Juniper SEC,Specialist(JNCIS-SEC) : JN0-331 Exam Questions

  • Exam Code: JN0-331
  • Exam Name: SEC,Specialist(JNCIS-SEC)
  • Updated: Jul 20, 2026
  • Q&As: 131 Questions and Answers

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Juniper JN0-331 Exam Syllabus Topics:

SectionObjectives
Topic 1: Troubleshooting and Operations- Security troubleshooting
  • 1. VPN connectivity diagnostics
    • 2. Policy evaluation issues
      Topic 2: Security Fundamentals- Network security concepts
      • 1. Threat types and attack vectors
        • 2. Security zones and policies basics
          Topic 3: VPN Technologies- IPsec VPN
          • 1. VPN troubleshooting basics
            • 2. IKE phases and negotiation
              - VPN implementation
              • 1. Site-to-site VPN concepts
                • 2. Policy-based vs route-based VPNs
                  Topic 4: Security Policies and Firewall Filters- Policy configuration
                  • 1. Policy ordering and evaluation
                    • 2. Match criteria and actions
                      - Firewall filters
                      • 1. Filter terms and rules
                        • 2. Apply filters to interfaces
                          Topic 5: NAT (Network Address Translation)- NAT types and use cases
                          • 1. Static NAT
                            • 2. Source NAT
                              • 3. Destination NAT
                                Topic 6: Security Services and Features- Advanced security features
                                • 1. Screening and DoS protection basics
                                  • 2. Logging and monitoring

                                    Juniper SEC,Specialist(JNCIS-SEC) Sample Questions:

                                    1. What is a redundancy group in JUNOS Software?

                                    A) a set of chassis clusters that fail over as a group
                                    B) a set of VRRP neighbors that fail over as a group
                                    C) a set of devices that participate in a chassis cluster
                                    D) a set of chassis cluster objects that fail over as a group


                                    2. Which zone is a system-defined zone?

                                    A) management zone
                                    B) trust zone
                                    C) null zone
                                    D) untrust zone


                                    3. Which two commands can be used to monitor firewall user authentication? (Choose two.)

                                    A) show security audit log
                                    B) show security firewall-authentication history
                                    C) show security firewall-authentication users
                                    D) show access firewall-authentication


                                    4. You are not able to telnet to the interface IP address of your device from a PC on the same
                                    subnet.
                                    What is causing the problem?

                                    A) Telnet is not being permitted by self policy.
                                    B) Telnet is not being permitted by security policy.
                                    C) Telnet is not enabled as a host-inbound service on the zone.
                                    D) Telnet is not allowed because it is not considered secure.


                                    5. Which two statements are true regarding proxy ARP? (Choose two.)

                                    A) Proxy ARP is not enabled by default.
                                    B) Proxy ARP is enabled by default.
                                    C) JUNOS security devices can forward ARP requests to a remote device when proxy ARP is enabled.
                                    D) JUNOS security devices can reply to ARP requests intended for a remote device when proxy ARP is enabled.


                                    Solutions:

                                    Question # 1
                                    Answer: D
                                    Question # 2
                                    Answer: C
                                    Question # 3
                                    Answer: B,C
                                    Question # 4
                                    Answer: C
                                    Question # 5
                                    Answer: A,D

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