Free JN0-335: Security, Specialist (JNCIS-SEC) Exam Questions and Answers
Security, Specialist (JNCIS-SEC) is exam JN0-335, 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.
The first 10 questions on this page are free to read, answers included — no account and no card. A plan opens the rest of the bank, the full timed practice test and your weak-topic reporting.
Last updated: September 12, 2026
- Exam code
- JN0-335
- 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%
Recommended: Switch to Test Mode to start a practice test that simulates the real exam experience.
Question #1
A company's firewall is blocking legitimate traffic from a trusted IP. What should the admin check first?
Please select an optionIncorrectCorrect answer: D
The admin should check firewall rules to ensure that traffic from the trusted IP is not inadvertently blocked by ACLs.
Was this answer correct?Question #2
A security manager identifies anomalous traffic patterns. What action should they take first?
Please select an optionIncorrectCorrect answer: A
Analyzing logs allows the manager to gather evidence and understand the nature of the anomalous traffic before taking any actions.
Was this answer correct?Question #3
An organization is implementing a new VPN. What is a key consideration for traffic encryption?
Please select an optionIncorrectCorrect answer: B
Selecting a robust encryption protocol (e.g., IPsec, SSL) is crucial for securing data transmitted over the VPN.
Was this answer correct?Question #4
A network security team needs to prevent unauthorized access to sensitive data. What should they implement?
Please select an optionIncorrectCorrect answer: A
Role-Based Access Control (RBAC) restricts access to sensitive data based on user roles, minimizing unauthorized access risks.
Was this answer correct?Question #5
During a security audit, which aspect should receive the greatest attention?
Please select an optionIncorrectCorrect answer: C
Ensuring compliance with security regulations is critical during a security audit, as violations could lead to legal ramifications and penalties.
Was this answer correct?Question #6
A company experiences a DDoS attack. What is the best immediate response?
Please select an optionIncorrectCorrect answer: A
Rate limiting helps to mitigate DDoS attacks by controlling the amount of traffic sent to the server, thus maintaining service availability.
Was this answer correct?Question #7
What is the primary purpose of a Security Information and Event Management (SIEM) system?
Please select an optionIncorrectCorrect answer: A
A SIEM system collects and analyzes security event data from various sources to identify potential security threats.
Was this answer correct?Question #8
A network engineer must choose a firewall type for an internal network. Which is generally the best option?
Please select an optionIncorrectCorrect answer: B
Next-generation firewalls provide advanced filtering capabilities, including application awareness and intrusion prevention, making them ideal for internal networks.
Was this answer correct?Question #9
A company has implemented network segmentation. What is the main benefit?
Please select an optionIncorrectCorrect answer: A
Network segmentation improves security by isolating different network segments, limiting the lateral movement of threats within the network.
Was this answer correct?Question #10
What is an important aspect of secure password policies?
Please select an optionIncorrectCorrect answer: B
Regularly expiring passwords helps to mitigate the risk of unauthorized access by ensuring that compromised passwords are regularly changed.
Was this answer correct?
Continue with JN0-335: Security, Specialist (JNCIS-SEC)
Unlock the full question bank
You have read the first 10 questions. A subscription opens every question in JN0-335: Security, Specialist (JNCIS-SEC), the full timed practice test, and your progress and weak-topic reporting.
Single exam
$19.99for 30 days
Full question bank and practice test for one exam, for 30 days.
ChooseSingle exam
$49.99for 1 year
One exam for a full year. Nothing renews and nothing to cancel.
ChooseFull access
$39.99/mo
Every exam in the catalogue, month to month.
ChooseFull access
$199.99/yr
Every exam in the catalogue for a year.
Choose
Already subscribed? Sign in to pick up where you left off.
Other Juniper certifications
- 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)
- JN0-360: Juniper Networks Certified Internet Specialist SP (JNCIS-SP) (opens in a new tab)
- JN0-104: Junos, Associate (JNCIA-Junos) (opens in a new tab)
- JN0-230: Security, Associate (JNCIA-SEC) (opens in a new tab)
Reviews
★★★★★
This platform is a lifesaver. The practice questions and explanations are so detailed. It’s the best study tool I’ve ever used.
Hannah Smith
USA
★★★★★
I highly recommend Exam Practice. The feedback after each test helped me improve significantly, and I passed my exams easily.
Oscar Nyström
Sweden
★★★★★
Exam Practice is worth every penny. The mock exams are realistic, and the feedback helped me focus on key areas.
Amit Sharma
India
FAQ
Learn More: https://www.juniper.net/us/en/training/certification.html
- Q1: What is the JN0-335: Security, Specialist (JNCIS-SEC) exam?
- A: JN0-335: Security, Specialist (JNCIS-SEC) is a Juniper certification exam. Judging by the questions in our bank, it concentrates on firewall, cybersecurity, attack and protect.
- Q2: What topics does the JN0-335: Security, Specialist (JNCIS-SEC) exam cover?
- A: Questions in our JN0-335: Security, Specialist (JNCIS-SEC) bank cluster around firewall, cybersecurity, attack and protect. Working through the full set is the quickest way to find which of these you are weakest on.
- Q3: How should I prepare for JN0-335: Security, Specialist (JNCIS-SEC)?
- A: Work through the JN0-335: Security, Specialist (JNCIS-SEC) 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 JN0-335: Security, Specialist (JNCIS-SEC) exam questions?
- A: They are drawn from officially released past questions and from community members who have sat JN0-335: Security, Specialist (JNCIS-SEC). Answers are verified and updated weekly.
- Q5: Where do I register for the JN0-335: Security, Specialist (JNCIS-SEC) 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 JN0-335: Security, Specialist (JNCIS-SEC) sample?
- A: Yes. Every JN0-335: Security, Specialist (JNCIS-SEC) 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.