JNCDS-WAN Practice Questions - Juniper Networks Certified Design Specialist, WAN (JNCDS-WAN) Exam - JNCDS-WAN Practice Questions - Juniper Networks Certified Design Specialist, WAN (JNCDS-WAN) Exam

Question 1

A WAN designer is evaluating SD-WAN solutions for a retail chain with 500 branch sites. Which Juniper solution provides centralized SD-WAN policy management, application-aware routing, and WAN assurance from the cloud?

Juniper Mist AI with WAN Assurance, deploying SRX Series gateways managed from the Mist cloud portal Juniper Apstra managing QFX switches at each branch location OSPF with equal-cost multipath across all WAN links Manual static routing with floating static routes as backup

Correct Answer:

Juniper Mist AI with WAN Assurance, deploying SRX Series gateways managed from the Mist cloud portal

Question 2

In an MPLS network design, what is the purpose of a Label Edge Router (LER) at the customer edge?

Assign MPLS labels to incoming IP packets (imposition) at network ingress and remove labels from packets leaving the MPLS cloud (disposition) Propagate MPLS labels to customer CE devices using LDP Perform MPLS FRR (Fast Reroute) path computation for link protection Terminate BGP sessions from all P routers in the core

Correct Answer:

Assign MPLS labels to incoming IP packets (imposition) at network ingress and remove labels from packets leaving the MPLS cloud (disposition)

Question 3

When designing an MPLS-based L3VPN (RFC 4364) service for enterprise customers, which BGP address family carries customer routes between PE routers?

MP-BGP with the VPNv4 address family (AFI 1, SAFI 128) to carry customer routes with a Route Distinguisher prepended to make them globally unique Standard BGP with IPv4 unicast and community attributes to tag customer routes OSPF with route redistribution between customer VRFs LDP with targeted LDP sessions between all PE routers

Correct Answer:

MP-BGP with the VPNv4 address family (AFI 1, SAFI 128) to carry customer routes with a Route Distinguisher prepended to make them globally unique

Question 4

In a Segment Routing (SR-MPLS) design, what is the key advantage of Segment Routing over traditional MPLS with LDP or RSVP-TE?

Segment Routing encodes the entire path in the packet header at the ingress node, eliminating the need for per-flow state in transit (P) routers and removing the need for LDP/RSVP signaling protocols Segment Routing provides higher throughput by using a compressed label stack of a single label for all traffic Segment Routing requires a separate out-of-band controller for all forwarding decisions Segment Routing replaces BGP as the WAN routing protocol

Correct Answer:

Segment Routing encodes the entire path in the packet header at the ingress node, eliminating the need for per-flow state in transit (P) routers and removing the need for LDP/RSVP signaling protocols

Question 5

A WAN designer needs to provide strict bandwidth guarantees for voice traffic (G.711 and G.729 codecs) across an MPLS WAN. Which Class of Service (CoS) mechanism provides these guarantees?

Strict Priority (Expedited Forwarding) queuing for voice traffic ensures voice packets are always forwarded before lower-priority traffic, minimizing latency and jitter Weighted Random Early Detection (WRED) applied to the voice queue Tail drop on all queues with a small buffer for voice packets OSPF route metric manipulation to route voice through lower-capacity links

Correct Answer:

Strict Priority (Expedited Forwarding) queuing for voice traffic ensures voice packets are always forwarded before lower-priority traffic, minimizing latency and jitter

Question 1

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Prepare with the JNCDS-WAN Practice Questions - Juniper Networks Certified Design Specialist, WAN (JNCDS-WAN) Exam practice quiz. This question bank includes 100 questions covering juniper, mpls, routing, design, and designer. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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JNCDS-WAN Practice Questions - Juniper Networks Certified Design Specialist, WAN (JNCDS-WAN) Exam

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

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JNCDS-WAN Practice Questions - Juniper Networks Certified Design Specialist, WAN (JNCDS-WAN) Exam

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