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Juniper JN0-364 Exam Syllabus Topics:

SectionObjectives
Topic 1: OSPF and IS-IS Routing Protocols- OSPF configuration and troubleshooting
  • 1. Areas and LSAs
    • 2. Adjacency and neighbor states
      - IS-IS operation in service provider networks
      • 1. Levels and routing hierarchy
        • 2. LSP and SPF calculation
          Topic 2: BGP and Routing Policy- BGP fundamentals
          • 1. eBGP and iBGP operations
            • 2. Attributes and path selection
              - Routing policy control
              • 1. Import/export policies
                • 2. Route filtering and manipulation
                  Topic 3: Troubleshooting and Operations- Performance and monitoring
                  • 1. System logging and alarms
                    • 2. Traffic analysis basics
                      - Network troubleshooting methodology
                      • 1. Protocol verification tools
                        • 2. Junos operational commands
                          Topic 4: Service Provider Architecture & Junos Fundamentals- Service provider network design basics
                          • 1. Core, edge, and access architecture
                            • 2. Scalability considerations
                              - Junos OS routing fundamentals
                              • 1. Junos CLI and configuration hierarchy
                                • 2. Routing table and forwarding concepts
                                  Topic 5: MPLS and Service Provider Technologies- MPLS fundamentals
                                  • 1. Label switching and forwarding
                                    • 2. LDP operations
                                      - VPN services
                                      • 1. Layer 2 VPN overview
                                        • 2. Layer 3 VPN concepts

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                                          JN0-364最新な問題集、JN0-364英語版

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                                          Juniper Service Provider Routing and Switching, Specialist (JNCIS-SP) 認定 JN0-364 試験問題 (Q103-Q108):

                                          質問 # 103
                                          What are three extension headers supported by IPv6? (Choose three.)

                                          正解：A、C、D

                                          解説：
                                          One of the most significant architectural improvements in IPv6 is the move from a complex, variable-length header (as seen in IPv4) to a streamlined, fixed-length base header of 40 bytes. Additional functionality that was previously handled by "Options" in IPv4 is now moved toExtension Headers, which are inserted between the IPv6 base header and the upper-layer protocol (TCP/UDP).
                                          According to Juniper Networks technical documentation and RFC 8200, the following are valid IPv6 Extension Headers:
                                          * Hop-by-Hop Options (Option B):This header carries optional information that must be examined by every node along the delivery path. It is used for features like the Router Alert and Jumbo Payload options.
                                          * Fragment (Option E):Unlike IPv4, where any router can fragment a packet, in IPv6, fragmentation is performed only by the source node. The Fragment header contains the information necessary for the destination to reassemble the packet (Offset, Identification, and More Fragments flag).
                                          * Destination Options (Option A):This header carries information intended only for the destination node. It can appear twice: once before a routing header and once after.
                                          Why other options are incorrect:
                                          * Protocol (Option C):In IPv4, this was a field in the header. In IPv6, this is replaced by theNext Header field, which identifies the type of the following header (whether it's an extension header or the upper- layer protocol).
                                          * Header Checksum (Option D):This field was entirely removed in IPv6. IPv6 relies on the data link layer (Ethernet) and the transport layer (TCP/UDP) to perform error detection, significantly reducing the processing overhead for routers in the core of a service provider network.


                                          質問 # 104
                                          A service provider is onboarding a new enterprise customer that operates multiple branch offices, each with its own set of VLANs. The customer requires transparent Layer 2 connectivity between sites while maintaining separation of internal VLANs. The provider must also ensure that customer VLAN identifiers do not conflict with other customers on the shared infrastructure. Which solution would provide the desired results?

                                          正解：C

                                          解説：
                                          In a service provider environment,Q-in-Q tunneling(also known as 802.1ad or double-tagging) is the standard solution for transporting multiple customer VLANs over a shared provider backbone while maintaining total separation.
                                          According to Juniper Networks documentation, Q-in-Q works by adding a second 802.1Q tag (theService Provider tagor S-tag) to the customer's already tagged frames (theCustomer tagor C-tag). This creates a
                                          "tunnel" at Layer 2. This solution specifically addresses all the customer's requirements:
                                          * Transparent Layer 2 Connectivity:Because the provider simply encapsulates the customer's frames, the customer's internal BPDU traffic (like Spanning Tree) and VLAN tags are preserved and delivered transparently to the remote site.
                                          * Separation of Internal VLANs:The customer can run their own internal VLAN IDs (1-4094) without the provider needing to know or manage them.
                                          * Conflict Avoidance:Different customers on the same provider infrastructure are assigned unique S- tags. Even if two different customers both use "VLAN 10" internally, they remain isolated because their traffic is encapsulated in different provider S-tags.
                                          Why other options are incorrect:
                                          * Layer 3 VPN (Option B):While MPLS L3VPNs are common, they provide Layer 3 (IP) connectivity, not the "transparent Layer 2" connectivity requested.
                                          * GRE Tunnels (Option C):GRE is a Layer 3 encapsulation and does not natively provide the transparent VLAN bridging required for a multi-site Layer 2 service.
                                          * NAT/Firewall (Option D):These are security and address-translation services for internet access and do not facilitate site-to-site Layer 2 bridging.


                                          質問 # 105
                                          You must ensure that your routing platform with redundant REs continues to forward packets, even if one RE fails.
                                          Which technology would you use to accomplish this task?

                                          正解：B

                                          解説：
                                          Graceful Routing Engine Switchover (GRES) ensures that packet forwarding continues when a Routing Engine fails by keeping the Packet Forwarding Engine active during the switchover. The backup Routing Engine takes control without interrupting the forwarding process, allowing traffic to continue flowing through the device.


                                          質問 # 106
                                          Which two steps are required to enable MPLS on a physical interface in Junos? (Choose two.)

                                          正解：A、C

                                          解説：
                                          To enable MPLS on a physical interface in Junos, the family mpls statement must be added to the interface configuration. Additionally, the interface itself must be specified under the protocols mpls section of the configuration.


                                          質問 # 107
                                          What information is determined by using the AS path attribute included in the BGP update message? (Choose two.)

                                          正解：A、D


                                          質問 # 108
                                          ......

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