JUNIPER NETWORKS CERTIFIED ASSOCIATE (JNCIA
JUNOS) EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2027
|INSTANT DOWNLOAD PDF
1. What is the primary function of the Junos OS?
A. Manage and operate Juniper Networks devices
B. Create web applications
C. Encrypt email messages
D. Replace Ethernet cables
Answer: A. Manage and operate Juniper Networks devices
Rationale: Junos OS is the operating system used to control and
manage many Juniper networking devices.
2. Which component of Junos OS is responsible for routing
protocols and maintaining routing tables?
A. Packet Forwarding Engine
B. Routing Engine
C. Power supply
D. Interface module
Answer: B. Routing Engine
Rationale: The Routing Engine runs routing protocols,
maintains routing information, and manages the device.
3. Which Junos component forwards transit packets?
A. Routing Engine
,B. Packet Forwarding Engine
C. Configuration database
D. CLI
Answer: B. Packet Forwarding Engine
Rationale: The Packet Forwarding Engine performs high-speed
packet forwarding based on forwarding information.
4. Which command displays the current operational status of
a Junos device?
A. show interfaces
B. show version
C. show chassis hardware
D. show system uptime
Answer: D. show system uptime
Rationale: The command displays system uptime and basic
operational information.
5. Which command displays the Junos OS version?
A. show version
B. show route
C. show configuration
D. show users
Answer: A. show version
Rationale: show version displays Junos OS release and platform
information.
6. Which interface is commonly used for out-of-band
management?
,A. fxp0
B. ge-0/0/0
C. xe-0/0/0
D. lo0
Answer: A. fxp0
Rationale: On platforms that support it, fxp0 is commonly
associated with the dedicated management interface.
7. What is the default Junos command-line interface prompt
for the operational mode of a user named lab?
A. lab#
B. lab>
C. lab$
D. lab@
Answer: B. lab>
Rationale: The > prompt indicates operational mode, while #
generally indicates configuration mode.
8. Which command enters configuration mode from
operational mode?
A. configure
B. edit
C. set
D. commit
Answer: A. configure
Rationale: The configure command transitions the CLI from
operational mode into configuration mode.
, 9. What symbol generally identifies Junos configuration
mode?
A. >
B. #
C. $
D. %
Answer: B. #
Rationale: Junos displays a # prompt in configuration mode.
10. Which command activates candidate configuration
changes?
A. save
B. commit
C. activate
D. apply
Answer: B. commit
Rationale: Junos uses commit to validate and activate
candidate configuration changes.
11. What happens when a user enters configuration
commands but does not commit them?
A. They are immediately active
B. They are stored only in the candidate configuration
C. They are automatically deleted
D. They reboot the device
JUNOS) EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2027
|INSTANT DOWNLOAD PDF
1. What is the primary function of the Junos OS?
A. Manage and operate Juniper Networks devices
B. Create web applications
C. Encrypt email messages
D. Replace Ethernet cables
Answer: A. Manage and operate Juniper Networks devices
Rationale: Junos OS is the operating system used to control and
manage many Juniper networking devices.
2. Which component of Junos OS is responsible for routing
protocols and maintaining routing tables?
A. Packet Forwarding Engine
B. Routing Engine
C. Power supply
D. Interface module
Answer: B. Routing Engine
Rationale: The Routing Engine runs routing protocols,
maintains routing information, and manages the device.
3. Which Junos component forwards transit packets?
A. Routing Engine
,B. Packet Forwarding Engine
C. Configuration database
D. CLI
Answer: B. Packet Forwarding Engine
Rationale: The Packet Forwarding Engine performs high-speed
packet forwarding based on forwarding information.
4. Which command displays the current operational status of
a Junos device?
A. show interfaces
B. show version
C. show chassis hardware
D. show system uptime
Answer: D. show system uptime
Rationale: The command displays system uptime and basic
operational information.
5. Which command displays the Junos OS version?
A. show version
B. show route
C. show configuration
D. show users
Answer: A. show version
Rationale: show version displays Junos OS release and platform
information.
6. Which interface is commonly used for out-of-band
management?
,A. fxp0
B. ge-0/0/0
C. xe-0/0/0
D. lo0
Answer: A. fxp0
Rationale: On platforms that support it, fxp0 is commonly
associated with the dedicated management interface.
7. What is the default Junos command-line interface prompt
for the operational mode of a user named lab?
A. lab#
B. lab>
C. lab$
D. lab@
Answer: B. lab>
Rationale: The > prompt indicates operational mode, while #
generally indicates configuration mode.
8. Which command enters configuration mode from
operational mode?
A. configure
B. edit
C. set
D. commit
Answer: A. configure
Rationale: The configure command transitions the CLI from
operational mode into configuration mode.
, 9. What symbol generally identifies Junos configuration
mode?
A. >
B. #
C. $
D. %
Answer: B. #
Rationale: Junos displays a # prompt in configuration mode.
10. Which command activates candidate configuration
changes?
A. save
B. commit
C. activate
D. apply
Answer: B. commit
Rationale: Junos uses commit to validate and activate
candidate configuration changes.
11. What happens when a user enters configuration
commands but does not commit them?
A. They are immediately active
B. They are stored only in the candidate configuration
C. They are automatically deleted
D. They reboot the device
