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Juniper JN0-331 exam : SEC,Specialist(JNCIS-SEC)

JN0-331 Exam Simulator
  • Exam Code: JN0-331
  • Exam Name: SEC,Specialist(JNCIS-SEC)
  • Updated: Sep 04, 2026
  • Q & A: 131 Questions and Answers
  • Juniper JN0-331 Q&A - in .pdf

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Juniper JN0-331 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Screens & DoS Protection10%- DoS and flood protection
- Screen options configuration
Topic 2: High Availability10%- Chassis clustering concepts
- HA configuration and synchronization
Topic 3: User Authentication5%- Access control methods
- Firewall user authentication
Topic 4: IPsec VPNs15%- VPN monitoring and troubleshooting
- IPsec concepts and IKE
- Site-to-site VPN configuration
Topic 5: Unified Threat Management10%- Antivirus, antispam, web filtering
- UTM features overview
Topic 6: Security Fundamentals & Zones15%- Security components overview
- Routing instances for security
- Security zones and interfaces
Topic 7: Security Policies20%- Policy logging and monitoring
- Address books and applications
- Policy structure and processing
Topic 8: Network Address Translation (NAT)15%- Destination NAT
- Source NAT
- Static NAT

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

Question 1

Click the Exhibit button.
[edit security policies]
user@host# show
from-zone trust to-zone untrust {
policy AllowHTTP{
match {
source-address HOSTA;
destination-address any;
application junos-ftp;
}
then {
permit;
}}
policy AllowHTTP2{
match {
source-address any;
destination-address HOSTA;
application junos-http;
}
then {
permit;
}}
policy AllowHTTP3{
match {
source-address any;
destination-address any;
application any;
}
then {
permit;
}}}
A flow of HTTP traffic needs to go from HOSTA to HOSTB. Assume that traffic will initiate from
HOSTA and that HOSTA is in zone trust and HOSTB is in zone untrust.
What will happen to the traffic given the configuration in the exhibit?

A. The traffic will be permitted by policy AllowHTTP3.
B. The traffic will be permitted by policy AllowHTTP.
C. The traffic will be permitted by policy AllowHTTP2.
D. The traffic will be dropped as no policy match will be found.


Question 2

You want to allow your device to establish OSPF adjacencies with a neighboring device connected to interface ge-0/0/3.0. Interface ge-0/0/3.0 is a member of the HR zone. Under which configuration hierarchy must you permit OSPF traffic?

A. [edit security zones protocol-zone HR host-inbound-traffic]
B. [edit security zones functional-zone management protocols]
C. [edit security zones security-zone HR host-inbound-traffic protocols]
D. [edit security policies from-zone HR to-zone HR]


Question 3

Click the Exhibit button.
[edit security policies]
user@hostl# 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 configuration shown in the exhibit, you decided to eliminate the junos-ftp application
from the match condition of the policy MyTraffic. What will happen to the existing FTP and BGP sessions?

A. The existing FTP sessions will continue and only the existing BGP sessions will be dropped.
B. The existing FTP and BGP sessions will be re-evaluated and all sessions will be dropped.
C. The existing FTP and BGP sessions will continue.
D. The existing FTP and BGP sessions will be re-evaluated and only FTP sessions will be dropped.


Question 4

Host A opens a Telnet connection to Host B.
Host A then opens another Telnet connection to Host B.
These connections are the only communication between Host A and Host B.
The security policy configuration permits both connections.
How many flows exist between Host A and Host B?

A. 4
B. 3
C. 2
D. 1


Question 5

Click the Exhibit button.
[edit security policies from-zone trust to-zone untrust]
user@host# show
policy tunnel-traffic {
match {
source-address local-net;
destination-address remote-net;
application any;
then {
permit;
}}
Which command is needed to change this policy to a tunnel policy for a policy-based VPN?

A. set policy tunnel-traffic then permit tunnel ipsec-vpn remote-vpn
B. set policy tunnel-traffic then permit tunnel remote-vpn
C. set policy tunnel-traffic then tunnel ipsec-vpn remote-vpn permit
D. set policy tunnel-traffic then tunnel remote-vpn


Solutions:

Question 1
Answer: A
Question 2
Answer: C
Question 3
Answer: D
Question 4
Answer: A
Question 5
Answer: A

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