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.
- Match IS-IS authentication configuration on participating interfaces and levels
- Create an aggregate route only when relevant contributing more-specific active routes justify the summary
- Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context
- 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.
- Inspect preference and active forwarding next-hop selection
- Inspect route detail for next-hop resolution before editing preference
- Confirm the address context and any explicitly configured martian exceptions
- 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.
- The IRB responds for its gateway address on the intended VLAN
- Forwarding changes according to configured path preference rather than random distribution
- The route is copied only to the tables selected by the group and policy
- 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.
- Create an aggregate route only when relevant contributing more-specific active routes justify the summary
- Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context
- Configure an eBGP or iBGP peer with the correct peer AS and reachable TCP endpoint
- 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.
- Inspect the static next hop and replace it with a reachable adjacent address
- Configure the appropriate aggregate and review contributing routes before export
- Check the DR/BDR roles and whether both maintain Full adjacency to the DR set
- 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.
- Each customer's route is present in its intended table without unintended leakage
- The diagnosis distinguishes LSA absence from route preference or installation
- The summary is active and external advertisements reflect valid customer reachability
- 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.
- Create an aggregate route only when relevant contributing more-specific active routes justify the summary
- Use a resolvable next hop for a Junos static route instead of assuming a configured route is automatically active
- Use generated routes when a synthesized route should depend on contributing route information under policy
- 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.
- Check active contributors and the aggregate route state, rather than forcing an unrelated static next hop
- Inspect the hidden route reason and applicable policy decision
- Check interface routing-instance membership and installed forwarding context
- 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.
- The SPF decision matches the approved link cost plan
- The absence of contributors explains why the summary is inactive
- Only the intended prefix treatment changes while reserved ranges remain protected
- 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.
- Create an aggregate route only when relevant contributing more-specific active routes justify the summary
- Use filter-based forwarding on eligible incoming traffic to steer matching packets into the intended routing context
- Use generated routes when a synthesized route should depend on contributing route information under policy
- 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.
- Define contributing-route conditions and the intended generated route
- Confirm matching authentication parameters without exposing secret material
- Place relevant interfaces and route processing into separate configured instances
- 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.