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Juniper JN0-363 Exam Questions
- Topic 1: Protocol-Independent Routing: In this section of the exam, candidates must show knowledge regarding understanding concepts, operations, or functionality of various protocol-independent routing components.
- Topic 2: Open Shortest Path First (OSPF): In this section of the exam, the concepts covered include the operation or functionality of OSPF such as Link-state database, OSPF packet types, Router ID, Adjacencies and neighbors, etc.
- Topic 3: Intermediate System to Intermediate System (IS-IS): This section of the exam identifies =the concepts, operation, or functionality of IS-IS such as Link-state database, IS-IS protocol data units (PDUs), Type, length, values (TLVs), Adjacencies and neighbors, and Levels and areas.
- Topic 4: Border Gateway Protocol (BGP): This section of the exam covers BGP basic operation, BGP message types, Attributes Route/path selection process, etc.
- Topic 5: Layer 2 Bridging or VLANs: In this section, topics evaluated include the concepts, operation, or functionality of Layer 2 bridging for the Junos OS such as Service provider switching platforms, Bridging elements and terminology, Frame processing, Virtual Switches, and Provider bridging.
- Topic 6: Spanning-Tree Protocols: Spanning-Tree Protocols: The section covers topics such as how to identify the concepts, benefits, operation, or functionality of Spanning Tree Protocol and its variants.
- Topic 7: Multiprotocol Label Switching (MPLS): In this section, topics covered include how to identify the concepts, operation, or functionality of MPLS such as MPLS terminology, MPLS packet header, End-to-end packet flow and forwarding, Labels and the label information base, and MPLS and routing tables.
- Topic 8: Identify the concepts, operation, or functionality of IPv6: The exam section relates to knowledge of IPv4 versus IPv6 Address types, notation, and format, Address scopes, Autoconfiguration, and Tunneling.
- Topic 9: Tunnels: In this section, the topics covered include how to identify the concepts, requirements, or functionality of IP tunneling, Tunneling applications and considerations, and Generic routing encapsulation (GRE).
- Topic 10: High Availability: In this section of the exam, topics covered include the benefits, applications, or requirements of high availability such as Link aggregation groups (LAGs) and multichassis LAGs (MC- LAGs), Graceful restart (GR), Graceful Routing Engine switchover (GRES), Nonstop bridging (NSB), and Nonstop active routing (NSR).
Free Juniper JN0-363 Exam Actual Questions
Note: Premium Questions for JN0-363 were last updated On May. 27, 2026 (see below)
Exhibit
Which prefix in the output shown in the exhibit is an external prefix injected by an OSPF router?
In the OSPF routing table output, prefixes are marked with different route types. An external prefix injected into OSPF is marked as 'Ext' (External) followed by a number that indicates whether it's an E1 or E2 route. The prefix 172.18.1.0/24 is marked as Ext2, which indicates that it is an external route that has been redistributed into OSPF from another routing protocol or static configuration.
Juniper Networks Technical Documentation on OSPF
Which two statements are correct about segment routing? (Choose two.)
Segment routing is a source routing paradigm that allows a source router to define the path that a packet will take through the network by assigning an ordered list of segments---identifiers that specify a forwarding path for the packet through the network. Segment Routing can be implemented over an MPLS architecture or with IPv6 (SRv6).
A . Segment routing does not require a full mesh of adjacencies or state per transit path in the network, which is often the case with conventional MPLS signaling protocols like RSVP-TE. It leverages the existing IGP topology for forwarding without the need to maintain a state for each LSP (Label Switched Path), hence requiring very little resources to maintain.
B . In segment routing, labels (or segments) are distributed via IGP routing protocols like OSPF or IS-IS with extensions to carry segment routing information. These protocols are enhanced with Segment Routing extensions to distribute labels. For example, OSPFv2 is extended with Segment Routing extensions defined in RFC 8665.
C . This statement is not entirely correct. While it is true that segment routing does not require the maintenance of a state for each path (LSP), the concept of 'segment routing adjacencies' is a mischaracterization. Segment routing leverages the existing adjacencies formed by the underlying IGP.
D . Label assignments in segment routing are not advertised through LDP (Label Distribution Protocol) updates. Segment routing does away with LDP and instead uses IGP extensions to distribute labels.
Juniper Networks documentation on Segment Routing: Segment Routing Overview
Juniper Networks technical documentation providing guidance on configuring OSPF with Segment Routing extensions.
IETF RFC 8665: OSPF Extension for Segment Routing.
Exhibit
You are asked to configure the OSPF environment to prevent the DRother routers from participating in DR/BDR election.
Referring to the exhibit, which command will accomplish this task?
To prevent a router from participating in the OSPF designated router (DR) and backup designated router (BDR) election process, you set the OSPF priority to 0 on the interfaces of that router. This tells OSPF that the router on those interfaces is not to be considered for election as either DR or BDR, effectively making them DRother routers. The exhibit indicates that this is the desired configuration, and therefore the correct command to issue on the Juniper device would be to set the priority to 0 on the relevant interfaces.
You are bringing a new network online with three MX Series devices enabled for STP. No root bridge priority has been configured. Which statement is true in this scenario?
https://supportportal.juniper.net/s/article/EX-Identify-the-Root-Bridge-in-a-Spanning-Tree-STP-network?language=en_US The root bridge in a spanning-tree network is the bridge with the smallest or the lowest bridge ID.
In the absence of a manually configured priority, the Spanning Tree Protocol (STP) elects the root bridge based on the lowest bridge ID, which is a combination of the priority and the MAC address. The device with the lowest MAC address will have the lowest bridge ID and thus be elected as the root bridge.
Juniper Networks Technical Documentation on STP
Exhibit button
Which two statements are correct about the service provider MPLS network shown in the exhibit? (Choose two.)
In MPLS, multiple paths can be merged if they share the same egress router. In the given scenario, traffic from Network 1 to Network 3 and Network 4 can be engineered to follow the same label-switched path (LSP) within the MPLS network until they reach the last common point before diverging to their respective destinations.
As for R3 performing label operations, in a typical MPLS network, intermediate routers (like R3) perform label swapping. They replace the incoming label with a new label before forwarding the packet along the LSP. A label pop operation is typically performed by the egress router in the case of an ultimate hop pop (UHP), where it removes the MPLS label before delivering the packet to the final destination outside the MPLS domain.
Juniper Networks Technical Documentation on MPLS
Understanding MPLS Label Operations (Swap, Push, and Pop) - Juniper Networks
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