Boost Your Confidence with Juniper JN0-364 Service Provider Routing and Switching, Specialist (JNCIS-SP) Test

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Juniper JN0-364 Exam Syllabus Topics:

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

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Juniper Service Provider Routing and Switching, Specialist (JNCIS-SP) Sample Questions (Q73-Q78):

NEW QUESTION # 73
Which two statements are correct when using LDP? (Choose two.)

Answer: C,D

Explanation:
With Label Distribution Protocol (LDP), a full mesh of label-switched paths (LSPs) is automatically created between all LDP-enabled routers, and these paths are reflected in the inet.3 table. LDP LSPs are set up when LDP is enabled on interfaces connecting routers in an MPLS network.


NEW QUESTION # 74
Click the Exhibit button. All devices in the network are configured correctly and the path requirements are valid. Referring to the exhibit, which two statements are correct? (Choose two.)

Answer: A,D

Explanation:
According to the exhibit, the primary LSP is configured with a strict path via R2 to R4. Since the configuration shows valid next-hops and there is no indication of any issues, the primary LSP will be signaled and its state will be up. The secondary LSP with any-path is also configured and will be signaled as a backup; therefore, its state will be up as well, ready to take over if the primary fails.


NEW QUESTION # 75
Exhibit:

Referring to the exhibit, you have configured R1, R2, R3, and R4 to be a part of OSPF area 0 and you have connected them to a broadcast segment. Assuming all four routers come online within one minute of each other, which router becomes the DR and which router becomes the BDR?

Answer: C

Explanation:
In OSPF networks, when multiple routers are connected to a shared multi-access broadcast segment (like an Ethernet switch), they undergo an election process to select aDesignated Router (DR)and aBackup Designated Router (BDR). This mechanism is essential for reducing the number of adjacencies and limiting the volume of Link State Advertisement (LSA) flooding on the segment.
The OSPF election process follows a strict hierarchy based on the following criteria:
* Interface Priority:The router with the highest OSPF interface priority is elected as the DR. The router with the second-highest priority becomes the BDR. In Junos, the default priority is 128, but it can be manually configured between 0 and 255.
* Router ID:If there is a tie in priority, the router with the numerically highest Router ID (RID) wins the election.
Analyzing the configuration provided in the exhibit:
* R1:Priority 200, Router-ID 192.168.1.1
* R2:Priority 100, Router-ID 192.168.1.2
* R3:Priority 50, Router-ID 192.168.1.3
* R4:Priority 90, Router-ID 192.168.1.4
Comparing the priority values,R1 has the highest priority (200)and therefore becomes theDR. The next highest priority value among the remaining routers is100, which belongs to R2, making it theBDR. Although R4 has a higher Router ID than R2, the priority value is evaluated first and takes precedence.
Since all routers came online within a short window (one minute), they participate in the same election cycle, ensuring the configured priorities dictate the outcome rather than "first-come, first-served" preemption behavior common in OSPF once a DR is already established.


NEW QUESTION # 76
During OSPF neighbor establishment, which packet type is used to describe the contents of the link-state database?

Answer: B

Explanation:
In theOSPF (Open Shortest Path First)protocol, ensuring that all routers within an area have a synchronized Link-State Database (LSDB)is fundamental to building a consistent loop-free topology. During the adjacency formation process-specifically when transitioning from theExStartstate to theExchangestate- routers must determine what information they are missing from their neighbors without sending the entire database at once, which would be highly inefficient.
TheDatabase Description (DBD)packet, also known as a DDP, is the mechanism used for this summary exchange. According to Juniper Networks technical documentation, the DBD packet does not contain full Link-State Advertisements (LSAs). Instead, it contains only theLSA headers, which include the LSA type, the ID of the advertising router, and the sequence number.
By exchanging these headers, a Juniper router can compare the neighbor's database summary against its own local LSDB. If the router identifies a header in the DBD packet that represents a newer or missing entry, it records that LSA in its "Link-State Request List." This collaborative "handshake" ensures that only the necessary, updated information is requested in the subsequentLink-State Request (LSR)phase. It is important to distinguish this from theLink-State PDU (LSP)mentioned in Option D, which is actually the term used in the IS-IS protocol, not OSPF. In OSPF, the functional unit is the LSA, and the transport vehicle for the initial summary is the DBD packet. This methodical synchronization is what allows OSPF to scale effectively in large service provider environments.


NEW QUESTION # 77
In IS-IS, what would you use to control which external routes are installed in the routing table?

Answer: D

Explanation:
An import policy is used to control which routes learned from a routing protocol are accepted into the routing table. In IS-IS, applying an import policy allows the router to filter or modify external routes before they are installed in the routing table.


NEW QUESTION # 78
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