JN0-364최신시험후기최신인증시험은덤프로고고싱

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Juniper JN0-364 Exam Syllabus Topics:

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

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최신 JNCIS-SP JN0-364 무료샘플문제 (Q50-Q55):

질문 # 50
In an OSPF network, what is a purpose of a designated router?

정답：D

설명：
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.


질문 # 51
Referring to the exhibit, which two statements are correct? (Choose two.)

정답：B,D


질문 # 52
What are three default BGP advertisement rules? (Choose three.)

정답：A,B,C

설명：
TheBorder Gateway Protocol (BGP)operates based on a strict set of advertisement rules designed to prevent routing loops while ensuring global reachability. These rules differ significantly depending on whether the relationship isExternal BGP (EBGP)orInternal BGP (IBGP).
1. EBGP Advertisement (Option A):In a standard EBGP scenario, a router acts as an exit/entry point for an Autonomous System. When an EBGP speaker receives a valid route from any peer (Internal or External), it will, by default, advertise that route to all of its other EBGP peers. This is the primary mechanism that allows prefixes to propagate across the global internet from one AS to another.
2. IBGP Split Horizon (Option D):
The most critical rule within an AS is theIBGP Split Horizonrule. To prevent loops within an AS, BGP dictates that a route learned from an IBGP peermust notbe advertised to any other IBGP peer. This is why BGP requires a "full mesh" of IBGP sessions or the use ofRoute Reflectorsto ensure all internal routers learn all routes. Without this rule, a route could circulate infinitely within the AS because IBGP does not update the AS_PATH attribute.
3. EBGP to IBGP Propagation (Option B):
When a router learns a route from an EBGP peer, it is permitted to advertise that route to all of its IBGP peers.
This ensures that everyone inside the network knows how to reach external destinations. However, it is important to remember that in Junos OS, theBGP Next Hopis not modified by default when sending routes to IBGP peers, often requiring a "next-hop-self" policy to ensure internal reachability.
Options C and E are incorrect because they directly contradict these fundamental BGP loop-prevention and propagation mechanisms.


질문 # 53
You want to enable a routing platform with redundant REs to switch from a primary RE to a backup RE without alerting peer nodes. Which two technologies would you use to satisfy this requirement? (Choose two.)

정답：C,D

설명：
Graceful Routing Engine Switchover (GRES) and Nonstop Active Routing (NSR) are two features used in Junos OS to provide high availability. GRES allows for the stateful failover of the Routing Engine, and NSR allows for the continuation of packet forwarding and protocol states during a Routing Engine switchover. These technologies ensure that peer nodes are not alerted during a switchover. VRRP and ISSU serve different purposes and do not apply to this specific requirement.


질문 # 54
You are configuring LDP in a service provider network. After enabling LDP on core interfaces, you notice that labels are being advertised for every loopback IPv4 address that is in your IGP.
Which label distribution mode is being used in this scenario?

정답：C

설명：
Downstream unsolicited label distribution means that an LSR advertises labels to its neighbors without receiving a specific request. In this mode, routers automatically advertise labels for all known FECs, such as loopback prefixes learned through the IGP, which results in labels being distributed for every reachable prefix.


질문 # 55
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