Juniper Networks Certified Professional Enterprise Routing and Switching (JNCIP-ENT)

Here you have the best Juniper JN0-643 practice exam questions

You have 221 total questions across 45 pages (5 per page)
These questions were last updated on February 13, 2026
This site is not affiliated with or endorsed by Juniper.

Question 1 of 221

Which connection method do OSPF routers use to communicate with each other?

IP protocol number 89

TCP port 179

UDP port 179

IP protocol number 6

Question 2 of 221

Which statement is true about default BGP route redistribution behavior?

IBGP-learned routes are advertised only to other IBGP peers.

EBGP-learned routes are redistributed into any IGPs.

EBGP-learned routes are advertised only to other EBGP peers.

EBGP-learned routes are advertised to other IBGP and EBGP peers.

Question 3 of 221

In a PIM-SM network, which type of node helps to build a tree towards an unknown multicast source?

DIS

BSR

Question 4 of 221

Which statement is true about MVRP?

It allows you to split a broadcast domain into multiple isolated broadcast subdomains.

It dynamically manages VLAN registration in a LAN.

It maps multiple independent spanning-tree instances onto one physical topology.

It is a Layer 2 protocol that facilitates network and neighbor discovery.

Question 5 of 221

Which statement is true about LLDP?

It allows you to split a broadcast domain into multiple isolated broadcast subdomains.

It dynamically manages VLAN registration in a LAN.

It maintains a separate spanning-tree instance for each VLAN.

It is a Layer 2 protocol that facilitates network and neighbor discovery.

About the Juniper JN0-643 Certification Exam

About the Exam

The Juniper JN0-643 (Juniper Networks Certified Professional Enterprise Routing and Switching (JNCIP-ENT)) validates your knowledge and skills. Passing demonstrates proficiency and can boost your career prospects in the field.

How to Prepare

Work through all 221 practice questions across 45 pages. Focus on understanding the reasoning behind each answer rather than memorizing responses to be ready for any variation on the real exam.

Why Practice Exams?

Practice exams help you familiarize yourself with the question format, manage your time, and reduce anxiety on the test day. Our JN0-643 questions are regularly updated to reflect the latest exam objectives.