JNCIA-Junos
Juniper JNCIA-Junos (JN0-106)
The Juniper Networks Certified Associate – Junos (JNCIA-Junos, exam JN0-104) is the entry-level credential for the Juniper Networks certification program. It validates foundational knowledge of the Junos operating system architecture, networking fundamentals, CLI usage, and basic device configuration. JNCIA-Junos is the prerequisite for all Juniper specialist tracks including JNCIS-ENT, JNCIS-SP, and JNCIS-SEC.
JNCIA-Junos Exam Overview
| Detail | Information |
|---|---|
| Full Name | Juniper JNCIA-Junos (JN0-106) |
| Governing Body | Juniper Networks |
| Number of Questions | 65 |
| Time Limit | 90 minutes |
| Category | IT Certifications |
| C3RT App Available On | iPhone, iPad, and Mac |
| Official Source | Juniper Networks official website ↗ |
JNCIA-Junos Content Areas and Domains
| Domain / Content Area | Exam Weight |
|---|---|
| Networking Fundamentals | 23% |
| Junos OS Fundamentals | 26% |
| User Interface Options | 5% |
| Junos Configuration Basics | 17% |
| Operational Monitoring and Maintenance | 14% |
| Routing Fundamentals | 15% |
Domain weights are approximate and based on the Juniper Networks content outline. Always verify at the official source before your exam.
Topics Covered
- ✓ OSI Model, TCP/IP, and Ethernet Fundamentals
- ✓ Junos OS Architecture, Routing Engine, Packet Forwarding Engine, microkernel
- ✓ Junos CLI, operational and configuration modes, hierarchy, commit model
- ✓ J-Web Interface Navigation
- ✓ Initial Junos Device Configuration (interfaces, hostname, system settings)
- ✓ Routing Concepts, Static Routes, RIB, FIB, route preference
- ✓ Operational Monitoring, show commands, logging, system events
- ✓ Junos Software Maintenance, upgrade, rollback, rescue configuration
How C3RT Helps You Pass the JNCIA-Junos
Adaptive Practice
Questions adapt to your weak areas automatically so every study session on the JNCIA-Junos is time well spent.
Diagnostic Mocks
Full-length mock exams timed to the real JNCIA-Junos format with detailed score breakdowns by topic.
Mistake Bank
Every wrong answer is saved for targeted re-drill. The system resurfaces your mistakes until they stick.
Native on iOS & Mac
Built with SwiftUI, not a web wrapper. Instant load, offline support, hardware-speed rendering.
Sample JNCIA-Junos Practice Questions
Q1.In the TCP/IP model, which layer is responsible for providing logical addressing and path determination across multiple networks, and how does this compare to the OSI model?
- Internet layer; it corresponds to the Network layer (Layer 3) in the OSI model.Correct
- Transport layer; it corresponds to the Session layer (Layer 5) in the OSI model.
- Network Access layer; it corresponds to the Data Link layer (Layer 2) in the OSI model.
- Application layer; it corresponds to the Presentation layer (Layer 6) in the OSI model.
The Internet layer in the TCP/IP model is responsible for logical addressing (IP addressing) and path determination, which maps to the Network layer (Layer 3) in the OSI model. Options B, C, and D incorrectly match TCP/IP layers with OSI layers that do not provide addressing and routing functions.
Q2.You want to view the available interfaces on a Junos device using the CLI. Which command will provide a concise summary of the device interfaces and their statuses?
- 'show interfaces terse'Correct
- 'show interfaces detail'
- 'show chassis hardware'
- 'show system interfaces'
'show interfaces terse' provides a brief overview of all interfaces and their status, ideal for quick checks. Option 1 shows detailed interface information but is more verbose. Option 2 lists hardware components, not interface status. Option 3 is invalid as 'show system interfaces' is not a recognized command.
Q3.A standard ACL in Junos is intended to filter traffic based on which of the following criteria?
- Source IP address onlyCorrect
- Source and destination IP addresses
- Source IP address and protocol
- Source IP, destination IP, and port number
Standard ACLs filter based solely on the source IP address. Extended ACLs allow filtering on source and destination IP addresses, protocols, and port numbers. Therefore, options involving destination IP or ports are incorrect for standard ACLs.
JNCIA-Junos Frequently Asked Questions
What does JNCIA-Junos stand for?
JNCIA-Junos stands for Juniper JNCIA-Junos (JN0-106). It is administered by Juniper Networks.
Who administers the JNCIA-Junos?
The Juniper JNCIA-Junos (JN0-106) (JNCIA-Junos) is administered by Juniper Networks. For official information, visit the Juniper Networks website.
How many questions is the JNCIA-Junos?
The JNCIA-Junos consists of 65 questions. Candidates are given 90 minutes to complete the exam.
Is JNCIA-Junos a good starting point for network engineering?
Yes, for engineers working with Juniper equipment, JNCIA-Junos is the essential foundation. It covers the Junos CLI, commit model, and routing architecture that underpins all Juniper platforms from SRX security to MX routers to EX switches. Most enterprise and service provider networks use Juniper alongside Cisco, making JNCIA-Junos a complement to CCNA.
How is Junos different from Cisco IOS?
Junos uses a hierarchical configuration model committed atomically, you make changes in a candidate configuration, review them, then commit. This differs from Cisco IOS where commands take effect immediately. Junos also uses a single consistent CLI across all hardware platforms (routers, switches, firewalls), whereas Cisco IOS variants differ by platform.
What is the JNCIA-Junos exam format?
65 multiple-choice questions in 90 minutes, with a passing score of 61% (approximately 40 correct). The exam tests conceptual knowledge rather than hands-on performance. Juniper provides a free Day One book library and open lab environments to assist preparation.
What certifications come after JNCIA-Junos?
JNCIS-ENT (Enterprise Routing and Switching Specialist) and JNCIS-SP (Service Provider Routing Specialist) are the most common next steps. JNCIS-SEC covers security with SRX firewalls. All JNCIS-level exams require JNCIA-Junos as a prerequisite.
What is the current JNCIA-Junos exam code?
The current exam code is JN0-106, updated March 2026 (previously JN0-105). Juniper does not publish a numeric passing score or a flat fee; pricing is delivered through Pearson VUE and varies by region.
C3RT is a native iOS and macOS exam preparation platform covering the Juniper JNCIA-Junos (JN0-106) (JNCIA-Junos), a IT Certifications certification, administered by Juniper Networks. C3RT is not affiliated with or endorsed by Juniper Networks. Certification names and trademarks are the property of their respective organisations. For official exam registration, eligibility requirements, and content outlines, visit the Juniper Networks official website ↗ .