JNCIE-SP Practice Questions - Juniper Networks Certified Expert, Service Provider Routing and Switching Exam - JNCIE-SP Practice Questions - Juniper Networks Certified Expert, Service Provider Routing and Switching Exam

Question 1

A network engineer is configuring IS-IS ABR summarization between Level 1 and Level 2. After adding a summary prefix under the Level 2 IS-IS export policy, the summary is not advertised into Level 2. What is the most likely cause?

IS-IS does not support prefix summarization at the ABR The policy is applied as import instead of export on the Level 2 instance The contributing Level 1 prefixes are not installed in the routing table yet Summarization requires a dedicated loopback interface at the ABR

Correct Answer:

The contributing Level 1 prefixes are not installed in the routing table yet

Question 2

On a Junos router running IS-IS, a Level 2 LSP is flooded with a metric of 16777215. What does this metric value signal to other routers?

The link uses wide metrics and is functioning normally at maximum utilization The prefix is unreachable and the router is withdrawing it via overload signaling The router has set the overload bit and is marking itself as a transit-avoidance node The metric value indicates the router ID tie-breaking field in ECMP scenarios

Correct Answer:

The prefix is unreachable and the router is withdrawing it via overload signaling

Question 3

A service provider needs to redistribute OSPF external routes into IS-IS with a specific tag to prevent re-redistribution back into OSPF on a downstream router. Which Junos configuration element correctly implements this?

Apply a community to the OSPF routes before redistribution; IS-IS reads BGP communities Set a tag value in the IS-IS export policy and match that tag in the OSPF import policy on the downstream router Use a route-filter to tag routes at the OSPF-to-IS-IS boundary using 'then tag' Configure an IS-IS route-target extended community on the redistributed prefixes

Correct Answer:

Use a route-filter to tag routes at the OSPF-to-IS-IS boundary using 'then tag'

Question 4

An engineer needs to leak a specific Level 2 prefix down into a Level 1 area without leaking the entire Level 2 topology. What is the correct Junos approach?

Enable 'wide-metrics-only' under the Level 1 IS-IS instance Apply an IS-IS import policy on the ABR that matches the prefix and sets 'level 1 active' Configure a routing policy under 'protocols isis export' on the ABR that accepts the specific L2 prefix and apply it to the Level 1 area Use BGP route reflector to push the prefix into the Level 1 area

Correct Answer:

Configure a routing policy under 'protocols isis export' on the ABR that accepts the specific L2 prefix and apply it to the Level 1 area

Question 5

A large SP network uses BGP confederations divided into three member-ASes. A prefix learned from an external peer is carried through two confederation member-ASes before reaching the egress ASBR. What is in the AS_PATH of that prefix as seen by the external peer receiving it?

The path contains the member-AS numbers in parenthetical notation followed by the originating external AS The path contains only the confederation AS number, stripping all member-AS information The path contains all member-AS numbers plus the confederation AS number and the external AS The path contains only the originating external AS number because confederations strip internal path information at the ASBR egress

Correct Answer:

The path contains only the confederation AS number, stripping all member-AS information

Question 1

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Prepare with the JNCIE-SP Practice Questions - Juniper Networks Certified Expert, Service Provider Routing and Switching Exam practice quiz. This question bank includes 100 questions covering junos, router, route, traffic, and mpls. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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JNCIE-SP Practice Questions - Juniper Networks Certified Expert, Service Provider Routing and Switching Exam

This practice set contains 100 questions from the matching question bank and focuses on junos, router, route, traffic, and mpls. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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JNCIE-SP Practice Questions - Juniper Networks Certified Expert, Service Provider Routing and Switching Exam

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