検証するJN0-364技術問題 &合格スムーズJN0-364試験対策 |更新するJN0-364テスト問題集

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Juniper JN0-364 Exam Syllabus Topics:

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

>> JN0-364技術問題 <<

JN0-364試験対策 & JN0-364テスト問題集

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Juniper Service Provider Routing and Switching, Specialist (JNCIS-SP) 認定 JN0-364 試験問題 (Q159-Q164):

質問 # 159
In an OSPF network, what is a purpose of a designated router?

正解：A

解説：
On multi-access network segments, such asEthernet, OSPF could potentially face a scalability issue. If every router on a segment formed a full adjacency with every other router, the number of adjacencies would follow the formula $n(n-1)/2$. In a segment with 10 routers, this would result in 45 adjacencies, each generating redundant flooding of Link-State Advertisements (LSAs) and excessive Hello traffic.
To solve this, OSPF elects aDesignated Router (DR)and aBackup Designated Router (BDR). According to Juniper Networks documentation, the primary purpose of the DR is to act as a central point of contact for the segment, therebyreducing OSPF traffic (Option C).
Instead of every router syncing with every other router, they all form aFull adjacencyonly with the DR and BDR. When a router (a DR-Other) has an update, it sends it to the multicast address224.0.0.6(All DR Routers). The DR then acknowledges the update and floods it to all other routers on the segment using the multicast address224.0.0.5(All OSPF Routers). This "hub-and-spoke" signaling model within the local segment significantly minimizes the bandwidth consumed by protocol overhead and reduces the CPU load on the participating routers.
It is important to note that the DR's scope is limited to the local segment; it does not "assign IDs" (Option A) nor does it flood routes to the "entire domain" (Option D), as that is the responsibility of individual routers within their respective areas.


質問 # 160
Which IS-IS adjacency state indicates that hello packets have been exchanged but the adjacency is not yet fully established?

正解：D

解説：
The initializing state indicates that IS-IS hello packets have been exchanged between neighbors and the routers have detected each other, but the adjacency has not yet progressed to the fully established state where databases are synchronized.


質問 # 161
Referring to the exhibit, what must be included in the Route1 configuration when establishing an EBGP session with the ISP?

正解：B

解説：
When establishing an EBGP session, it's necessary to specify both the local AS number and the local address that the session will use. The local address is required for establishing the TCP connection for BGP. The local AS must be specified to identify the autonomous system of the router.


質問 # 162
Which two LSA types are permitted in OSPF totally stubby areas? (Choose two.)

正解：C、D


質問 # 163
You are the administrator for two Junos routers called R1 and R2. These two routers are directly connected to each other. These two routers run IS-IS and BFD. R1 is configured to send BFD packets every 300 milliseconds. R2 is configured to send BFD packets every 400 milliseconds. In this situation, what is the expected outcome?

正解：C

解説：
In the context of Juniper Networks High Availability,Bidirectional Forwarding Detection (BFD)is a lightweight protocol designed to provide fast failure detection for the forwarding path. Unlike the slow "hello" mechanisms found in IGPs like OSPF or IS-IS, BFD can detect link or neighbor failures in sub-second intervals.
According to Juniper Networks technical documentation, BFD operates through a negotiation process. When two routers establish a BFD session, they exchange their locally configuredMinimum Transmit Intervaland Minimum Receive Intervalwithin the BFD control packets. The fundamental rule of BFD negotiation is that the routers must agree on a common timing value that accommodates the slower of the two devices to ensure stability and prevent "false positives" (detecting a failure when none exists simply because one router cannot keep up with the processing speed).
In this scenario, R1 expects to send at 300ms, while R2 is configured for 400ms. During the handshake, R1 informs R2 it is capable of 300ms, but R2 informs R1 it can only support a minimum of 400ms.
Consequently, the routers will negotiate to use theslowest of the two rates (400ms). Specifically, the transmission interval of one router is matched to the receive interval of the other. By choosing the highest common denominator (the slowest rate), the BFD session ensures that both routers have sufficient time to process incoming control packets. This negotiation allows BFD to be highly flexible in heterogeneous environments where different hardware platforms may have varying CPU capabilities for handling rapid heartbeat packets.


質問 # 164
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