Junos, Associate (JNCIA-Junos) practice questions

1. Question 1 of 25

   Select 2

   Which two statements are correct regarding Layer 2 network switches? (Choose two.)

   • ASwitches flood broadcast traffic.
   • BSwitches are susceptible to traffic loops.
   • CSwitches do not learn MAC addresses.
   • DSwitches create a single collision domain.

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   Correct answer: A, B

   How others answered

   • AB100%

2. Question 2 of 25

   Select 2

   What are two attributes of the UDP protocol? (Choose two.)

   • AUDP is best effort.
   • BUDP is always slower than TCP.
   • CUDP is connectionless.
   • DUDP is more reliable than TCP.

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   Correct answer: A, C

   How others answered

   • AC100%

3. Question 3 of 25

   

   Click the Exhibit button. You are unable to remotely access your Juniper device using the CLI. Referring to the exhibit, which command would you add to the existing configuration to enable remote CLI access?

   • Aset system services ssh
   • Bload factory-default
   • Cset system login idle-timeout 20
   • Dset system root-authentication plain-text-password

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   Correct answer: A

   How others answered

   • A100%

4. Question 4 of 25

   You are trying to diagnose packet loss at interface ge-0/0/3. In this scenario, which command would help you view error statistics in real time?

   • Amonitor interface ge-0/0/3
   • Bshow interface ge-0/0/3
   • Cshow interface terse
   • Dmonitor interface traffic

   Show answer

   Correct answer: A

   How others answered

   • A100%

5. Question 5 of 25

   Which prompt indicates that you are using configuration mode?

   • A>
   • B$
   • C#
   • D%

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   Correct answer: C

   How others answered

   • C100%

6. Question 6 of 25

   Select 2

   Which two statements are correct about a Routing Engine? (Choose two.)

   • AIt processes CoS marked traffic.
   • BIt processes management traffic.
   • CIt maintains routing tables.
   • DIt forwards transit traffic.

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   Correct answer: B, C

   How others answered

   • BC100%

7. Question 7 of 25

   Select 2

   What are two methods for navigating to configuration mode from an operational mode prompt? (Choose two.)

   • AUse the quit command.
   • BUse the configure command.
   • CUse the exit command.
   • DUse the edit command.

   Show answer

   Correct answer: B, D

   How others answered

   • BD80%
   • B20%

8. Question 8 of 25

   Which statement is correct concerning exception traffic processing?

   • AException traffic is discarded by the PFE.
   • BException traffic is rate-limited to protect the RE.
   • CException traffic is always dropped during congestion.
   • DException traffic is never forwarded.

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   Correct answer: B

   How others answered

   • B100%

9. Question 9 of 25

   In the Junos OS, which keyboard shortcut allows you to move to the start of the line?

   • ACtrl+e
   • BCtrl+a
   • CCtrl+k
   • DCtrl+w

   Show answer

   Correct answer: B

   How others answered

   • B75%
   • A25%

10. Question 10 of 25

    Select 2

    Which two statements apply to the Routing Engine functions? (Choose two.)

    • AIt does not process routing updates.
    • BIt responds to ping and traceroute commands.
    • CIt maintains the routing tables.
    • DIt processes the transit traffic.

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    Correct answer: B, C

    How others answered

    • BC100%

11. Question 11 of 25

    Select 2

    An administrator configures a router's interface with an IPv4 address and subnet mask. The administrator also confirms that this interface is in an up state. In this scenario, which two route types are created on the local router? (Choose two.)

    • Aa local route
    • Ba dynamic route
    • Ca static route
    • Da direct route

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    Correct answer: A, D

    How others answered

    • AD100%

12. Question 12 of 25

    Select 2

    Which two statements describe the result when you enter ? at the command-line prompt? (Choose two.)

    • AIt displays help about a text string contained in a statement.
    • BIt lists the available commands and options.
    • CIt displays summary information about the commands and options.
    • DIt lists tips for the help menu.

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    Correct answer: B, C

    How others answered

    • BC73%
    • AB27%

    Only 73% agreed on this answer — treat it as contested rather than settled.

13. Question 13 of 25

    What is the primary system log file that is present in the default configuration of a Junos device?

    • Avrrp
    • Bkmd
    • Cmessages
    • Djsrpd

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    Correct answer: C

    How others answered

    • C100%

14. Question 14 of 25

    Which protocol is responsible for learning an IPv4 neighbor's MAC address?

    • ANeighbor Discovery Protocol (NDP)
    • BAddress Resolution Protocol (ARP)
    • CMedia Access Control Security (MACsec)
    • DNetwork Address Translation (NAT)

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    Correct answer: B

    How others answered

    • B100%

15. Question 15 of 25

    Select 2

    Which two statements are correct about firewall filters? (Choose two.)

    • A"Discard" is the default action of packets that are not explicitly allowed.
    • BThere can be only one firewall filter.
    • CThere can be multiple firewall filters.
    • D"Accept" is the default action of packets that are not explicitly allowed.

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    Correct answer: A, C

    How others answered

    • AC100%

16. Question 16 of 25

    Which Junos OS component is responsible for maintaining the forwarding table?

    • APacket Forwarding Engine
    • Bchassis control daemon
    • CRouting Engine
    • Dmanagement daemon

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    Correct answer: A

    How others answered

    • A55%
    • C45%

    Only 55% agreed on this answer — treat it as contested rather than settled.

17. Question 17 of 25

    Select 3

    What information does the forwarding table require so that the device forwards traffic? (Choose three.)

    • ABGP local preference value
    • Bnext hop IP address
    • Coutgoing interface name
    • DOSPF metric value
    • Enext hop MAC address

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    Correct answer: B, C, E

    How others answered

    • BCE100%

18. Question 18 of 25

    Which layer of the OSI model contains the IP address information?

    • ALayer 2
    • BLayer 4
    • CLayer 1
    • DLayer 3

    Show answer

    Correct answer: D

    How others answered

    • C100%

    Most people chose C, not D. Verify this one against the vendor documentation.

19. Question 19 of 25

    Select 2

    Which two statements about route preference in Junos are correct? (Choose two.)

    • ABoth direct and static routes have the same preference.
    • BBoth direct and local routes have the same preference.
    • CBoth OSPF internal and OSPF AS external routes have the same preference.
    • DBoth EBGP and IBGP routes have the same preference.

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    Correct answer: B, D

    How others answered

    • BD100%

20. Question 20 of 25

    Select 2

    What are two link-state routing protocols? (Choose two.)

    • ARIP
    • BIS-IS
    • CBGP
    • DOSPF

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    Correct answer: B, D

    How others answered

    • BD100%

21. Question 21 of 25

    Select 2

    Which two statements are correct about the employee@R1> prompt? (Choose two.)

    • AYou are at a shell prompt.
    • BYou are in configuration mode.
    • CR1 is the hostname of your device.
    • DYou are in operational mode.

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    Correct answer: C, D

    How others answered

    • CD100%

22. Question 22 of 25

    

    Click the Exhibit button. How is traffic, sourced from 10.0.0.0/8, treated by the firewall filter shown in the exhibit?

    • Alogged with no further action
    • Blogged and accepted
    • Clogged and rejected
    • Dlogged and discarded

    Show answer

    Correct answer: C

    How others answered

    • C100%

23. Question 23 of 25

    What does the user@router> clear log ospf-trace command accomplish?

    • ALogging data into ospf-trace is stopped.
    • BTrace parameters are removed from the OSPF protocol configuration.
    • CData in the ospf-trace file is removed and logging continues.
    • DThe ospf-trace file is deleted.

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    Correct answer: C

    How others answered

    • C100%

24. Question 24 of 25

    Which character is used to filter the command output in the Junos CLI?

    • A?
    • B<
    • C|
    • D>

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    Correct answer: C

    How others answered

    • C100%

25. Question 25 of 25

    Which service does RADIUS provide?

    • Arouting
    • Bauthentication
    • CDNS resolution
    • Dtime synchronization

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    Correct answer: B

    How others answered

    • B100%

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JN0-105 practice, question 1 of 25