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Juniper JN0-364 Exam Syllabus Topics:

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

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Juniper Service Provider Routing and Switching, Specialist (JNCIS-SP) 認定 JN0-364 試験問題 (Q148-Q153):

質問 # 148
Which feature allows Junos OS to perform recursive lookups for static route next hops?

正解：C

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 # 149
Which two steps are required to enable MPLS on a physical interface in Junos? (Choose two.)

正解：A、D

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 # 150
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?

正解：A

解説：
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.


質問 # 151
Referring to the exhibit. Which two statements are correct about the service provider MPLS network shown in the exhibit? (Choose two.)

正解：C、D

解説：
In a service provider MPLS network, P routers are interior routers that are used to transit MPLS- labeled packets between edge routers but do not attach or remove MPLS labels themselves.
These routers are also referred to as transit routers. They are neither ingress nor egress routers (which are typically labeled as PE routers).


質問 # 152
During MPLS forwarding, which operation describes the act of imposing a label onto an unlabeled packet?

正解：C

解説：
Label push is the MPLS operation in which a label is added to an unlabeled packet as it enters the MPLS domain. The ingress label switching router assigns the label and places it on the packet so that subsequent routers can forward it based on the MPLS label instead of the IP header.


質問 # 153
......

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