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Juniper JN0-650 Exam Overview:

Certification Vendor:Juniper Networks
Exam Name:Enterprise Routing and Switching, Professional (JNCIP-ENT) Exam
Exam Number:JN0-650
Passing Score:65-75%
Exam Duration:90 minutes
Exam Format:Multiple choice, Scenario-based
Related Certifications:JNCIA-Junos
JNCIS-ENT
JNCIE-ENT
Real Exam Qty:65
Certificate Validity Period:3 years
Available Languages:English
Exam Price:$300 USD
Recommended Training:Advanced Routing & Switching (ARS) Training
Exam Registration:Pearson VUE Registration
Sample Questions:Juniper JN0-650 Sample Questions
Exam Way:Online proctored or onsite at Pearson VUE test centers
Pre Condition:Active JNCIS-ENT certification
Official Syllabus URL:https://www.juniper.net/gb/en/training/certification/tracks/enterprise-routing-switching/jncip-ent.html

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Juniper JN0-650 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Interior Gateway Protocols (IGPs): This domain covers internal routing protocols operating within a single autonomous system, including OSPFv2, OSPFv3, and routing policy implementation, along with configuration, troubleshooting, and monitoring skills.
Topic 2
  • Ethernet Switching and Spanning Tree: This section covers advanced Layer 2 switching including filter-based VLANs, private VLANs, MVRP, Layer 2 tunneling via Q-in-Q and L2PT, plus MSTP and VSTP protocols.
Topic 3
  • BGP: This section focuses on Border Gateway Protocol operations including route selection, next hop resolution, BGP attributes, communities, load balancing, IPv4
  • IPv6 address families, advanced options, and routing policy implementation.
Topic 4
  • Class of Service (CoS): This domain covers QoS mechanisms in Junos including CoS processing, header fields, forwarding classes, classification, policers, schedulers, drop profiles, shaping, and rewrite rules.
Topic 5
  • IP Multicast: This domain addresses one-to-many communication using multicast routing, covering addressing, ASM vs SSM models, RPF, IGMP
  • snooping, PIM sparse-mode, rendezvous points, Anycast RP, MSDP, and routing policies.
Topic 6
  • IP Telephony Features: This section focuses on features supporting VoIP deployments including Power over Ethernet, LLDP
  • LLDP-MED protocols, and voice VLAN implementation.
Topic 7
  • Layer 2 Authentication and Access Control: This domain examines network access control mechanisms including 802.1x, MAC RADIUS, captive portal, server fail fallback, guest VLANs, and multi-method authentication considerations.

Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) Sample Questions (Q113-Q118):

NEW QUESTION # 113
Which two statements are correct about multicast routing tables? (Choose two.)

Answer: C,D

Explanation:
Junos OS uses specific routing tables for handling multicast traffic to ensure loop prevention through Reverse Path Forwarding (RPF) checks:
* Multicast RPF (Option C): The inet.0 table is the default unicast routing table. In most standard multicast deployments, Protocol Independent Multicast (PIM) performs its RPF checks against this table to determine the upstream interface toward the multicast source.
* Topology Differences (Option A): The inet.2 table is specifically designed for multicast RPF lookups when the multicast forwarding topology differs from the unicast forwarding topology. This is common in environments using Multiprotocol BGP (MBGP) where you might want multicast traffic to follow a different path than standard data traffic.
* inet.1 Role (Option B): The inet.1 table is the multicast forwarding cache. It stores (S,G) and (*,G) entries for actual packet forwarding. Routing protocols like MBGP or IS-IS do not place routes directly into inet.1; instead, PIM uses information from inet.0 or inet.2 to populate inet.1.
* IS-IS and OSPFv3 (Option D): These protocols place their IPv4/IPv6 unicast routes into inet.0 or inet6.0. They do not place routes into inet.2 "directly" unless specific RIB-group configurations or address families are enabled to share those routes for multicast RPF purposes.


NEW QUESTION # 114
You are deploying a new campus switching environment using EX Series switches that will use class of service. Regarding the use of congestion control mechanisms, which two statements are correct? (Choose two.)

Answer: B,C

Explanation:
Weighted tail drop (WTD) drops packets only after the queue reaches the configured buffer fill level threshold. The dropping behavior is deterministic based on queue occupancy.
Weighted random early detection (WRED) proactively and randomly drops packets before the queue becomes full when congestion is detected. The probability of dropping packets is influenced by the packet loss priority, helping to prevent queue saturation and global synchronization.


NEW QUESTION # 115
You have configured a BGP peering session with another router. The session states that it is in the "active" state.
Which statement is correct?

Answer: B


NEW QUESTION # 116
Exhibit

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

Answer: B,D

Explanation:
The exhibit shows the output of the command show route protocol bgp on router R1 for the prefix 172.16.10.1
/32. To determine the correct characteristics of this route, we analyze the specific BGP attributes and next-hop information provided in the routing table entry:
Multipath Parameter (Option B): The routing table shows two distinct paths for the prefix 172.16.10.1/32. The first path has two next hops (192.168.10.1 and 192.168.20.1) and is marked with the plus symbol (+) and the asterisk (*), indicating it is both an active and the best route. The presence of multiple next hops being used simultaneously for a single BGP path is a clear indication that the multipath parameter is enabled in the BGP configuration. In Junos OS, BGP multipath allows the installation of multiple equal-cost BGP paths into the forwarding table to facilitate load balancing.
Available Next Hops (Option C): The output explicitly lists two functional next hops for the active path:
192.168.10.1 via ge-1/0/0.2 and 192.168.20.1 via ge-1/0/1.3. Both show an outgoing interface, confirming that this route has two next hops available for traffic forwarding.
IBGP vs. EBGP (Option A): The BGP routes shown have an AS path of 200 I. This indicates the routes were learned from an external Autonomous System (AS 200). Furthermore, the protocol preference is 170. In Junos OS, the default preference for External BGP (EBGP) is 170, whereas the default preference for Internal BGP (IBGP) is 200. Therefore, this configuration is for EBGP, not IBGP.
Hidden Next Hops (Option D): The summary line at the top of the exhibit mentions that there are "2 hidden" routes in the inet.0 table. However, these hidden routes are not the next hops for the 172.16.10.1/32 prefix. A hidden route is a prefix that was rejected by policy or has an unreachable next hop; it is not a "hidden next hop" belonging to an active route.


NEW QUESTION # 117
Which two statements describe how a multicast enabled network prevents forwarding loops? (Choose two.)

Answer: A,B


NEW QUESTION # 118
......

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