Free JN0-105: Junos, Associate (JNCIA-Junos) Exam Questions and Answers
Junos, Associate (JNCIA-Junos) is exam JN0-105, part of the Juniper Networks Certification Program. Juniper's written exams share one format across every track and level: 65 multiple-choice questions in 90 minutes, delivered by Pearson VUE. The JN0- code carries the track in its second digit — 3 is security, 4 enterprise routing and switching, 5 Mist AI, 6 service provider, 8 data centre — and the level in the first, running Associate, Specialist, Professional and Expert.
Candidates comparing JN0-105 exam dumps, ExamTopics and other JN0-105 practice tests use this page for the answers and explanations behind each question. Download the free JN0-105 PDF, then sit the timed JN0-105 exam simulation before booking with Juniper.
Last updated: October 6, 2026
- Exam code
- JN0-105
- Provider
- Juniper
- Questions in our bank
- 1000+
- Free to read
- First 10, with answers
- Official page
- Official Exam website
- Our test mode duration & pass mark
- 130 mins · 70%
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Question #1
You received a new Junos device and are configuring the system-related settings. You must configure this device for the current date and time on the US West coast. You have set the time zone to America/Los_Angeles, however the time and date did not change. In this scenario, which two additional actions would satisfy this requirement? (Choose two.)
Select 2 answers.
Correct answer: A, B
Explanation
When configuring the system-related settings for the current date and time on a Junos device, especially for a specific time zone like America/Los_Angeles, and the time does not automatically adjust, two effective actions can be taken. Firstly, setting the date and time manually allows for immediate correction of the system clock. This can be done via the CLI with the appropriate set date and time command. Secondly, configuring the device to use an NTP server can provide ongoing synchronization with an accurate time source, ensuring that the device maintains the correct time and date automatically in the future, even in the case of restarts or minor drifts in the internal clock.
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Question #2
Which statement is correct when multiple users are configuring a Junos device using the configure private command?
Correct answer: C
Explanation
When multiple users are configuring a Junos device using the "configure private" command, each user gets their own candidate configuration (C). This allows for isolated configuration sessions, where changes made by one user do not impact or interfere with the changes made by another user in their private session.
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Question #3
What information does the forwarding table require so that the device forwards traffic? (Choose three.)
Select 3 answers.
Correct answer: B, D, E
Explanation
The forwarding table in a network device requires specific information to efficiently forward traffic toward its destination. This includes the next hop IP address, which indicates the next router or device in the path to the destination. The outgoing interface name identifies the physical or logical interface through which the packet should be sent to reach the next hop. Lastly, the next hop MAC address is crucial for Layer 2 forwarding decisions, allowing the device to encapsulate the IP packet in a frame that can be understood by Ethernet or other Layer 2 protocols. OSPF metric values and BGP local preference values are used in the routing decision process to select the best path and populate the forwarding table but are not directly used by the forwarding table to forward traffic.
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Question #4
When considering routing policies, which two statements are correct? (Choose two.)
Select 2 answers.
Correct answer: B, C
Explanation
Routing policies in Junos OS are crucial for controlling route advertisements and path selection. The correct answers are B and C. An import routing policy for BGP determines which received prefix advertisements are placed in the routing information base (RIB), and policy terms are evaluated from top to bottom, with action taken on the first match found. This sequential evaluation allows for precise control over routing decisions.
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Question #5
What are two attributes of the UDP protocol? (Choose two.)
Select 2 answers.
Correct answer: C, D
Explanation
UDP (User Datagram Protocol) is known for being connectionless (D) and providing best-effort delivery without the reliability mechanisms present in TCP (C). This means that UDP does not establish a connection before sending data and does not guarantee delivery, order, or error checking, making it faster but less reliable than TCP.
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Question #6
Which two statements about route preference in Junos are correct? (Choose two.)
Select 2 answers.
Correct answer: B, D
Explanation
Direct and local routes share preference 0, and both EBGP and IBGP routes have preference 170. OSPF internal routes have preference 10 while OSPF AS external routes have 150, and static routes have 5.
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Question #7
How many rescue configuration files are supported on a Junos device?
Correct answer: C
Explanation
Junos OS supports only 1 rescue configuration file on a device. This rescue configuration is a safeguard feature that allows network administrators to revert to a known good configuration in case of a configuration error or issue, ensuring network stability. In Junos OS, each device supports only one rescue configuration file. The rescue configuration is a specific configuration that can be saved and later retrieved if needed. This is used as a fallback configuration that you know works and can be applied in case of an emergency or if the current configuration has issues. Reference: Juniper Networks Documentation on Rescue Configuration "You can create a rescue configuration file by using the request system configuration rescue save operational mode command. Each Junos OS device can have only one rescue configuration file."
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Question #8
Which protocol is responsible for learning an IPv4 neighbor's MAC address?
Correct answer: A
Explanation
The Address Resolution Protocol (ARP) is responsible for mapping an IPv4 address to a machine's MAC address. ARP operates at Layer 2 of the OSI model and is used to find the MAC address of a host given its IPv4 address. When a device wants to communicate with another device on the same local network, it uses ARP to discover the recipient's MAC address. References: • Juniper official documentation: ARP. • Networking standards: RFC 826.
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Question #9
After the factory default configuration is loaded, which configuration object must be created prior to the first commit?
Correct answer: A
Explanation
In Juniper Networks devices, when the factory default configuration is loaded, the first step before committing any configuration is to set up root authentication. This is crucial because it secures the device by ensuring that only authorized users have administrative access. Without setting up a root password, the device will not allow any commit operations, which is a safety measure to prevent unauthorized access. This requirement emphasizes the importance Juniper places on security right from the initial setup of the device.
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Question #10
Which two statements are correct about Junos traceoptions? (Choose two.)
Select 2 answers.
Correct answer: B, D
Explanation
Traceoptions in Junos OS are used for detailed debugging and troubleshooting of protocols and processes within the system. They are not enabled by default due to the potential performance impact and volume of data generated. Instead, traceoptions are enabled through specific configuration settings under the relevant protocol or process hierarchy. This allows administrators to target their troubleshooting efforts and control the scope of logging. By default, the output generated by traceoptions is stored in files located in the /var/log directory, with the file name typically specified in the traceoptions configuration. This structured approach to logging and debugging helps in diagnosing complex issues without overwhelming the system or the administrator with irrelevant data.
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Discussion
Explain your reasoning, not just the letterOther Juniper certifications
- JN0-104: Junos, Associate (JNCIA-Junos) (opens in a new tab)
- JN0-363: Service Provider Routing and Switching, Specialist (JNCIS-SP) (opens in a new tab)
- JN0-230: Security, Associate (JNCIA-SEC) (opens in a new tab)
- JN0-351: Enterprise Routing and Switching, Specialist (JNCIS-ENT) (opens in a new tab)
- JN0-231: Security, Associate (JNCIA-SEC) (opens in a new tab)
- JN0-347: Enterprise Routing and Switching, Specialist (JNCIS-ENT) (opens in a new tab)
- JN0-634: Security Professional (JNCIP-SEC) (opens in a new tab)
- JN0-1101: Juniper Networks Certified Design Associate (JNCDA) (opens in a new tab)
- JN0-349: Enterprise Routing and Switching, Specialist (JNCIS-ENT) (opens in a new tab)
- JN0-360: Juniper Networks Certified Internet Specialist SP (JNCIS-SP) (opens in a new tab)
- JN0-664: Service Provider Routing and Switching, Professional (JNCIP-SP) (opens in a new tab)
- JN0-682: Data Center, Professional (JNCIP-DC) (opens in a new tab)
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FAQ
Learn More: https://www.juniper.net/us/en/training/certification.html
- Q1: What is the JN0-105: Junos, Associate (JNCIA-Junos) exam?
- A: JN0-105: Junos, Associate (JNCIA-Junos) is a Juniper certification exam. Judging by the questions in our bank, it concentrates on junos, router#, referring, ge-0 and routing.
- Q2: What topics does the JN0-105: Junos, Associate (JNCIA-Junos) exam cover?
- A: Questions in our JN0-105: Junos, Associate (JNCIA-Junos) bank cluster around junos, router#, referring, ge-0, routing, router, commit and route. Working through the full set is the quickest way to find which of these you are weakest on.
- Q3: How should I prepare for JN0-105: Junos, Associate (JNCIA-Junos)?
- A: Work through the JN0-105: Junos, Associate (JNCIA-Junos) practice questions here, checking your answer on each one, then sit the practice test to rehearse the exam under timed conditions before the real thing.
- Q4: Are these real JN0-105: Junos, Associate (JNCIA-Junos) exam questions?
- A: They are drawn from officially released past questions and from community members who have sat JN0-105: Junos, Associate (JNCIA-Junos). Answers are verified and updated weekly.
- Q5: Where do I register for the JN0-105: Junos, Associate (JNCIA-Junos) exam?
- A: Register through Juniper directly at https://www.juniper.net/us/en/training/certification.html. Exampractice is not affiliated with Juniper and does not administer the exam.
- Q6: Is there a free JN0-105: Junos, Associate (JNCIA-Junos) sample?
- A: Yes. Every JN0-105: Junos, Associate (JNCIA-Junos) page shows a free sample of real questions. Upgrading opens the full bank and the practice test.
- Q7: What are Juniper Certification Exams?
- A: Juniper Certification Exams validate your expertise in using and managing Juniper Networks’ products and solutions, including routing, switching, security, and automation. These certifications demonstrate your proficiency in deploying, configuring, and troubleshooting Juniper technologies to optimize network performance and security.
- Q8: Why should I pursue Juniper Certification?
- A: Juniper Certification enhances your professional credibility, showcasing your skills and knowledge in networking and security. This can lead to better job opportunities, higher salaries, and career advancement in IT, networking, and cybersecurity roles.
- Q9: What are the benefits of Juniper Certification?
- A: Benefits include recognition as a certified Juniper professional, improved job performance, access to exclusive resources, continuing education opportunities, and staying current with the latest Juniper technologies and best practices.
- Q10: Who should take Juniper Certification Exams?
- A: Network engineers, system administrators, security professionals, and anyone involved in managing and implementing Juniper Networks’ solutions should consider these certifications to validate their expertise and advance their careers.
- Q11: What types of Juniper Certification Exams are available?
- A: Juniper offers various certification paths, including:
- Q12: How do I prepare for Juniper Certification Exams?
- A: Preparation can include official Juniper training courses, study guides, practice exams, online tutorials, and hands-on experience with Juniper products and solutions.
- Q13: Where can I take Juniper Certification Exams?
- A: Juniper Certification Exams can be taken at authorized Pearson VUE testing centers worldwide or online, providing flexibility to fit your schedule and location.
- Q14: How do Juniper Certifications impact my career?
- A: Juniper Certifications significantly boost your career by demonstrating your expertise to employers, making you a more competitive candidate for advanced roles and promotions in networking, security, and IT infrastructure.
- Q15: Are there any prerequisites for Juniper Certification Exams?
- A: Some exams may have prerequisites, such as foundational knowledge or prior experience with Juniper products. Check the specific requirements for each certification path on the Juniper Networks Certification Program (JNCP) website.
- Q16: How often do I need to recertify for Juniper Certifications?
- A: Juniper Certifications typically require recertification every three years to ensure that certified professionals stay updated with the latest networking technologies and industry practices.