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Last Updated: Nov 04, 2026

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Juniper JN0-648 Practice Q&A's

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Certification exams change, and so do we. Your JN0-648 purchase from BraindumpQuiz includes 365 days of free updates, so your Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) practice questions always reflect the current 2026 syllabus.

Juniper JN0-648 Exam Syllabus Topics:

SectionWeightObjectives
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 Multicast15%- Multicast addressing and traffic flow
- PIM-SM / PIM-SSM and RP mechanisms
- IGMPv2 / IGMPv3 operation
Topic 4: Monitoring, Troubleshooting & High Availability10%- 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 Tree15%- L2 tunneling and L2PT
- VLANs, trunking, MVRP and Q-in-Q
- MSTP, VSTP and loop prevention
Topic 7: Layer 2 Authentication & Access Control10%- 802.1X authentication
- Port security and access control lists
- MAC RADIUS and dynamic VLAN assignment

Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) Exam FAQs and Straight Answers

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.

You need Variable, approx 65-70% to pass, and the official registration fee is $400 USD. Fall short and you pay that fee in full again for every retake, which makes solid preparation the cheaper option by far. Work through the BraindumpQuiz practice questions until you score comfortably above the passing mark, then book your seat.

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.

You can book your JN0-648 exam through any of these official registration channels:

The exam is delivered as Delivered via Pearson VUE test centers or online proctored, so you can pick the option that fits your schedule when you book.

Juniper Networks recommends the following training for Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) candidates:

Pair that training with the 92 practice questions from BraindumpQuiz and you can check your readiness topic by topic before exam day.

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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.

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

Question #1

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?

  • A. You must configure an isolation VLAN ID under the vlan-pri VLAN on both switches.
  • B. You must configure the ge-0/0/1 interface on both switches the inter-switch links.
  • C. You must configure an isolation VLAN ID under the vlan-pri vlan on the AS-2 switch.
  • D. You must configure the ge-0/0/10 interface on AS-1 as the inter-switch link.
  • E. You must configure to allow the ge-0/0/1 interface on AS-1 as the inter-switch.
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

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Question #2

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?

  • A. The region name is not correct
  • B. The revision number is the same on both devices
  • C. The MSTI-to-VLAN mapping does not match
  • D. You must assign a context ID number other than zero
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #3

Which three types of ports are used for Junos Fusion Enterprise? (Choose three. )

  • A. authenticated port
  • B. cascade port
  • C. designated port
  • D. uplink port
  • E. extended port
Reveal Solution  Discussion  0

Correct Answer: B,D,E  🗳️

Question #4

You will to route Layer 3 PVLAN traffic within the secondary VLAN.
What is required to accomplish this task?

  • A. an FBF policy
  • B. an IRB
  • C. a community VIAN
  • D. an isolated VLAN
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #5

In IS-IS advertising POUs with the overload bit has which effect?

  • A. The ISIS adjacencies become passive
  • B. The IS-IS adjacencies enter the "new" state
  • C. The local device's POUs are marked with a metric of 65535
  • D. The local device will no longer be used for transit traffic
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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