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Juniper JN0-364 Exam Syllabus Topics:

SectionObjectives
Topic 1: Intermediate System to Intermediate System (IS-IS)- Demonstrate knowledge of how to configure, monitor, or troubleshoot IS-IS
  • 1. Routing policy application
  • 2. Interfaces and adjacencies
  • 3. Troubleshooting tools
- Identify the concepts, operation, or functionality of IS-IS
  • 1. Metrics
  • 2. Adjacencies and neighbors
  • 3. Link-state database
  • 4. Type, length, values (TLVs)
  • 5. Designated intermediate system (DIS)
  • 6. Levels and areas
  • 7. IS-IS protocol data units (PDUs)
Topic 2: Layer 2 Bridging or VLANs- Identify the concepts, operation, or functionality of Layer 2 bridging for the Junos OS
  • 1. Virtual Switches
  • 2. Provider bridging (Q-in-Q tunneling)
  • 3. Bridging elements and terminology
  • 4. Frame processing
  • 5. Service provider switching platforms
- Demonstrate knowledge of how to configure, monitor, or troubleshoot Layer 2 bridging or VLANs
  • 1. VLANs
  • 2. Interfaces and ports
  • 3. Provider bridging
  • 4. IRB
- Identify the concepts, benefits, or functionality of VLANs
  • 1. Tagging
  • 2. Integrated Routing and Bridging (IRB)
  • 3. Port modes
Topic 3: Border Gateway Protocol (BGP)- Identify the concepts, operation, or functionality of BGP
  • 1. Route selection process
  • 2. BGP message types
  • 3. Attributes
  • 4. BGP basic operation
  • 5. BGP route reflection and confederations
  • 6. IBGP and EBGP functionality and interaction
- Demonstrate knowledge of how to configure, monitor, or troubleshoot BGP
  • 1. Routing policy application
  • 2. Troubleshooting tools
  • 3. Peers and peer groups
Topic 4: Open Shortest Path First (OSPF)- Identify the concepts, operation, or functionality of OSPF
  • 1. OSPF packet types
  • 2. Adjacencies and neighbors
  • 3. Router ID
  • 4. Link-state database
  • 5. Link-state advertisement (LSA) packet type
  • 6. OSPF area and router types
  • 7. Designated router and backup designated router
- Demonstrate knowledge of how to configure, monitor, or troubleshoot OSPF
  • 1. Routing policy application
  • 2. Troubleshooting tools
  • 3. Interfaces and neighbor
Topic 5: Protocol-Independent Routing- Identify the concepts, operation, or functionality of various protocol-independent routing components
  • 1. Routing instances, including routing information base (RIB) (also known as routing table) group
  • 2. Load balancing
  • 3. Martian addresses
  • 4. Filter-based forwarding
  • 5. Static, aggregate, and generated routes
- Demonstrate knowledge of how to configure, monitor, or troubleshoot various protocol-independent routing components
  • 1. Load balancing
  • 2. Filter-based forwarding
  • 3. Static, aggregate, and generated routes
Topic 6: IPv6- Demonstrate knowledge of how to configure, monitor, or troubleshoot IPv6
- Identify the concepts, operation, or functionality of IPv6
  • 1. Dynamic routing - OSPFv3, IS-IS, BGP
  • 2. IPv6 over IPv4 tunneling
  • 3. Static routes
Topic 7: Multiprotocol Label Switching (MPLS)- Demonstrate knowledge of how to configure, monitor, or troubleshoot MPLS
  • 1. RSVP-signaled Label-Switched Paths (LSPs)
  • 2. LDP-signaled Label-Switched Paths (LSPs)
  • 3. Shortest path segment-routing LSPs
  • 4. MPLS forwarding
- Identify the concepts, operation, or functionality of MPLS CoS processing on Junos devices
  • 1. Segment routing with MPLS
  • 2. MPLS packet header
  • 3. LDP
  • 4. Labels and the label information base
  • 5. MPLS and routing tables
  • 6. RSVP
  • 7. MPLS terminology
  • 8. End-to-end packet flow and forwarding
Topic 8: Spanning Tree Protocols- Identify the concepts, operation, or functionality of STP
  • 1. VSTP
  • 2. RSTP
  • 3. STP
  • 4. MSTP
- Demonstrate knowledge of how to configure, monitor, or troubleshoot Spanning Tree Protocols
  • 1. VSTP
  • 2. RSTP
  • 3. STP
  • 4. MSTP

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Juniper Service Provider Routing and Switching, Specialist (JNCIS-SP) Sample Questions (Q129-Q134):

NEW QUESTION # 129
Which two statements regarding GRE and IP-IP tunnels are correct? (Choose two.)

Answer: A,D

Explanation:
In Juniper Networks Junos OS,Generic Routing Encapsulation (GRE)andIP-in-IP (IP-IP)are common tunneling mechanisms used to transport packets across a network by encapsulating them within another protocol. Understanding the header structure and the limitations of these protocols is essential for proper MTU (Maximum Transmission Unit) management and security design.
Overhead (Option A):
Both GRE and IP-IP tunnels operate by adding an additional IP header to the original packet. An IP-IP tunnel (Protocol 4) adds a20-byteIPv4 header. A GRE tunnel (Protocol 47) adds the same20-bytedelivery IP header plus a minimum4-byteGRE header (totaling 24 bytes, which can increase if keys or sequencing are used).
Because these headers are added to the payload, the total size of the packet increases. This "overhead" means that if the original packet was already at the MTU limit (e.g., 1500 bytes), the encapsulated packet will exceed it, potentially leading to fragmentation or the need to adjust theTCP MSS (Maximum Segment Size).
Encryption (Option D):
Crucially, according to Juniper Service Provider documentation, neither GRE nor IP-IP provides native encryptionor data confidentiality. They are encapsulation protocols, not security protocols. The payload remains in cleartext and is visible to any device along the path. If security and encryption are required for data traversing these tunnels, they must be combined withIPsec (IP Security). While GRE is often used as the
"carrier" for IPsec (to allow multicast or dynamic routing protocols which IPsec alone does not support), the GRE protocol itself remains an unencrypted delivery mechanism. Therefore, statements A and D accurately describe the architectural behavior of these tunnel types.


NEW QUESTION # 130
Which two statements are correct about the way that BGP propagates routes by default?
(Choose two.)

Answer: B,C

Explanation:
By default, BGP will propagate routes learned from EBGP peers to other IBGP peers. However, due to the BGP split-horizon rule, routes learned from one IBGP peer are not re-advertised to another IBGP peer. This behavior is designed to prevent routing information loops within the same AS.


NEW QUESTION # 131

In the exhibit, Site A is sending traffic to Site B. R1 adds MPLS label 7166 to direct the traffic to R5. Which two criteria did R1 use to determine which label number to add to the traffic? (Choose two.)

Answer: B,D

Explanation:
In a Juniper Networks MPLS environment, the process by which a router determines how to forward traffic involves both the control plane and the data plane. When R1 (acting as an Ingress Label Edge Router, or LER) receives an IP packet from Site A destined for Site B, it must perform a lookup to decide whether to forward the packet via standard IP routing or via an MPLS Label Switched Path (LSP).
The first criterion R1 uses is thedestination address of the traffic(Option C). Upon receiving the native IP packet, R1 looks up the destination IP in its routing table (typically inet.0). If the destination matches a prefix that is associated with an LSP-such as the loopback address of R5 or a prefix reachable via R5-the router identifies the appropriate Forwarding Equivalence Class (FEC). The FEC essentially groups packets that should be forwarded in the same manner over the same path. Without identifying the destination, the router cannot map the traffic to the correct MPLS tunnel.
The second criterion is thelabel number advertisement received from R2(Option D). MPLS relies on downstream label allocation. In this topology, R2 is the immediate downstream "next hop" for R1 on the path to Site B. For the LSP to be established, R2 must signal a label to R1 using a protocol like LDP (Label Distribution Protocol) or RSVP (Resource Reservation Protocol). This label (in this case, 7166) tells R1: "If you want to send traffic to the destination associated with this LSP, wrap it in this specific label so I know how to process it." R1 does not use the source address (Option A) for standard label mapping, nor does it receive the label directly from R5 (Option B) in a hop-by-hop signaling model; it must use the label provided by its direct neighbor, R2. Therefore, by combining the destination IP (to find the path) and the label provided by the next hop (to encapsulate the packet), R1 successfully directs the traffic through the MPLS core.


NEW QUESTION # 132
You are designing an MPLS network and want to ensure that traffic traverses an LSP between PE routers that follow an explicit path through the core.
Which protocol would accomplish this task?

Answer: D

Explanation:
RSVP-TE is used to signal MPLS traffic-engineered LSPs and supports explicit path configuration. This allows you to define the exact sequence of core hops the LSP must follow between PE routers, ensuring traffic traverses the desired path rather than simply following the IGP shortest path.


NEW QUESTION # 133
By default, which two statements are correct about switch ports on a Junos device? (Choose two.)

Answer: B,C

Explanation:
On a Junos device, trunk ports are configured to receive and transmit tagged traffic only, while access ports are configured to receive and transmit untagged traffic.


NEW QUESTION # 134
......

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