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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Multiprotocol Label Switching (MPLS) | 12-18% | - LDP and RSVP - Terminology and forwarding - Configuration and monitoring - Segment routing basics - Labels and LIB |
| Topic 2: Border Gateway Protocol (BGP) | 20-25% | - IBGP and EBGP - Basic operation and message types - Policy and route filtering - Path selection and attributes - Configuration and troubleshooting |
| Topic 3: Tunnels | 5-8% | - GRE and IP-IP tunnels - Tunnel configuration and usage |
| Topic 4: IPv6 | 8-12% | - Address types and format - Static and dynamic routing - OSPFv3 and BGP for IPv6 - Autoconfiguration |
| Topic 5: Protocol-Independent Routing | 10-15% | - Martian addresses - Routing instances and RIB groups - Load balancing - Static, aggregate, and generated routes - Filter-based forwarding |
| Topic 6: Open Shortest Path First (OSPF) | 15-20% | - Areas and router types - LSA types and operation - Link-state database - Configuration and troubleshooting |
| Topic 7: Spanning Tree Protocols | 8-12% | - Port roles and states - Configuration and convergence - BPDU and protection features - STP, RSTP, MSTP, VSTP |
| Topic 8: Intermediate System to Intermediate System (IS-IS) | 10-15% | - Adjacencies and levels - Metrics and wide metrics - Configuration and monitoring - PDUs and TLVs |
| Topic 9: Layer 2 Bridging and VLANs | 8-12% | - Service provider switching features - VLANs and trunking - Bridging concepts |
| Topic 10: High Availability | 5-8% | - NSR and GRES concepts - Nonstop active routing - Graceful restart |
このインタネット時代において、JuniperのJN0-364資格証明書を持つのは羨ましいことで、インテリとしての印です。どこからJN0-364試験の優秀な資料を探すできるか？では、我々社Fast2testのJN0-364問題集を選んでみてくださいませんか。この小さい試すアクションはあなたが今までの最善のオプションであるかもしれません。
質問 # 28
Which feature allows Junos OS to perform recursive lookups for static route next hops?
正解：B
解説：
In standard routing, astatic routeis typically considered valid only if the specified next-hop IP address is directly reachable on a local subnet. However, in complex service provider designs, the next-hop might be a
"distant" IP address that is reachable through another route (such as a BGP route or another static route). This process of looking up a next-hop within another routing entry is calledrecursive lookup.
In Junos OS, theresolve (Option A)parameter is explicitly used to enable this behavior for static routes.
According to Juniper technical documentation, when you append the resolve keyword to a static route configuration, you are instructing the Routing Engine to search the routing table to find a path to that distant next-hop.
For example:
set routing-options static route 10.1.1.0/24 next-hop 192.168.100.1 resolve If 192.168.100.1 is not on a local interface but is reachable via an OSPF route, the router will "resolve" the path and install the 10.1.1.0/24 route into the forwarding table using the OSPF path's exit interface.
Why other options are incorrect:
* Discard (Option B)andReject (Option C)are "next-hop types" used to drop traffic, either silently (discard) or by sending an ICMP unreachable message (reject).
* Next-table (Option D)is used forInter-VRF routing, where the router is told to look up the destination in a completely different routing instance (like a VRF table), which is a different architectural function than a recursive next-hop lookup within the same table.
質問 # 29
You configured an aggregated Ethernet bundle between R1 and R2. Unfortunately, the bundle is not working correctly.
Referring to the exhibit, which configuration change will solve this issue?
正解：D
質問 # 30 
Referring to the exhibit, which protocol would automatically create a full mesh of label-switched paths between MPLS-enabled routers?
正解：A
解説：
In Juniper Networks Junos OS, theLabel Distribution Protocol (LDP)is specifically designed to automate the creation of Label Switched Paths (LSPs) based on the information provided by the underlying Interior Gateway Protocol (IGP), such as OSPF or IS-IS. When LDP is enabled on a set of interfaces within an OSPF area (as shown in the exhibit with Area 0.0.0.0), it automatically discovers neighbors and exchanges label mappings for all known unicast routes in the routing table.
The defining characteristic of LDP in this context is its "topology-driven" nature. Unlike RSVP (Resource Reservation Protocol), which typically requires the manual configuration of each LSP ingress point and destination, LDP follows the IGP's shortest path tree to automatically build afull meshof LSPs between all participating routers. This means that every Provider Edge (PE) and Provider (P) router in the exhibit-PE1, PE2, PE3, P1, P2, and P3-will establish label-switched connectivity to every other router without the administrator having to define individual tunnels.
LDP accomplishes this through a downstream-unsolicited label distribution mode by default in Junos. Each router assigns a local label for its loopback address and other prefixes and advertises these to its neighbors.
Because every router is performing this action for every reachable prefix in the OSPF domain, a complete fabric of label-switched paths is formed. While RSVP is more robust for traffic engineering and bandwidth reservation, LDP is the preferred protocol for creating a simple, scalable full mesh of LSPs for applications like Layer 3 VPNs or internal BGP tunneling where complex path manipulation is not required. BFD is a failure detection protocol, and BGP is used for service signaling, making LDP the only correct choice for automatic mesh creation.
質問 # 31
Exhibit:
You must configure the router called ROUTER_1 to take all valid prefixes learned from internal BGP peers in AS 64523, and then re-advertise them to other internal BGP peers in the same autonomous system.
Referring to the exhibit, which configuration must you deploy on ROUTER_1 to accomplish this task?
正解：C
解説：
In theBorder Gateway Protocol (BGP), theSplit Horizonrule is a fundamental loop-prevention mechanism for internal sessions. This rule dictates that a BGP speaker must not advertise a route learned from anInternal BGP (IBGP)peer to any other IBGP peer within the same Autonomous System (AS). This ensures that routes do not circulate infinitely inside a network, as IBGP does not modify the AS_PATH attribute. Consequently, to maintain full reachability, a network normally requires a "full mesh" of IBGP sessions, where every BGP- speaking router is directly peered with every other router.
In the provided exhibit,ROUTER_1is part of AS 64523. The requirement is for ROUTER_1 to take prefixes learned from its internal peers and re-advertise them to other internal peers in the same AS. This behavior is a direct violation of the standard Split Horizon rule. According to Juniper Networks technical documentation, the standard solution to scale IBGP without a full mesh is to configureRoute Reflection.
When a router is configured as aRoute Reflector (RR), it is permitted to "reflect" (re-advertise) routes learned from one IBGP peer to another. In Junos OS, the mechanism to enable Route Reflection is to configure acluster IDwithin the BGP group. By adding the cluster keyword followed by a unique 32-bit identifier (usually the router's loopback address) to the internal BGP group configuration, the router assumes the role of an RR. It then follows specific reflection rules:
* Routes learned from anEBGP peerare reflected to all IBGP peers.
* Routes learned from aRoute Reflector Clientare reflected to all other clients and non-clients.
* Routes learned from anon-clientare reflected to all clients.
Option A is incorrect because BGP advertisement rules are hard-coded; a standard export policy cannot override the Split Horizon rule. Option C handles traffic engineering tags but does not enable route reflection.
Option D would change the session to EBGP, which does not address the internal reachability requirement within AS 64523. Therefore, configuring the cluster ID is the only valid way to achieve the desired re- advertisement behavior.
質問 # 32
Referring to the exhibit, which statement is true about VRRP?
正解：B
解説：
The exhibit shows the show vrrp summary output from two routers, with both routers listing the state of their VRRP group as master. VRRP allows for multiple routers to share a virtual IP address and a virtual MAC address, but usually, only one router is the master at any given time while others are in backup state. However, in some configurations, VRRP can operate in an active/active mode where multiple routers handle traffic simultaneously for load sharing. Since both routers show the state as master and there is no evidence of misconfiguration in the virtual IP addresses or priority, it indicates that VRRP is likely functioning in an active/active setup.
質問 # 33
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