JNCIP-ENT Interior Gateway Protocols Practice Question

Which Junos configuration command enables MD5 cryptographic authentication on an OSPFv2 interface?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

set protocols ospf area 0.0.0.0 interface ge-0/0/0.0 authentication md5 1 key "secret"

MD5 authentication for OSPFv2 in Junos is configured under the interface hierarchy with the 'authentication md5' statement followed by a key ID and password.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
set security ospf md5 interface ge-0/0/0.0 key "secret"
Why it's wrong here
OSPF security settings are configured under protocols ospf.
✗
set protocols ospf area 0.0.0.0 interface ge-0/0/0.0 md5-password "secret"
Why it's wrong here
This syntax is invalid.
✓
set protocols ospf area 0.0.0.0 interface ge-0/0/0.0 authentication md5 1 key "secret"
Why this is correct
This is the correct Junos syntax for OSPFv2 MD5 authentication.
✗
set protocols ospf area 0.0.0.0 interface ge-0/0/0.0 authentication-type md5
Why it's wrong here
Authentication type alone does not specify keys and ID.

About these practice questions

One of 332 original JNCIP-ENT practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

Written and reviewed by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

Last reviewed August 2026 · checked against the official Juniper Networks exam blueprint

Ready to practise?

Start a scored session and see where you stand.

Start practice session

Practice tests

Scored 10-question sessions with instant feedback and explanations.

JNCIP-ENT Practice Test 3 — 25 Questions→JNCIP-ENT Practice Test 2 — 25 Questions→JNCIP-ENT Practice Test 5 — 25 Questions→

Practice by domain

Domains are weighted differently on the real exam — spend your time where you score lowest.

Interior Gateway Protocols EVPN BGP Advanced Ethernet Switching And Spanning Tree

Practice by scenario

Filter questions by type — troubleshooting, exhibit, drag-and-drop, multi-select, and more.

Browse scenarios

Go deeper on a topic

Narrow in on a single topic rather than practising the whole bank at once.

Interior Gateway Protocols practice questions Ethernet Switching And Spanning Tree practice questions EVPN practice questions

Keep going

All Juniper Networks practice questions All JNCIP-ENT questions JNCIP-ENT practice test

This JNCIP-ENT practice question is part of Courseiva's free Juniper Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the JNCIP-ENT exam.