JN0-349 Exam Format | Course Contents | Course Outline | Exam Syllabus | Exam Objectives
Exam Specification:
- Exam Name: Enterprise Routing and Switching, Specialist (JNCIS-ENT)
- Exam Code: JN0-349
- Exam Duration: 90 minutes
- Exam Format: Multiple-choice and hands-on lab questions
- Passing Score: 65% (may vary)
Course Outline:
1. Junos OS Fundamentals
- Junos OS architecture and software components
- Junos OS installation and initial configuration
- Junos OS CLI navigation and basic operational commands
- Junos OS configuration management and troubleshooting
2. Layer 2 Ethernet Switching
- Ethernet switching concepts and operation
- Virtual LANs (VLANs) and VLAN tagging
- Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP)
- VLAN Trunking Protocol (VTP)
3. Layer 2 Transparent Bridging
- Transparent bridging concepts and operation
- MAC learning and forwarding in transparent bridging
- Transparent bridging loop prevention and troubleshooting
4. Layer 2 Authentication and Access Control
- IEEE 802.1X authentication
- MAC RADIUS authentication
- Port security and MAC limiting
5. IP Routing Essentials
- Routing concepts and protocols (RIP, OSPF, BGP)
- Routing policy and filtering
- Static routing and default routing
- Routing protocol authentication and troubleshooting
6. Routing Policy and Firewall Filters
- Routing policy concepts and structure
- Firewall filter concepts and implementation
- Stateful firewall and security zones
7. Class of Service (CoS)
- CoS components and processing
- CoS implementation and traffic control
- CoS for Layer 2 and Layer 3 traffic
Exam Objectives:
1. Understand Junos OS fundamentals and basic operational commands.
2. Configure and troubleshoot Layer 2 Ethernet switching.
3. Implement and troubleshoot Layer 2 transparent bridging.
4. Configure Layer 2 authentication and access control features.
5. Understand and configure IP routing protocols.
6. Implement routing policy and firewall filters.
7. Configure and manage Class of Service (CoS) for traffic control.
Exam Syllabus:
The exam syllabus covers the following topics (but is not limited to):
- Junos OS fundamentals
- Layer 2 Ethernet switching
- Layer 2 transparent bridging
- Layer 2 authentication and access control
- IP routing essentials
- Routing policy and firewall filters
- Class of Service (CoS)
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Juniper
JN0-349
Enterprise Routing and Switching, Specialist (JNCIS-ENT)
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Question: 32
You have an OSPF NSSA area that is also receiving IS-IS routes on the ASBR.
In this scenario, which LSA type is used to announce external IS-IS routes?
A. Type 7
B. Type 8
C. Type 1
D. Type 4
Answer: A
Question: 33
What are two interarea OSPF LSA types? (Choose two.)
A. Type 1 router LSAs
B. Type 2 network LSAs
C. Type 3 summary LSAs
D. Type 4 ASBR summary LSAs
Answer: C,D
Question: 34
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
A. The router is acting as the DR.
B. The router is acting as the BDR.
C. The router is acting as a DROther.
D. The router is not able to establish an adjacency.
Answer: C
Question: 35
Click the Exhibit button.
Which type of route is shown in the exhibit?
A. generated
B. direct
C. aggregate
D. static
Answer: A
Question: 36
Click the Exhibit button.
Which two statements about the configuration shown in the exhibit are correct? (Choose two.)
A. Two next-hop interfaces should appear in the routing table for the 172.20.112.0/24 prefix.
B. Multiple equal-cost next hops are installed in the forwarding table for the 192.168.2.0/30 prefix.
C. The route preference is the same for each static route.
D. Only the selected next-hop interface should appear in the forwarding table for the 172.20.112.0/24 prefix.
Answer: A,D
Question: 37
Which two statements about a unified ISSU are correct? (Choose two.)
A. It requires that Bidirectional Forwarding Detection be disabled.
B. It requires that graceful Routing Engine switchover be enabled.
C. It is only supported on platforms with redundant control planes.
D. It is only supported on platforms with redundant power supplies.
Answer: B,C
Question: 38
Click the Exhibit button.
Referring to the exhibit, which port will be selected as the RSTP root port on Switch-4?
A. ge-0/0/13.0
B. ge-0/0/8.0
C. ge-0/0/9.0
D. ge-0/0/12.0
Answer: D
Question: 39
Which statement is true about IP-IP tunnels?
A. The time-to-live value of the original packet Is decremented.
B. IP-IP tunnels are protocol agnostic.
C. The packet is encapsulated unchanged before entering the tunnel
D. The packet header is replaced before entering the tunnel
Answer: C
Question: 40
What are three reasons a router would send out an IS-IS link-state PDU? (Choose three.)
A. A new external route is imported from BGP.
B. The routers link to a neighbor goes down.
C. A new neighbor exists on the link.
D. The cost of a link to an existing neighbor has changed.
E. IS-IS sends link-state PDUs at random intervals.
Answer: B,C,D
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