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

  • 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
Security Fundamentals- Junos security architecture
  • 1. SRX platform overview
  • 2. Security processing flow
- Security concepts
  • 1. Network security principles
  • 2. Threats and mitigation techniques
Zones and Security Policies- Security policies
  • 1. Policy troubleshooting
  • 2. Policy creation and evaluation
- Security zones
  • 1. Zone configuration
  • 2. Host inbound traffic
Virtual Private Networks- IPsec VPN
  • 1. Site-to-site VPN configuration
  • 2. IKE and IPsec fundamentals
Application Security Features- Unified Threat Management
  • 1. UTM features
  • 2. Content filtering and antivirus
- User and application awareness
  • 1. Application identification
  • 2. AppSecure concepts
High Availability and Troubleshooting- Chassis cluster
  • 1. Failover operations
  • 2. Redundancy groups
- Monitoring and troubleshooting
  • 1. Operational commands
  • 2. Log analysis and diagnostics
Network Address Translation- Destination and Static NAT
  • 1. Destination NAT
  • 2. Static NAT
- Source NAT
  • 1. Static and dynamic source NAT
  • 2. Interface NAT

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

1. Which two statements are true regarding high-availability chassis clustering? (Choose two.)

A) A chassis cluster consists of two devices.
B) Devices participating in a chassis cluster must be the same models.
C) Devices participating in a chassis cluster can be different models.
D) A chassis cluster consists of two or more devices.


2. Regarding an IPsec security association (SA), which two statements are true? (Choose two.)

A) IPsec SA is established during phase 2 negotiations.
B) IKE SA is bidirectional.
C) IPsec SA is bidirectional.
D) IKE SA is established during phase 2 negotiations.


3. Click the Exhibit button.
[edit security policies]
user@host# show
from-zone Private to-zone External {
policy MyTraffic {
match {
source-address myHosts;
destination-address ExtServers;
application [ junos-ftp junos-bgp ];
}
then {
permit {
tunnel {
ipsec-vpn vpnTunnel;
}}}}}
policy-rematch;
In the exhibit, you decided to change myHosts addresses.
What will happen to the new sessions matching the policy and in-progress sessions that had
already matched the policy?

A) New sessions will be evaluated. In-progress sessions will be re-evaluated.
B) New sessions will be evaluated. All in-progress sessions will continue.
C) New sessions will be evaluated. All in-progress sessions will be dropped.
D) New sessions will halt until all in-progress sessions are re-evaluated. In-progress sessions will be re-evaluated and possibly dropped.


4. Which two statements about the use of SCREEN options are correct? (Choose two.)

A) SCREEN options are deployed at the ingress and egress sides of a packet flow.
B) Although SCREEN options are very useful, their use can result in more session creation.
C) SCREEN options offer protection against various attacks at the ingress zone of a packet flow.
D) SCREEN options examine traffic prior to policy processing, thereby resulting in fewer resouces used for malicious packet processing.


5. What are two interfaces created when enabling a chassis cluster? (Choose two.)

A) reth0
B) fab0
C) st0
D) fxp1


Solutions:

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

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