Juniper JNCIA-Junos Associate Certification Practice Test
Build your confidence for Juniper JNCIA-Junos Associate Certification. Practice the concepts, understand the answers, and strengthen your knowledge one question at a time.
Try a sample questionExam overview and details
Juniper Networks associate certification covering Junos OS fundamentals, routing protocols, switching, firewall filters, and network configuration. Administered by Juniper Networks. Key domains include Configuration Basics, Junos OS Fundamentals, Networking Fundamentals and Operational Monitoring and Maintenance.
Sample Questions
Choose an answer and explore the explanation to see how practice works.
Which Junos protocol family must be enabled on the interface unit for the interface to be eligible to carry IPv6 traffic?
Which routing-instance type is used by Junos to support a CE-PE L3VPN with overlapping address space, providing a separate RIB per customer?
Which command shows BGP peer state and the number of accepted/advertised prefixes per neighbour?
Where in the Junos hierarchy is configuration `groups` (apply-groups, e.g. `re0`/`re1`) defined?
Which Junos high-availability feature lets an engineer upgrade Junos on a dual-RE chassis with NO disruption to data-plane forwarding and minimal control-plane disruption?
Career Opportunities & Salary
Exam insights and study advice
In the real world, the JNCIA-Junos provides the practical, hands-on knowledge required to interact with Juniper devices from day one. It moves beyond theoretical networking to teach the specific CLI syntax, operational modes, and configuration hierarchy used across the entire Juniper product portfolio. This certification matters because it establishes a common operational language and methodology, reducing configuration errors and improving troubleshooting efficiency. For organizations deploying Juniper infrastructure, it ensures staff possess validated competency in the core platform that underpins advanced services like SRX firewalls or MX Series routers.
Your Path Forward
What this exam covers
01Configuration Basics
Topics
- Identify the main elements for configuring Junos devices, including:
- Factory-default state
- Initial configuration
- User accounts
- Login classes
- User authentication methods
- Interface types and properties
- Configuration groups
- Additional initial configuration elements, such as Network Time Protocol (NTP), SNMP, system log
- Configuration archival
- Logging and tracing
- Rescue configuration
- Describe how to configure basic components of a Junos device
Learning objectives
- Identify the main elements for configuring Junos devices, including:
- Factory-default state
- Initial configuration
- User accounts
- Login classes
- User authentication methods
- Interface types and properties
- Configuration groups
- Additional initial configuration elements, such as Network Time Protocol (NTP), SNMP, system log
- Configuration archival
- Logging and tracing
- Rescue configuration
- Describe how to configure basic components of a Junos device
02Junos OS Fundamentals
Topics
- Identify the concepts, benefits, or functionality of the core elements of the Junos OS, including:
- Software architecture
- Control and forwarding planes
- Routing engine and packet-forwarding engine
- Transit traffic processing
- Exception traffic
Learning objectives
- Identify the concepts, benefits, or functionality of the core elements of the Junos OS, including:
- Software architecture
- Control and forwarding planes
- Routing engine and packet-forwarding engine
- Transit traffic processing
- Exception traffic
03Networking Fundamentals
Topics
- Identify the concepts and functionality of various fundamental elements of networking
- Collision domains and broadcast domains
- Function of routers and switches
- Ethernet networks
- Layer 2 addressing, including address resolution
- Layer 3 / IP addressing, including subnet masks
- IPv4 / IPv6
- Subnetting and supernetting
- Decimal to binary conversion
- Longest match routing
- CoS
- Connection-oriented vs. connectionless protocols
Learning objectives
- Identify the concepts and functionality of various fundamental elements of networking
- Collision domains and broadcast domains
- Function of routers and switches
- Ethernet networks
- Layer 2 addressing, including address resolution
- Layer 3 / IP addressing, including subnet masks
- IPv4 / IPv6
- Subnetting and supernetting
- Decimal to binary conversion
- Longest match routing
- CoS
- Connection-oriented vs. connectionless protocols
04Operational Monitoring and Maintenance
Topics
- Identify methods of monitoring or maintaining Junos devices, including:
- Show commands
- Monitor commands
- Interface statistics and errors
- Network tools, such as ping, traceroute, telnet, SSH, etc.
- Junos OS installation and upgrades
- Powering on and shutting down Junos devices
- Root password recovery
- Describe monitoring or maintenance procedures for a Junos device
Learning objectives
- Identify methods of monitoring or maintaining Junos devices, including:
- Show commands
- Monitor commands
- Interface statistics and errors
- Network tools, such as ping, traceroute, telnet, SSH, etc.
- Junos OS installation and upgrades
- Powering on and shutting down Junos devices
- Root password recovery
- Describe monitoring or maintenance procedures for a Junos device
05Routing Fundamentals
Topics
- Identify basic routing concepts or functionality for Junos devices, including:
- Traffic forwarding concepts
- Routing tables
- Routing vs. forwarding tables
- Route preference
- Routing instances
- Static routing
- Advantages of and use cases for dynamic routing protocols
- Describe how to configure or monitor basic routing elements for a Junos device
Learning objectives
- Identify basic routing concepts or functionality for Junos devices, including:
- Traffic forwarding concepts
- Routing tables
- Routing vs. forwarding tables
- Route preference
- Routing instances
- Static routing
- Advantages of and use cases for dynamic routing protocols
- Describe how to configure or monitor basic routing elements for a Junos device
06Routing Policy and Firewall Filters
Topics
- Identify the concepts or functionality of routing policy and firewall filters on Junos devices
- Default routing policies
- Import and export policies
- Routing policy flow
- Effect of policies on routes and routing tables
- Policy structure and terms
- Policy match criteria, match types, and actions
- Firewall filter concepts
- Filter structure and terms
- Filter match criteria and actions
- Effect of filters on packets
- Unicast reverse-path-forwarding (RPF)
- Describe how to configure or monitor routing policies and firewall filters on a Junos device
Learning objectives
- Identify the concepts or functionality of routing policy and firewall filters on Junos devices
- Default routing policies
- Import and export policies
- Routing policy flow
- Effect of policies on routes and routing tables
- Policy structure and terms
- Policy match criteria, match types, and actions
- Firewall filter concepts
- Filter structure and terms
- Filter match criteria and actions
- Effect of filters on packets
- Unicast reverse-path-forwarding (RPF)
- Describe how to configure or monitor routing policies and firewall filters on a Junos device
07User Interfaces
Topics
- Identify the concepts, operation, or functionality of the Junos user interface, including:
- CLI functionality
- CLI modes
- CLI navigation
- CLI Help
- Filtering output
- Active vs. candidate configuration
- Reverting to previous configurations
- Modifying, managing, and saving configuration files
- Viewing, comparing, and loading configuration files
- J-Web (core/common functionality only)
Learning objectives
- Identify the concepts, operation, or functionality of the Junos user interface, including:
- CLI functionality
- CLI modes
- CLI navigation
- CLI Help
- Filtering output
- Active vs. candidate configuration
- Reverting to previous configurations
- Modifying, managing, and saving configuration files
- Viewing, comparing, and loading configuration files
- J-Web (core/common functionality only)