Juniper JN0-106 JNCIA-Junos Exam Practice Questions, practice question pack
JUNIPER · JN0-106

Juniper JN0-106 JNCIA-Junos Exam Practice Questions

98 questionsPDF by emailUpdated September 2026

US$39

Try 10 questions free

Card, Apple Pay or Google Pay. Your PDF is sent by email as soon as you check out.

Pass or your money backFail the exam after using this pack and we refund it. How the guarantee works
Category:
TRY BEFORE YOU BUY

Three of the 98 questions in this pack

Question 1

Which two statements are correct regarding Layer 2 network switches? (Choose two.)

  1. Switches are susceptible to traffic loops.
  2. Switches flood broadcast traffic.
  3. Switches do not learn MAC addresses.
  4. Switches create a single collision domain.
Show answer and explanation

Correct answer: A, B

A. Switches are susceptible to traffic loops. B. Switches flood broadcast traffic. Switches operate at Layer 2 and are susceptible to traffic loops when redundant paths exist without spanning tree protocols in place. Switches flood broadcast traffic out all ports except the incoming port because they do not have routing intelligence. Switches actively learn MAC addresses from source addresses of frames they receive and build MAC address tables. Switches create multiple collision domains (one per port), not a single collision domain.

Why the other options are wrong

  • C. Switches do learn MAC addresses by examining source addresses in incoming frames.
  • D. Switches create multiple collision domains, one for each port, not a single domain.

Question 2

How many usable hosts are in a /24 subnet mask?

  1. 250
  2. 254
  3. 255
  4. 256
Show answer and explanation

Correct answer: B. 254

A /24 subnet mask provides 8 bits for host addressing, yielding 2^8 = 256 total addresses. Of these, one address is reserved for the network address and one for the broadcast address, leaving 256 - 2 = 254 usable host addresses.

Why the other options are wrong

  • A. 250 is incorrect; it accounts for an extra 4 reserved addresses that do not exist in standard subnetting.
  • C. 255 is incorrect; this fails to account for the broadcast address that cannot be assigned to a host.
  • D. 256 is the total number of addresses in a /24, not the usable host count.

Question 3

What are two fiber-optic connector types? (Choose two.)

  1. LC
  2. RJ-45
  3. SC
  4. BNC
Show answer and explanation

Correct answer: A, C

A. LC C. SC LC (Lucent Connector) and SC (Subscriber Connector) are both standard fiber-optic connector types widely used in telecommunications and data center environments. RJ-45 is a twisted-pair copper connector used for Ethernet, not fiber. BNC is a coaxial cable connector, not a fiber-optic connector.

Why the other options are wrong

  • B. RJ-45 is a copper Ethernet connector, not a fiber-optic connector type.
  • D. BNC is a coaxial connector used with copper cabling, not fiber-optic cabling.

See all 10 free questions Get the full pack, US$39

98 practice questions for Juniper Networks Certified Associate, Junos (JNCIA-Junos), exam JN0-106, with full explanations.

Every question comes with the correct answer, the reasoning behind it, and a short note on why each wrong option is wrong. Work through it once with the answers, then again with the questions-only copy under exam conditions.

  • 98 questions mapped to the JN0-106 exam objectives
  • Answers and explanations for every question, including the wrong options
  • A questions-only PDF for timed practice runs
  • Instant delivery by email the moment you check out
  • Free monthly updates for as long as the exam is live
  • Pass or your money back

A JN0-106 attempt costs US$200. This pack is US$39, paid once.

Try 10 questions free before you buy.

Last updated September 2026 · 98 questions

What makes the JNCIA-Junos hard

JN0-106 is the current JNCIA-Junos exam. It replaced JN0-105 on 5 April 2026, keeps the same 65 question, 90 minute format, and is the single prerequisite for every Juniper track above it: Enterprise, Service Provider, Data Center, Security, Cloud and Automation. Since the HPE acquisition the programme is branded HPE Juniper Networking, but the exam, the objectives and the Junos OS 21.2 baseline are unchanged.

The objectives fall into seven areas: networking fundamentals covering the OSI and TCP/IP models and IPv4 and IPv6 addressing; Junos OS fundamentals covering the control and forwarding plane split; user interfaces covering the CLI and J-Web; configuration basics covering candidate and active configuration, commit and rollback; operational monitoring and maintenance; routing fundamentals covering routing and forwarding tables and the basics of OSPF and BGP; and routing policy and firewall filters. Juniper does not publish weightings or a fixed passing score, so every objective is fair game.

This pack has 98 practice questions for the JN0-106 JNCIA-Junos exam.

About the exam

JN0-106 earns the JNCIA-Junos certification and is the prerequisite for Juniper’s specialist, professional and expert tracks. It covers networking fundamentals, Junos OS fundamentals, user interfaces, configuration basics, operational monitoring and maintenance, routing fundamentals, and routing policy and firewall filters, on Junos OS 21.2. There are no prerequisites.

Exam domains

  • Networking fundamentals
  • Junos OS fundamentals
  • User interfaces
  • Configuration basics
  • Operational monitoring and maintenance
  • Routing fundamentals
  • Routing policy and firewall filters

Juniper does not publish weightings for these objectives.

65 multiple-choice questions, 90 minutes, US$200 per attempt, Pearson VUE test centre or OnVUE online, certification valid for three years. Juniper does not publish a fixed passing score.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Questions before you buy

What do I get when I buy the Juniper JN0-106 JNCIA-Junos pack?

98 practice questions as a PDF, each with the correct answer, a full explanation and a note on why the other options are wrong, plus a separate questions-only PDF for timed practice.

How quickly do I receive it?

Your PDF is prepared and sent to your email address after checkout, and you get a confirmation as soon as it is on its way.

Is there a free sample?

Yes. Ten questions from this pack, with answers and explanations, are free on this page and as a PDF, so you can judge the quality before you pay.

Are updates included?

Yes. The pack is updated every month for as long as the exam is live, and updates are free for everyone who has bought it.

What if I fail the exam?

We refund the pack. Sit the exam 7 to 30 days after buying, then send your official score report within 7 days of the exam date, as set out in the refund policy.

Can I share it with colleagues?

Each purchase is licensed to one person. For a team, school or training organisation, email support@certstash.com for a licence that fits.

Related products