Juniper JNCIA-Junos (JN0-106) Certification Preparation

JNCIA-Junos is the entry point to Juniper certification, now offered under the HPE Juniper Networking banner. It checks that you understand networking fundamentals and the Junos OS itself: the CLI, the candidate configuration, monitoring, routing and filtering. Across four days, theory alternates with labs on virtual devices and practice sets in the JN0-106 style.

The essentials

Objectives

Program

  1. Networking fundamentals
    • Switches, routers, Ethernet and Layer 2 addressing
    • IP addressing, masks, subnetting and supernetting, binary conversion
    • Longest match, CoS, connection-oriented vs connectionless protocols
  2. Junos OS and user interfaces
    • Software architecture, transit and exception traffic
    • CLI modes, help and output filtering
    • Active vs candidate configuration, rollback, comparing and loading files
    • J-Web core functions
  3. Configuration basics
    • Factory-default state and initial configuration
    • User accounts, login classes and authentication methods
    • Interface types and properties, configuration groups
    • NTP, SNMP, syslog, archival, tracing and rescue configuration
  4. Operational monitoring and maintenance
    • Show and monitor commands, interface statistics and errors
    • Tools: ping, traceroute, SSH
    • Installing and upgrading Junos OS, powering on and off
    • Root password recovery
  5. Routing, policy and firewall filters
    • Routing vs forwarding tables, route preference, routing instances
    • Static routing and why dynamic protocols matter
    • Default policies, import/export, terms and match conditions
    • Firewall filters: structure, actions, effect on packets, unicast RPF

Prerequisites

Target audience

The exam

Exam JN0-106 leads to the Junos, Associate (JNCIA-Junos) certification. It contains 65 multiple-choice questions to answer in 90 minutes, is delivered by Pearson VUE and is available in English only. It is based on Junos OS 21.2. There is no prerequisite. The certification is valid for three years and opens the way to Juniper's enterprise, security and service provider tracks.

Preparation tips

Frequently asked questions (FAQ)

JN0-105 or JN0-106: which exam should I take?

JN0-106 is the current JNCIA-Junos exam listed by Juniper. Prepare against its objectives; JN0-105 material is still useful for the fundamentals.

Is Juniper now part of HPE?

Yes. HPE completed its acquisition of Juniper Networks on 2 July 2025. The certifications are still run by Juniper under the HPE Juniper Networking name.

Is the exam available in French?

No, Juniper offers it in English only. The course itself can be delivered in French.

How long is JNCIA-Junos valid?

Three years. After that you renew it under Juniper's recertification policy.

Which course formats and languages?

Live online, in person in Casablanca or on-site at your organization, in French or English.

Securevalley training — online and in-person sessions. Contact us for pricing and registration terms.

Securevalley is not a Juniper Networks or HPE training partner. Juniper, Junos and JNCIA are trademarks of Juniper Networks, a Hewlett Packard Enterprise company.

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