspect the static next hop and replace it with a reachable adjacent address is relevant to the different engineering topic "Static-route next-hop resolution", but it is not the most directly supported implementation and troubleshooting step for this precise case: A provider wants to advertise a customer /20 backed by active customer /24s. the best answer here is: Configure the appropriate aggregate and review contributing routes before export.

C:

That option concerns OSPF two-way versus full neighbors. An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

D:

Place relevant interfaces and route processing into separate configured instances is relevant to the different engineering topic "Routing-instance isolation", but it is not the most directly supported implementation and troubleshooting step for this precise case: A provider wants to advertise a customer /20 backed by active customer /24s. the best answer here is: Configure the appropriate aggregate and review contributing routes before export.

Question 15

A Junos service-provider engineer is reviewing this operational case: A provider wants to advertise a customer /20 backed by active customer /24s. Which observation would MOST RELIABLY verify the intended outcome? Select ONE best answer.

  1. Each customer's route is present in its intended table without unintended leakage
  2. The diagnosis distinguishes LSA absence from route preference or installation
  3. The summary is active and external advertisements reflect valid customer reachability
  4. The advertised default withdraws when the required valid contribution disappears

Explanation

Correct Answer

C:

The summary is active and external advertisements reflect valid customer reachability is the best operational verification evidence for this Junos service-provider case: A provider wants to advertise a customer /20 backed by active customer /24s. Technical basis: An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

Incorrect Answers

A:

Each customer's route is present in its intended table without unintended leakage is relevant to the different engineering topic "Routing-instance isolation", but it is not the most directly supported operational verification evidence for this precise case: A provider wants to advertise a customer /20 backed by active customer /24s. the best answer here is: The summary is active and external advertisements reflect valid customer reachability.

B:

That option concerns OSPF operational troubleshooting. An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

D:

The advertised default withdraws when the required valid contribution disappears is relevant to the different engineering topic "Generated-route dependencies", but it is not the most directly supported operational verification evidence for this precise case: A provider wants to advertise a customer /20 backed by active customer /24s. the best answer here is: The summary is active and external advertisements reflect valid customer reachability.

Question 16

A provider network team identifies this situation: A route summary disappears after all customer component routes are withdrawn. Which engineering decision BEST fits the stated requirement? Choose ONE best answer.

  1. Create an aggregate route only when relevant contributing more-specific active routes justify the summary
  2. Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active
  3. Use generated routes when a synthesized route should depend on contributing route information under policy
  4. Use VRRP priorities and tracking to provide a resilient virtual default gateway on an eligible segment

Explanation

Correct Answer

A:

Create an aggregate route only when relevant contributing more-specific active routes justify the summary is the best technical design or decision for this Junos service-provider case: A route summary disappears after all customer component routes are withdrawn. Technical basis: An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

Incorrect Answers

B:

Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active is relevant to the different engineering topic "Static-route next-hop resolution", but it is not the most directly supported technical design or decision for this precise case: A route summary disappears after all customer component routes are withdrawn. the best answer here is: Create an aggregate route only when relevant contributing more-specific active routes justify the summary.

C:

Use generated routes when a synthesized route should depend on contributing route information under policy is relevant to the different engineering topic "Generated-route dependencies", but it is not the most directly supported technical design or decision for this precise case: A route summary disappears after all customer component routes are withdrawn. the best answer here is: Create an aggregate route only when relevant contributing more-specific active routes justify the summary.

D:

That option concerns VRRP virtual gateway failover. An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

Question 17

A provider network team identifies this situation: A route summary disappears after all customer component routes are withdrawn. Which implementation or troubleshooting step is MOST APPROPRIATE here? Choose ONE best answer.

  1. Check active contributors and the aggregate route state, rather than forcing an unrelated static next hop
  2. Inspect the hidden route reason and applicable policy decision
  3. Check interface routing-instance membership and installed forwarding context
  4. Compare the observed labels with configured service encapsulation

Explanation

Correct Answer

A:

Check active contributors and the aggregate route state, rather than forcing an unrelated static next hop is the best implementation and troubleshooting step for this Junos service-provider case: A route summary disappears after all customer component routes are withdrawn. Technical basis: An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

Incorrect Answers

B:

That option concerns Active-route versus hidden-route triage. An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

C:

Check interface routing-instance membership and installed forwarding context is relevant to the different engineering topic "Routing-instance isolation", but it is not the most directly supported implementation and troubleshooting step for this precise case: A route summary disappears after all customer component routes are withdrawn. the best answer here is: Check active contributors and the aggregate route state, rather than forcing an unrelated static next hop.

D:

That option concerns MPLS label-stack header. An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

Question 18

A provider network team identifies this situation: A route summary disappears after all customer component routes are withdrawn. What verification evidence MOST CLEARLY demonstrates the solution is working? Choose ONE best answer.

  1. The SPF decision matches the approved link cost plan
  2. The absence of contributors explains why the summary is inactive
  3. Only the intended prefix treatment changes while reserved ranges remain protected
  4. The route is copied only to the tables selected by the group and policy

Explanation

Correct Answer

B:

The absence of contributors explains why the summary is inactive is the best operational verification evidence for this Junos service-provider case: A route summary disappears after all customer component routes are withdrawn. Technical basis: An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

Incorrect Answers

A:

That option concerns IS-IS wide metrics. An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

C:

That option concerns Martian-prefix handling. An aggregate route represents contributor reachability and is not equivalent to a forwarding path for every unused address in a block.

D:

The route is copied only to the tables selected by the group and policy is relevant to the different engineering topic "RIB-group route sharing", but it is not the most directly supported operational verification evidence for this precise case: A route summary disappears after all customer component routes are withdrawn. the best answer here is: The absence of contributors explains why the summary is inactive.

Question 19

A Junos service-provider engineer is reviewing this operational case: An edge router should originate a default only while a validated upstream path exists. Which technical approach MOST DIRECTLY addresses the issue? Select ONE best answer.

  1. Create an aggregate route only when relevant contributing more-specific active routes justify the summary
  2. Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context
  3. Use generated routes when a synthesized route should depend on contributing route information under policy
  4. Enable LDP on intended MPLS transport interfaces and verify neighbor discovery

Explanation

Correct Answer

C:

Use generated routes when a synthesized route should depend on contributing route information under policy is the best technical design or decision for this Junos service-provider case: An edge router should originate a default only while a validated upstream path exists. Technical basis: Generated routing can synthesize a route from active contributors while its eligibility depends on configuration and contributing route selection.

Incorrect Answers

A:

Create an aggregate route only when relevant contributing more-specific active routes justify the summary is relevant to the different engineering topic "Aggregate-route contributor activation", but it is not the most directly supported technical design or decision for this precise case: An edge router should originate a default only while a validated upstream path exists. the best answer here is: Use generated routes when a synthesized route should depend on contributing route information under policy.

B:

Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context is relevant to the different engineering topic "Filter-based forwarding", but it is not the most directly supported technical design or decision for this precise case: An edge router should originate a default only while a validated upstream path exists. the best answer here is: Use generated routes when a synthesized route should depend on contributing route information under policy.

D:

That option concerns LDP session discovery. Generated routing can synthesize a route from active contributors while its eligibility depends on configuration and contributing route selection.

Question 20

A Junos service-provider engineer is reviewing this operational case: An edge router should originate a default only while a validated upstream path exists. What specific configuration or diagnostic action BEST implements the intended response? Select ONE best answer.

  1. Define contributing-route conditions and the intended generated route
  2. Confirm matching authentication parameters without exposing secret material
  3. Place relevant interfaces and route processing into separate configured instances
  4. Inspect the martian list and route handling before considering a justified exception

Explanation

Correct Answer

A:

Define contributing-route conditions and the intended generated route is the best implementation and troubleshooting step for this Junos service-provider case: An edge router should originate a default only while a validated upstream path exists. Technical basis: Generated routing can synthesize a route from active contributors while its eligibility depends on configuration and contributing route selection.

Incorrect Answers

B:

That option concerns IS-IS authentication checks. Generated routing can synthesize a route from active contributors while its eligibility depends on configuration and contributing route selection.

C:

Place relevant interfaces and route processing into separate configured instances is relevant to the different engineering topic "Routing-instance isolation", but it is not the most directly supported implementation and troubleshooting step for this precise case: An edge router should originate a default only while a validated upstream path exists. the best answer here is: Define contributing-route conditions and the intended generated route.

D:

Inspect the martian list and route handling before considering a justified exception is relevant to the different engineering topic "Martian-prefix handling", but it is not the most directly supported implementation and troubleshooting step for this precise case: An edge router should originate a default only while a validated upstream path exists. the best answer here is: Define contributing-route conditions and the intended generated route.

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