JN0-351 Practice Online | Valid JN0-351 Exam Questions

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Juniper JN0-351 Exam Overview:

Certification Vendor:	Juniper Networks
Exam Name:	Enterprise Routing and Switching, Specialist (JNCIS-ENT) Exam
Exam Number:	JN0-351
Exam Duration:	90 minutes
Exam Format:	Multiple Choice
Certificate Validity Period:	3 years
Related Certifications:	JNCIP-ENT JNCIE-ENT JNCIA-Junos
Available Languages:	English
Real Exam Qty:	65
Passing Score:	Not publicly disclosed (approx. 65%-70%)
Exam Price:	$200 USD
Recommended Training:	Juniper Learning Portal
Exam Registration:	Pearson VUE Registration
Sample Questions:	Juniper JN0-351 Sample Questions
Exam Way:	Online proctored or onsite testing center (Pearson VUE)
Pre Condition:	Valid JNCIA-Junos certification
Official Syllabus URL:	https://www.juniper.net/us/en/training/certification/tracks/enterprise-routing-switching/jncis-ent.html

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Juniper JN0-351 Exam Syllabus Topics:

Topic	Details
Topic 1	Spanning Tree: Networking professionals explore the principles and advantages of the Spanning Tree Protocol (STP) to ensure loop-free topologies in Layer 2 networks.
Topic 2	BGP: This topic focuses on the operational and conceptual elements of BGP, a cornerstone in enterprise networks.
Topic 3	OSPF: The concepts and operational details of OSPF are explored, providing tools for routing efficiency. Configuration and troubleshooting mastery ensure readiness for both the exam and complex enterprise environments.
Topic 4	Tunnels: The fundamentals of IP tunneling are emphasized, highlighting their requirements and functionalities. Mastery in configuring, monitoring, and troubleshooting tunnels equips professionals to meet the demands of the JN0-351 Exam.
Topic 5	IS-IS: Aspiring Juniper networking professionals enhance their understanding of IS-IS routing protocols. This topic equips candidates with the knowledge to configure and monitor IS-IS systems, addressing specific exam challenges and practical applications.
Topic 6	Layer 2 Security: This topic introduces Layer 2 protection mechanisms and firewall filters to fortify network security. Practical skills in configuring, monitoring, and troubleshooting these features prepare candidates to address exam objectives and real-world challenges effectively.
Topic 7	Layer 2 Switching or VLANs: This topic deepens the understanding of Layer 2 switching operations within the Junos OS, including VLAN concepts and benefits. Experienced networking professionals gain insights into configuration, monitoring, and troubleshooting techniques essential for network segmentation and efficiency.

Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions (Q149-Q154):

NEW QUESTION # 149
Exhibit

You are a network operator troubleshooting BGP connectivity.
Which two statements are correct about the output shown in the exhibit? (Choose two.)

A. The R1 is configured for AS 65400.
B. The routers are exchanging IPv4 routes.
C. The BGP session is not established.
D. Peer 10.32.1.2 is configured for AS 63645.

Answer: A,C

Explanation:
Explanation
Option B suggests that the BGP session is not established. This is correct because in the output, the state of the BGP session is shown as "Idle". In BGP, an "Idle" state means that the BGP session is not currently established1.
Option C suggests that R1 is configured for AS 65400. This is also correct because in the output, it's shown that the local AS number is 654001. The local AS number represents the Autonomous System (AS) number of the router on which you're checking the BGP session1.

NEW QUESTION # 150
Which two statements are correct about generated routes? (Choose two.)

A. Generated routes appear in the routing table as static routes
B. Generated routes show a next hop in the routing table.
C. Generated routes cannot be redistributed into dynamic routing protocols.
D. Generated routes require a contributing route.

Answer: B,D

Explanation:
A is correct because generated routes require a contributing route. A contributing route is a route that matches the destination prefix of the generated route and has a valid next hop1. A generated route is only installed in the routing table if there is at least one contributing route available2. This ensures that the generated route is reachable and useful. If there is no contributing route, the generated route is not added to the routing table2.
B is correct because generated routes show a next hop in the routing table. A generated route inherits the next hop of its primary contributing route, which is the most preferred route among all the contributing routes2. The next hop of the generated route can be either an IP address or an interface name, depending on the type of the contributing route2. The next hop of the generated route can also be modified by a routing policy3.

NEW QUESTION # 151
Which two statements are correct about using firewall filters on EX Series switches? (Choose two.)

A. You can only apply firewall filters to Layer 2 traffic on an EX Series switch.
B. You can apply firewall filters to both Layer 2 and Layer 3 traffic on an EX Series switch.
C. You can deploy both stateless and stateful firewall filters on an EX Series switch.
D. You can deploy only stateless firewall filters on an EX Series switch.

Answer: B,D

Explanation:
* A is correct because you can deploy only stateless firewall filters on an EX Series switch. A stateless firewall filter is a filter that evaluates each packet individually based on the header information, such as source and destination addresses, protocol, and port numbers 1 . A stateless firewall filter does not keep track of the state or context of a packet flow, such as the sequence number, flags, or session information
1 . EX Series switches support only stateless firewall filters, which are also called access control lists (ACLs) or packet filters 2 .
* C is correct because you can apply firewall filters to both Layer 2 and Layer 3 traffic on an EX Series switch. Layer 2 traffic is traffic that is switched within a VLAN or a bridge domain, while Layer 3 traffic is traffic that is routed between VLANs or networks 3 . EX Series switches support three types of firewall filters: port (Layer 2) firewall filters, VLAN firewall filters, and router (Layer 3) firewall filters 4 . You can apply these filters to different interfaces and directions to control the traffic entering or exiting the switch.

NEW QUESTION # 152
You manage the Layer 2 network shown in the exhibit. You experience a failure on the ge-0/0/0 link between Switch-1 and Switch-2.

Which statement is correct about the expected behavior?

A. Switch-2's ge-0/0/2 port role and state will remain as designated and forwarding
B. Switch-2 will become the root bridge for a separate RSTP topology
C. Switch-2 will remove itself from the RSTP topology
D. Switch-2's ge-0/0/2 port role and state will transition to root and forwarding

Answer: D

NEW QUESTION # 153
Which statement is correct about graceful Routing Engine switchover (GRES)?

A. When combined with NSR, routing is preserved and the new master RE does not restart rpd.
B. With no other high availability features enabled, routing is preserved and the new master RE does not restart rpd.
C. The PFE restarts and the kernel and interface information is lost.
D. GRES has a helper mode and a restarting mode.

Answer: A

Explanation:
Explanation
The Graceful Routing Engine Switchover (GRES) feature in Junos OS enables a router with redundant Routing Engines to continue forwarding packets, even if one Routing Engine fails1. GRES preserves interface and kernel information, ensuring that traffic is not interrupted1. However, GRES does not preserve the control plane1.
To preserve routing during a switchover, GRES must be combined with either Graceful Restart protocol extensions or Nonstop Active Routing (NSR)1. When GRES is combined with NSR, nearly 75 percent of line rate worth of traffic per Packet Forwarding Engine remains uninterrupted during GRES1. Any updates to the primary Routing Engine are replicated to the backup Routing Engine as soon as they occur1.
Therefore, when GRES is combined with NSR, routing is preserved and the new master RE does not restart rpd1.

NEW QUESTION # 154
......

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