Juniper JN0-364 Practice Test Questions, Juniper JN0-364 Exam Practice Test Questions

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JN0-364 Service Provider Routing and Switching, Specialist

JN0-364 is the current Service Provider Routing and Switching, Specialist exam as of October 2026. HPE Juniper Networking lists 65 multiple-choice questions in 90 minutes, Pearson VUE delivery, JNCIA-Junos as the prerequisite, and Junos OS 25.2 as the software reference. It replaced JN0-363 on February 2, 2026.

The blueprint is broad: protocol-independent routing, OSPF, IS-IS, BGP, Layer 2 bridging and VLANs, spanning-tree variants, MPLS, IPv6, GRE tunnels, and high availability. The common thread is service-provider operations. Candidates must understand not only what each protocol does but how state is configured, verified, and troubleshot across a Junos network.

The current JN0-106 associate exam provides the Junos foundation. If routing tables, policy, interface hierarchy, or operational mode are still slow, strengthen those first. JN0-364 adds enough simultaneous control planes that weak fundamentals become a major study bottleneck.

Protocol-independent routing is the control surface beneath the protocols

The blueprint includes static, aggregate, and generated routes, martian addresses, routing instances, RIB groups, load balancing, and filter-based forwarding. These are not secondary topics. They determine which tables routes enter, which paths become active, and how traffic can be steered independently of the dynamic protocol that learned a prefix.

Build labs where the same destination appears from multiple sources. Change route preference, create an aggregate, move information between routing instances, and apply filter-based forwarding. Before running a show command, predict which route should be active and why. That habit turns the routing table into a reasoned outcome rather than a display to memorize.

The concepts behind static routing make a clean baseline because they isolate local route selection before dynamic signaling complicates the picture.

OSPF and IS-IS should be practiced as living topology databases

For OSPF, JN0-364 expects knowledge of the link-state database, packet types, router IDs, neighbors, DR/BDR roles, area and router types, LSAs, configuration, policy, and troubleshooting. For IS-IS, candidates need PDUs, TLVs, levels, areas, adjacencies, DIS behavior, metrics, policy, and operational verification.

Do not study those items as vocabulary lists. Form a neighbor, inspect the database, change a metric, remove a link, and watch the shortest-path result change. Repeat the topology with the other protocol. This makes the shared link-state model visible while preserving the differences in hierarchy and protocol behavior.

The detailed explanation of OSPF areas and LSAs is useful, but a service-provider candidate should be equally comfortable reading IS-IS adjacency and database state.

BGP should be verified at every stage between peer and forwarding table

JN0-364 covers BGP messages, attributes, route selection, IBGP/EBGP interaction, peers, options, policy, and troubleshooting. A disciplined verification sequence is essential: confirm transport and session state, inspect received routes, apply policy reasoning, verify next-hop resolution, inspect active routes, and check what is advertised onward.

Create at least one lab where the BGP session remains Established while the desired route disappears. Use import policy, an unreachable next hop, or a competing path. The exercise proves why “peer up” and “service working” are different statements. The broader mechanics of BGP path selection become easier to apply when every attribute change produces visible route-state evidence.

Service-provider BGP work is inseparable from policy. Spend time writing and reading policy terms so that you can explain exactly why a route is accepted, rejected, modified, or exported.

Provider switching topics protect the service edge

The Layer 2 domain includes service-provider switching platforms, bridging concepts, frame processing, virtual switches, Q-in-Q provider bridging, VLAN port modes, tagging, IRB, and spanning-tree variants. These topics matter because service-provider networks often carry customer Layer 2 services even when the core itself is highly routed.

Practice Q-in-Q by distinguishing customer tags from the service-provider tag. Then verify how the frame is handled at ingress, across the provider domain, and at egress. This makes the separation between customer segmentation and provider forwarding explicit.

Spanning tree should be understood with security controls such as BPDU, loop, and root protection. Those features encode expectations at the edge and help prevent customer or access faults from destabilizing a larger Layer 2 domain.

MPLS study should begin with packet forwarding before signaling

The current blueprint includes MPLS terminology, label headers, end-to-end forwarding, label information, routing-table relationships, RSVP, LDP, and segment routing with MPLS. Start with the dataplane. Trace how an ingress node pushes a label, how transit nodes swap it, and how the egress processes the final label.

Then attach each signaling method to the label-switched path it creates. LDP distributes labels along routing paths, RSVP can establish traffic-engineered paths, and segment routing expresses path intent through segments. The concepts in MPLS forwarding provide a strong base when paired with Junos route and label-table output.

Do not memorize labels as static numbers. Focus on the control information that creates them and the forwarding behavior they enable. That perspective scales into VPN and traffic-engineering work at the professional level.

When comparing MPLS control methods, keep one question in view: what information tells the router which labeled path to use? LDP generally couples label distribution to IGP reachability, RSVP can signal traffic-engineered LSPs with explicit constraints, and segment routing represents path intent through ordered segments. Practice reading the resulting state rather than memorizing a feature table. If an LSP is down, determine whether the missing evidence is an IGP route, a signaling relationship, a label binding, or the forwarding entry itself.

Troubleshooting should therefore move from dependency to dependent feature. Verify core addressing and IGP reachability first, then protocol sessions, then label or tunnel state, and finally end-to-end service traffic. This sequence is efficient because later layers cannot be healthy when their transport assumptions are false. It also mirrors real service-provider operations, where the fastest resolution often comes from proving the lowest broken dependency before touching policy or service configuration.

IPv6 belongs in the same routing model as IPv4

JN0-364 covers IPv6 static routing and dynamic routing through OSPFv3, IS-IS, and BGP, plus IPv6-over-IPv4 tunneling. Treat IPv6 as a routed protocol with its own addressing and neighbor behavior rather than as a separate specialty. Route selection, policy, protocol adjacency, and troubleshooting discipline still apply.

Build dual-stack labs so you can compare the same topology under both address families. Verify that a protocol session can be healthy for one family while reachability for another is absent. This teaches you to inspect family-specific route state instead of assuming that one working path proves the other.

For transition tunnels, explicitly trace the outer IPv4 path and the inner IPv6 packet. The layered model is the same one used for GRE and prevents confusion about which address family is failing.

GRE tunnels add reachability without removing underlay dependencies

The tunnel objective covers applications, design considerations, GRE configuration, and troubleshooting. A GRE interface can make two remote networks appear directly connected at the logical layer, but the outer endpoints still depend on ordinary routing. If the underlay cannot reach the tunnel destination, the overlay path cannot work.

In the lab, verify outer routes, tunnel source and destination, inner routing, and MTU. Then break each independently. The difference between an underlay failure and an inner-route problem becomes obvious when you compare packet captures and interface state.

Use the conceptual discussion of GRE tunneling to broaden understanding, while keeping configuration practice aligned to the exact JN0-364 objectives.

High availability combines fast detection with preserved forwarding

Current HA topics include LAG, graceful restart, GRES, NSB, NSR, BFD, and VRRP. Each protects a different part of service continuity. Link aggregation addresses physical path loss, BFD accelerates failure detection, graceful and nonstop mechanisms reduce control-plane disruption, and VRRP protects the first-hop gateway identity.

Build a table that states for each feature what fails, what detects the failure, what state is preserved, and what alternate path or node takes over. The principles of VRRP redundancy are especially useful when contrasted with BFD: one provides a virtual gateway role, the other supplies rapid liveness information.

In testing, record packets lost and convergence time. A protocol can be “working as designed” while still failing a service-level objective if recovery is too slow for the application.

Study the current exam as one service-provider system

Separate notebooks for OSPF, BGP, MPLS, and HA are useful early, but final preparation should combine them. Build a topology where an IGP supplies core reachability, MPLS uses that underlay, BGP carries service or external routes, and HA mechanisms protect critical paths. Then introduce a fault and decide which control plane should react.

Use the objective list as a four-part readiness matrix: explain, configure, verify, troubleshoot. If you can define a feature but cannot identify healthy operational output, the topic is incomplete. If you can configure it but cannot predict the effect of a failure, it is not yet specialist-level knowledge.

The current professional progression represented in the approved inventory is JN0-664. That path rewards candidates who build durable service-provider reasoning now, because advanced Layer 2 VPN, EVPN, MPLS, and policy work assumes the specialist foundation is already fluent.

Before scheduling, verify the live JN0-364 blueprint and software reference again. The certification program's branding changed under HPE Networking in September 2026, but the exam remains centered on Junos service-provider routing and switching. Use current first-party objectives for scope and let hands-on operational evidence—routes, adjacencies, labels, policy results, tunnel state, and failover behavior—drive the final review.

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