Last Updated: Nov 04, 2026
No. of Questions: 92 Questions & Answers with Testing Engine
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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Border Gateway Protocol (BGP) | 20% | - BGP routing policies and communities - BGP attributes and path selection - IBGP / EBGP configuration and scaling |
| Topic 2: Interior Gateway Protocols (IGPs) | 20% | - IS-IS protocol operation and implementation - OSPFv2 / OSPFv3 concepts, configuration and troubleshooting - Route redistribution and routing policy |
| Topic 3: IP Multicast | 15% | - Multicast addressing and traffic flow - PIM-SM / PIM-SSM and RP mechanisms - IGMPv2 / IGMPv3 operation |
| Topic 4: Monitoring, Troubleshooting & High Availability | 10% | - VRRP and link aggregation - Protocol verification and troubleshooting tools - Graceful restart and nonstop routing |
| Topic 5: Class of Service (CoS) | 10% | - Queuing, scheduling, policing and shaping - CoS implementation for L2/L3 networks - Traffic classification and marking |
| Topic 6: Advanced Ethernet Switching & Spanning Tree | 15% | - L2 tunneling and L2PT - VLANs, trunking, MVRP and Q-in-Q - MSTP, VSTP and loop prevention |
| Topic 7: Layer 2 Authentication & Access Control | 10% | - 802.1X authentication - Port security and access control lists - MAC RADIUS and dynamic VLAN assignment |
The JN0-648 exam, officially titled Enterprise Routing and Switching, Professional (JNCIP-ENT), is the qualifying test for the Juniper Networks Certified Professional Enterprise Routing and Switching (JNCIP-ENT) certification from Juniper Networks, a credential at the Professional level. Passing it proves you have the skills employers look for in certified professionals, and it can also support progress toward related credentials such as JNCIA-Junos, JNCIS-ENT, JNCIE-ENT.
The Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) exam gives you 90-120 to work through 65 questions. That is a steady pace with little room for second-guessing, so train yourself to read each question once, flag the difficult ones, and keep moving. Before exam day, sit at least two full timed sessions in the BraindumpQuiz test engine — when the clock feels familiar, it stops being a threat.
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Active JNCIS-ENT certification Eligibility rules can change over time, so before you register, confirm the latest requirements on the official exam page: Juniper Networks JN0-648 exam overview.
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Juniper Networks recommends the following training for Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) candidates:
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The Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) syllabus is organized into 7 domains. The main areas include Advanced Ethernet Switching & Spanning Tree (15%), Interior Gateway Protocols (IGPs) (20%), and Monitoring, Troubleshooting & High Availability (10%). Scroll up to the Exam Topics section above for the complete, current outline before you plan your study schedule.
Click the Exhibit button.
You recently implemented the configuration shown in the exhibit. After committing these changes, the community devices connected to AS-1 are not able to communicate with the appropriate community devices connected to AS-2.
What must be done to allow these community devices to communicate?
Correct Answer: B 🗳️
Explanation: Only visible for BraindumpQuiz members. You can sign-up / login (it's free).
Click the Exhibit button.
You have configured MSTP in your Layer 2 network. You are having problems with it establishing correctly.
Referring to the exhibit, what is causing the problem?
Correct Answer: C 🗳️
Which three types of ports are used for Junos Fusion Enterprise? (Choose three. )
Correct Answer: B,D,E 🗳️
You will to route Layer 3 PVLAN traffic within the secondary VLAN.
What is required to accomplish this task?
Correct Answer: B 🗳️
In IS-IS advertising POUs with the overload bit has which effect?
Correct Answer: D 🗳️
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