Practice exams for JNCIA-Junos

65 questions · 90 min

  • Networking Fundamentals 12 questions
  • Configuration Basics 12 questions
  • Routing Policy and Firewall Filters 12 questions
  • User Interfaces 10 questions
  • Operational Monitoring and Maintenance 7 questions
  • Routing Fundamentals 7 questions
  • Junos OS Fundamentals 5 questions
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25 free questions across all domains, no account required.

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How to prepare for JNCIA-Junos with InfraPrep

The 65 questions cover 7 domains: Networking Fundamentals, Configuration Basics, Routing Policy and Firewall Filters, User Interfaces, Operational Monitoring and Maintenance, Routing Fundamentals, Junos OS Fundamentals. 25 of them are free, without an account.

Study mode

Answer at your pace: each answer is corrected straight away, with an explanation and the link to the documentation it relies on.

Exam mode

A timed exam of 90 minutes, with a question map to flag and come back to questions before you submit.

Results by domain

Your score is broken down by domain, so you know what to review first.

Original questions

Every question is written from the public documentation, never copied from the exam. You can contest an answer from study mode.

Sample question

Networking Fundamentals

A small office connects twelve hosts to one Ethernet LAN. No bridging features and no VLANs are configured anywhere on the LAN. A host sends a frame to the Layer 2 broadcast address. Which statement describes the scope of this traffic?

  1. All devices on the LAN are in one broadcast domain and detect the frame
  2. Each switch port is its own broadcast domain, so only the sender sees it
  3. Only hosts configured with the same IP subnet mask receive the frame
  4. The frame is dropped until every host has a matching ARP table entry
Show the answer and the explanation

Correct answer: A

The documentation states that without bridging and VLANs, all devices on the Ethernet LAN share a single broadcast domain and detect all packets on the LAN.

Source: official documentation

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