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Juniper JNCIA -Junos Exam Questions and Answers | SPOTO

The Juniper JNCIA-Junos certification is a foundational credential for networking professionals, verifying their knowledge of Junos OS and essential networking concepts. It prepares candidates for roles requiring expertise in network configuration, routing protocols, and troubleshooting. To ensure success, SPOTO provides a comprehensive collection of JNCIA-Junos Exam Questions and Answers designed to match the format and difficulty of the actual exam. These expertly crafted resources help candidates understand core topics, identify knowledge gaps, and practice effectively. With SPOTO’s materials, you’ll gain the confidence and skills needed to pass the certification exam and advance your career. Whether you're a beginner or enhancing existing knowledge, the JNCIA-Junos questions and answers from SPOTO are an invaluable resource for achieving your certification goals.
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Question #1
Which two statements are correct about the request system zeroize local command? (Choose two.)
A. The command preserves the management interface addresses
B. The command resets all key values
C. The command removes all data files
D. The command removes all user-created files from the system
View answer
Correct Answer: BD

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Question #2
In the show | compare rollback 49 command, what is the purpose of the | ?
A. he | is used to represent an "either or" statement
B. he | is a shortcut to redirect output from a command line to a file
C. he | filters the output of the show command T
D. he | changes the command from an operational command to a configuration mode command
View answer
Correct Answer: C
Question #3
You are in configuration mode at the top of the hierarchy. You need to abort the changes that you have made and start again with a fresh copy of the active configuration. Which command should you use to accomplish this task?
A. rollback 0
B. load active
C. reset config
D. clear candidate config
View answer
Correct Answer: A
Question #4
Which Junos OS routing instance type is used for non-VPN-related applications such as system virtualization?
A. vpls
B. forwarding
C. virtual-router
D. vrf
View answer
Correct Answer: C
Question #5
When you first log in to a router, how does the router indicate that factory defaults are being used? Junos Configuration Basics
A. The router's host name is Amnesiac
B. The password you used to log in is junos
C. The router immediately enters configuration mode after you log in
D. The router allows you to enter configuration mode without logging in
View answer
Correct Answer: A
Question #6
You have enabled trace options to log error messages. You want to have the messages displayed to your terminal session automatically as they occur. Which command should you use in this scenario?
A. request message terminal
B. file show
C. file list
D. monitor start
View answer
Correct Answer: D
Question #7
Which two statements about the Junos OS are true? (Choose two.)
A. It uses a different software source code base for each platform
B. It supports Java for automation on all platforms
C. It supports XML for automation on all platforms
D. It uses the same software source code base for all platforms
View answer
Correct Answer: CD
Question #8
Exhibit: Which type of route does the configuration create?
A. an indirect next hop
B. a generated route
C. a non-advertised route
D. a default gateway
View answer
Correct Answer: D
Question #9
You are performing the initial configuration of an SRX Series device. What must you set before the device will allow you to commit your configuration?
A. management interface
B. system time
C. hostname
D. root authentication
View answer
Correct Answer: D
Question #10
Which two statements are correct about the inet.0 routing table? (choose two.)
A. It is used for populating the Ethernet switching table
B. It stores information learned from routing protocols and other sources
C. It is used for populating the forwarding table
D. It is used for populating the forwarding policy
View answer
Correct Answer: BC
Question #11
Which command verifies configuration syntax without applying the changes?
A. commit and -quit
B. commit check
C. commit comment
D. commit confirmed
View answer
Correct Answer: B
Question #12
What are two protocols that the Junos OS uses to archive configuration files remotely? (Choose two.)
A. SCP
B. HTTP
C. SFTP
D. FTP
View answer
Correct Answer: AD
Question #13
Which two types of traffic are processed by the Routing Engine (RE)?
A. IP packet with the IP Options field
B. time-to-live (TTL) expired messages
C. ICMP destination unreachable messages
D. OSPF update messages
View answer
Correct Answer: BC
Question #14
What information is provided by the help topic interface command?
A. It displays the administration manual for the interface command
B. It displays usage examples for the top-ten interface commands
C. It displays the available options and a brief description of usage guidelines
D. It displays the best options to use with the interface command regarding your current configuration
View answer
Correct Answer: C
Question #15
What are two benefits of a modular operating system? (Choose two.)
A. A malfunction in one module causes a full system shutdown
B. Each module runs in its own protected memory space
C. It enables the independent restart of each module as necessary
D. It enables CPU scheduling strictly using kernel system calls
View answer
Correct Answer: BC
Question #16
At which hierarchy would you configure a static MAC address for interface ge-0/0/0?
A. [edit interfaces ge-0/0/0 unit 0]
B. [edit interfaces ge-0/0/0]
C. [edit interfaces ge-0/0/0 unit 0 family inet]
D. [edit interfaces ge-0/0/0 unit 0 family inet address 172
View answer
Correct Answer: D
Question #17
Which two statements describe the connection between control plane and the forwarding plane? Choose Two
A. No rate limiter is configured by default
B. A rate limiter is configured by default
C. Exception traffic is preferred over the control traffic during congestion
D. Control traffic is preferred over the exception traffic during congestion
View answer
Correct Answer: AD
Question #18
Your Junos OS routers use a static route to provide connectivity to the management network. You do not want this static route to be redistributed using a dynamic routing protocol. In this scenario, which static route configuration parameter will accomplish this task? A.
A. A
B. B
C. C
D. D
View answer
Correct Answer: C
Question #19
Exhibit: Which statement is correct when traffic is received from 10.10.10.4?
A. The traffic is counted and accepted
B. The traffic is counted and rejected
C. The traffic is only rejected
D. The traffic is only accepted
View answer
Correct Answer: B
Question #20
Which source of routing information is preferred by default?
A. static
B. RIP
C. direct
D. BGP
View answer
Correct Answer: A
Question #21
Which two operating systems are used as the foundation of the Junos OS? (Choose two.)
A. Ubuntu
B. CentOS
C. Linux
D. FreeBSD
View answer
Correct Answer: CD
Question #22
Referring to the exhibit, which dynamic routing protocol would be used for this topology?
A. IGMPv3
B. OSPFv2
C. RIPng
D. RIP
View answer
Correct Answer: C
Question #23
What is the purpose of the discard action of a firewall filter?
A. The system drops the packet and logs the entry
B. The system drops the packet and sends an ICMP message
C. The system silently drops the packet
D. The system evaluates the next term in the policy
View answer
Correct Answer: C
Question #24
What are two functions of the transport layer? (Choose two.)
A. data integrity
B. segmentation
C. flow control
D. packet forwarding
View answer
Correct Answer: BC
Question #25
What is the minimum system-defined user class required to issue clear commands?
A. read-only
B. super-user
C. operator
D. authorized
View answer
Correct Answer: C
Question #26
Referring to the exhibit, which statement is true?
A. The customer has set the version parameter to automatic
B. The customer has not enabled security for BFD
C. The customer's link will failover in nine seconds
D. The customer's link flappedd within the last hour
View answer
Correct Answer: D
Question #27
By default, which character indicates the UNIX shell prompt?
A. %
B. $
C. >
D. #
View answer
Correct Answer: A
Question #28
What configuration parameter on a Junos device modifies the default next-hop resolution behavior of a static route?
A. Resolve
B. No-readvertise
C. Passive
D. Preference
View answer
Correct Answer: A
Question #29
Which parameter of the monitor traffic command should be used with caution when considering storage space on a Junos device?
A. detail
B. write-file
C. layer2-headers
D. extensive
View answer
Correct Answer: B
Question #30
What are two configurable physical interface properties? (Choose two.)
A. MTU
B. address
C. protocol family
D. link mode
View answer
Correct Answer: AC
Question #31
Routing policies contain which two type of statements? (Choose two.)
A. and
B. from
C. default
D. then
View answer
Correct Answer: BD
Question #32
Which command will show files stored in the /var/home/tab directory?
A. lab@router> file list
B. lab@router> file show
C. lab@router> ls
D. [edit] lab@router# rollback ?
View answer
Correct Answer: A
Question #33
Referring to the exhibit, which command will cause this event message?
A. request system logout
B. request system commit
C. request system recover
D. request system halt
View answer
Correct Answer: D
Question #34
Which keystroke is used to auto-complete user-defined variables?
A. Spacebar
B. Home
C. Esc
D. Tab
View answer
Correct Answer: D
Question #35
Click the Exhibit button. ***Exhibit is Missing*** Referring to the exhibit, how many received packets are classified as exception traffic?
A. 20814681
B. 14442602
C. 12417
D. 27824
View answer
Correct Answer: B
Question #36
You enable unicast reverse path forwarding on the ge-0/0/1.0 interface A packet is received on the ge- 0/0/1.0 interface with a source address of 10.10.10.10. A route lookup determines that the next hop for the 10.10.10.10 address is the ge0/0/1.0 interface. In this scenario which action is performed?
A. The packet is logged
B. The packet is forwarded
C. The packet is rejected
D. The packet is discarded
View answer
Correct Answer: B
Question #37
You have received a request from the user, SecurityTeam, to notify their terminal connection only when someone commits a change to the configuration of a specific networking device. Which command would you input in this scenario?
A. set system syslog user SecurityTeam change-log alert
B. set system syslog user SecurityTeam change-log any
C. set system syslog user SecurityTeam interactive-commands any
D. set system syslog user SecurityTeam interactive-commands
View answer
Correct Answer: B
Question #38
The monitor traffic command provides access to which utility?
A. tcpdump
B. telnet
C. traceroute
D. netstat
View answer
Correct Answer: A
Question #39
Click the Exhibit button. Referring to the exhibit, what happens when you filter the output of a command using the no-more parameter?
A. The output is displayed in XML format
B. The output is displayed with no page breaks
C. The number of lines in the output are displayed
D. The last screen of information is displayed
View answer
Correct Answer: B
Question #40
Referring to the exhibit, you are unable to see any traffic coming on interface ge-0/0/0. What is causing this problem?
A. he ge-0/0/0 interface is administratively down
B. he ge-0/0/0 interface has flow control disabled
C. he ge-0/0/0 interface s physical link is down
D. he ge-0/0/0 interface has the link-mode set to half-duplex
View answer
Correct Answer: C
Question #41
In which directory the traceoption files stored by default?
A. /var/db/
B. /var/tmp/
C. /var/log/
D. /var/home/
View answer
Correct Answer: C
Question #42
How many IP addresses can be configured on a given interface?
A. one primary and one secondary
B. one
C. as many as you want
D. one primary and multiple secondary
View answer
Correct Answer: C

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