想在 2026 年通過 JN0-331 並不容易：Juniper SEC,Specialist(JNCIS-SEC) 出題範圍廣、觀念靈活，是不少考生眼中最難啃的一關。Fast2test 整理的模擬試題共 131 道，讓你在上考場前先熟悉出題邏輯，不再被陌生題型打亂節奏。

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最新的 JNCIS JN0-331 免費考試真題：

問題 #1

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

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

問題 #2

What are three benefits of using chassis clustering? (Choose three.)

A. Synchronizes configuration files and session state.
B. Increases security capabilities for IPsec sessions.
C. Provides active-passive control and data plane redundancy.
D. Enables automated fast-reroute capabilities.
E. Provides stateful session failover for sessions.

問題 #3

Which two statements are true regarding firewall user authentication? (Choose two.)

A. When configured for Web firewall user authentication only, the user must first open a connection to the JUNOS security platform before connecting to a remote network resource.
B. When configured for pass-through firewall user authentication, the user must first open a connection to the JUNOS security platform before connecting to a remote network resource.
C. If a JUNOS security device is configured for Web firewall user authentication, new sessions are automatically intercepted to perform authentication.
D. If a JUNOS security device is configured for pass-through firewall user authentication, new sessions are automatically intercepted to perform authentication.

問題 #4

You are required to configure a SCREEN option that enables IP source route option
detection.
Which two configurations meet this requirement? (Choose two.)

A. [edit security screen]
user@host# show
ids-option protectFromFlood {
ip {
record-route-option;
security-option;
}}
B. [edit security screen]
user@host# show
ids-option protectFromFlood {
ip {
source-route-option;
}}
C. [edit security screen]
user@host# show
ids-option protectFromFlood {
ip {
loose-source-route-option;
strict-source-route-option;
}}
D. [edit security screen]
user@host# show
ids-option protectFromFlood {
ip {
strict-source-route-option;
record-route-option;
}}

問題 #5

A policy-based IPsec VPN is ideal for which scenario?

A. when a dynamic routing protocol such as OSPF must be sent across the VPN
B. when the remote peer is a dialup or remote access client
C. when you want to conserve tunnel resources
D. when you want to configure a tunnel policy with an action of deny

問題與答案：