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JN0-103 Mock Test Free

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  • JN0-103 Mock Test Free – 50 Realistic Questions to Prepare with Confidence.
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JN0-103 Mock Test Free – 50 Realistic Questions to Prepare with Confidence.

Getting ready for your JN0-103 certification exam? Start your preparation the smart way with our JN0-103 Mock Test Free – a carefully crafted set of 50 realistic, exam-style questions to help you practice effectively and boost your confidence.

Using a mock test free for JN0-103 exam is one of the best ways to:

  • Familiarize yourself with the actual exam format and question style
  • Identify areas where you need more review
  • Strengthen your time management and test-taking strategy

Below, you will find 50 free questions from our JN0-103 Mock Test Free resource. These questions are structured to reflect the real exam’s difficulty and content areas, helping you assess your readiness accurately.

Question 1

Image
Referring to the exhibit, what information is provided about the route to 192.168.47.0/24? (Choose two.)

A. There are two active routes to 192.168.47.0/24.

B. There is a single active route to 192.168.47.0/24.

C. There are two next hops available to 192.168.47.0/24.

D. There is a single next hop available to 192.168.47.0/24.

 


Suggested Answer: BC

 

Question 2

You are connected to your Junos device using an SSH connection to the fxp0 interface. No other interfaces are currently configured beyond their default settings.
You commit a configuration that makes the fxp0 interface unreachable from your management network.
In this scenario, how would you re-establish communication with the device?

A. Connect to the console of the device.

B. Establish an SSH connection to the loopback interface.

C. Power off and power on the device.

D. Unplug the network cable and plug it back in.

 


Suggested Answer: A

 

Question 3

A user attempts to log in to a Junos device, but the RADIUS server is unreachable.
 Image
Referring to the exhibit, what is the default action of a Junos device in this scenario?

A. The Junos device displays a RADIUS connection error

B. The Junos device uses the local authentication database

C. The Junos device retries every 30 seconds until the connection is restored

D. The Junos device prompts for a cached RADIUS password

 


Suggested Answer: B

Reference:
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/junos-os-authentication-order.html

Question 4

You configured the route filter shown in the exhibit.
 Image
In this scenario, which IP addresses would term-One accept?

A. IP addresses that are part of the 172.35.0.0/16 network only.

B. IP addresses that are part of the 172.35.0.0/16 network and IP addresses that are in the 172.35.0.0/16 and 172.36.0.0/16 subnets.

C. IP addresses that are in a subnet of 172.35.0.0/16 network, but not IP addresses that are part of the 172.35.0.0/16 network itself.

D. IP addresses that are part of the 172.35.0.0/16 network and IP addresses that are in subnets of 172.35.0.0/16 network.

 


Suggested Answer: D

Community Answer: D

 

Question 5

Which two statements describe IPv4 default behavior for BGP? (Choose two.)

A. All active BGP routes are exported to configured EBGP neighbors.

B. All BGP routes are exported to configured EBGP neighbors.

C. All BGP routes are imported into the inet4.0 routing table.

D. All BGP routes are imported into the inet.0 routing table.

 


Suggested Answer: AD

Community Answer: AD

 

Question 6

Image
Referring to the exhibit, which command will change the 172.16.10.1/24 IP address to 172.16.100.1/24 IP address?

A. copy interfaces ge-0/0/2 unit 0 family inet address 172.16.10.1/24 to address 172.16.100.1/24

B. rename interfaces ge-0/0/2 unit 0 family inet address 172.16.10.1/24 to address 172.16.100.1/24

C. set interfaces ge-0/0/2 unit 0 family inet address 172.16.100.1/24

D. insert interfaces ge-0/0/2 unit 0 family inet address 172.16.10.1/24 before address 172.16.100.1/24

 


Suggested Answer: B

 

Question 7

What is an `X` release of the Junos OS?

A. a standard feature release

B. a feature velocity release

C. a special feature release

D. a feature beta release

 


Suggested Answer: C

Community Answer: C

 

Question 8

Which two statements are true about static routes in the Junos OS? (Choose two.)

A. Static routes remain in the routing table until you remove them or until they become inactive.

B. Static routes must have a next hop defined.

C. Static routes are learned by neighboring devices and added to their routing tables.

D. Static routes are defined at the [edit routing-instances] hierarchy.

 


Suggested Answer: AB

Community Answer: AB

 

Question 9

Which statement is true about the orlonger route-filter match type?

A. All routes within the specified prefix that are longer than or equal to the given prefix are considered a match.

B. All routes within the specified prefix that are longer or equal to the given prefix up to a defined acceptable prefix length are considered a match.

C. All routes within the specified prefix that are longer than the given prefix up to a defined acceptable prefix length are considered a match.

D. All routes within the specified prefix that are longer than the given prefix are considered a match.

 


Suggested Answer: D

Community Answer: A

 

Question 10

Image
Referring to the exhibit, which dynamic routing protocol would be used for this topology?

A. IGMPv3

B. RIPng

C. RIP

D. OSPFv2

 


Suggested Answer: B

 

Question 11

What are two benefits realized by the disaggregated Junos OS? (Choose two.)

A. There is increased flexibility to use different control plane versions.

B. The Junos VM becomes hardware-independent and can be deployed on any hypervisor without modification.

C. The architecture facilitates programmability through provisioning the control plane, the data path, and the platform APIs.

D. The platform drivers and forwarding engine are removed from the control plane to increase performance.

 


Suggested Answer: CD

Community Answer: CD

 

Question 12

You are attempting to upgrade the Junos OS on your device, but there is not enough space to complete the upgrade.
Which parameter, added to the request system software add command, would solve the problem?

A. validate

B. force

C. no-validate

D. no-copy

 


Suggested Answer: D

Community Answer: D

 

Question 13

Which 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

 


Suggested Answer: A

 

Question 14

Which two statements are true about the default behavior of Junos routing policies? (Choose two.)

A. Routing policies control the flow of routing information going to and from the forwarding table.

B. Routing policies control the flow of routing information going to and from the routing table.

C. Routing policies can export active and inactive routes.

D. Routing policies can export only active routes.

 


Suggested Answer: BD

 

Question 15

Which two interfaces are considered physical interfaces? (Choose two.)

A. ge-0/0/0

B. et-7/1/4.0

C. et-3/0/0:0.501

D. xe-10/2/1

 


Suggested Answer: AD

Community Answer: AD

 

Question 16

Image
Which next-hop interface will be used to reach the 10.21.14.16 destination as shown in the exhibit?

A. ge-0/0/0.0

B. ge-0/0/2.0

C. ge-0/0/1.0

D. ge-0/0/3.0

 


Suggested Answer: C

 

Question 17

What is the default location of the primary syslog file on Junos devices?

A. /var/log/

B. /var/tmp/

C. /var/home/

D. /var/db/

 


Suggested Answer: A

Community Answer: A

 

Question 18

Image
Referring to the exhibit, which logical interface is able to forward IP traffic?

A. ge-0/0/2.0

B. ge-0/0/0

C. ge-0/0/1.0

D. ge-0/0/2

 


Suggested Answer: C

 

Question 19

What is the purpose of the load merge command?

A. to look for a replace tag in the configuration you load

B. to combine the current configuration with the configuration you load

C. to add or delete variables from the configuration based on the contents of a specified patch file

D. to completely overwrite the current configuration with the configuration you load

 


Suggested Answer: B

Community Answer: B

 

Question 20

What are two configurable physical interface properties? (Choose two.)

A. protocol family

B. address

C. MTU

D. link mode

 


Suggested Answer: CD

Community Answer: CD

 

Question 21

Image
What is the next hop for a packet destined to 192.168.80.98 as shown in the exhibit?

A. 172.18.6.1

B. 172.25.11.254

C. 172.18.7.1

D. 192.168.11.2

 


Suggested Answer: A

Community Answer: A

 

Question 22

Which two platforms are supported in both physical and virtual form factors? (Choose two.)

A. NFX Series

B. MX Series

C. SRX Series

D. ACX Series

 


Suggested Answer: BC

 

Question 23

Image
Referring to the exhibit, which statement is correct when traffic is received from 10.10.10.4?

A. The traffic is counted and rejected.

B. The traffic is only accepted.

C. The traffic is counted and accepted.

D. The traffic is only rejected.

 


Suggested Answer: A

Community Answer: C

 

Question 24

What is the minimum system-defined user class required to issue clear commands?

A. read-only

B. operator

C. authorized

D. super-user

 


Suggested Answer: B

Community Answer: B

 

Question 25

Which two statements describe a routing policy? (Choose two.)

A. Attribute changes applied to export policies always affect the local routing table.

B. Routing policies are used to choose which routes are sent to neighbors using dynamic routing protocols.

C. Active and inactive routes are available for export from the routing table.

D. A routing policy allows you to control the flow of information into the routing table.

 


Suggested Answer: BD

 

Question 26

Which parameter would you use to prohibit the redistribution of a static route used for management traffic?

A. discard

B. passive

C. reject

D. no-readvertise

 


Suggested Answer: D

 

Question 27

Which command is used to replace the entire current configuration?

A. load replace

B. load set

C. load patch

D. load override

 


Suggested Answer: D

Community Answer: D

 

Question 28

Image
Referring to the exhibit, what is the expected behavior for login attempts from users that receive a reject form from both the RADIUS and TACACS+ servers?

A. Users are prompted for a local authentication password.

B. Users are not prompted for a local authentication password.

C. Users are prompted for the root authentication password.

D. Users are granted limited access to the device using a guest account.

 


Suggested Answer: B

 

Question 29

You have configured an SRX Series device for the first time. When you commit your configuration, the Junos OS notifies you that you cannot yet commit your configuration.
Which configuration step must you complete?

A. date/time

B. root authentication

C. security policies

D. hostname

 


Suggested Answer: B

Community Answer: B

 

Question 30

How would you change the display so that 40 lines will be displayed in the terminal program when you are logged into a Junos device?

A. Issue the set cli screen-length 40 command from operational mode.

B. Set the display options in your terminal program.

C. Issue the set cli screen-length 40 command from configuration mode.

D. Set the window size of your terminal program.

 


Suggested Answer: A

 

Question 31

What is the initial prompt displayed when logging in as the root user?

A. root@router>

B. root@router%

C. root@router#

D. root@router*

 


Suggested Answer: B

Community Answer: B

 

Question 32

You notice that the terms in your firewall filter are not in the correct order.
What would solve this problem?

A. Use the next term action to force an evaluation of the next term.

B. Use the insert command to reorder the terms within the filter.

C. Use the count parameter to ensure that the terms are evaluated correctly.

D. Use the reject action to change the action of the filter.

 


Suggested Answer: B

 

Question 33

What is the maximum number of configurations, by default, that are recoverable using the rollback command?

A. 50

B. 25

C. 100

D. 75

 


Suggested Answer: A

Community Answer: A

 

Question 34

Image
Referring to the exhibit, what will be the result?

A. The device will boot in single-user mode at the operational prompt.

B. The device will boot in multi-user mode at the configuration prompt.

C. The device will boot into single-user mode at the shell prompt.

D. The device will boot into multi-user mode at the shell prompt.

 


Suggested Answer: C

Community Answer: A

 

Question 35

You successfully established a BGP session with a peer, but do not see any routes learned from the peer.
What would cause this problem?

A. A routing policy is blocking BGP from learning the routes.

B. A security policy is blocking BGP from learning the routes.

C. Unicast reverse-path-forwarding is blocking BGP from learning the routes.

D. The firewall filter is blocking BGP from learning the routes.

 


Suggested Answer: A

 

Question 36

Image
Referring to the exhibit, which action would synchronize the local router's clock with the NTP server?

A. Issue the set date ntp operational command.

B. Configure the correct NTP trusted key using the set trusted-key configuration command under the [edit system ntp] hierarchy.

C. Configure the NTP server using the set boot-server 172.25.11.254 configuration command under the [edit system ntp] hierarchy.

D. Reboot the router.

 


Suggested Answer: B

Community Answer: A

 

Question 37

Given the configuration shown below:
set system authentication-order [ tacplus ]
Which two statements are correct? (Choose two.)

A. If the TACACS+ server is not available, the local user database is checked.

B. If the TACACS+ server is available and rejects the username/password provided, the user is not allowed to access the device.

C. If the TACACS+ server is not available, the user is not allowed to access the device.

D. If the TACACS+ server is available and rejects the username/password provided, the local password database is checked.

 


Suggested Answer: AB

Community Answer: BC

 

Question 38

A Junos device is configured with multiple routing protocols to the same destination prefix.
By default, which route will be active in the forwarding table?

A. an OSPF route

B. an IS-IS route

C. a BGP route

D. a static route

 


Suggested Answer: D

 

Question 39

In which directory are traceoption files stored by default?

A. /var/tmp/

B. /var/log/

C. /var/db/

D. /var/home/

 


Suggested Answer: B

 

Question 40

Image
Which statement is true about the command shown in the exhibit?

A. There needs to be a ; after top for the command to be accepted as a valid command.

B. Only top should be used, no other options are allowed on the same line.

C. The command shown in the exhibit would be accepted as a valid command.

D. If you replace top with up command, it becomes valid.

 


Suggested Answer: C

Community Answer: C

 

Question 41

Which account is used to access a Junos device in a factory-default configuration?

A. root

B. admin

C. lab

D. juniper

 


Suggested Answer: A

Community Answer: A

 

Question 42

Routing policies contain which two types of statements? (Choose two.)

A. then

B. from

C. default

D. and

 


Suggested Answer: AB

Community Answer: AB

 

Question 43

When multiple users are editing the configuration on a Junos device, what is the default behavior when a user issues a commit command?

A. All valid configuration changes made by all users will take effect.

B. The user’s configuration changes are committed; other users’ configuration changes are still pending.

C. The user will receive an error message disallowing a commit of the configuration.

D. The user’s configuration changes are committed; other users will be exited from configuration mode.

 


Suggested Answer: A

Community Answer: A

 

Question 44

A Junos device is in a factory-default configuration and no host name is set.
What is used in place of a host name in this scenario?

A. router

B. amnesiac

C. Junos

D. user

 


Suggested Answer: B

Community Answer: B

 

Question 45

Image
Referring to the exhibit, which two statements are correct? (Choose two.)

A. The memory utilization is 28%.

B. The memory utilization is 72%.

C. The 15 minute CPU load average is 99%.

D. The CPU kernel utilization is 1%.

 


Suggested Answer: AD

 

Question 46

Image
You are asked to limit traffic on interface xe-0/0/3 to 1G using the policer shown in the exhibit.
Which configuration would accomplish this task?
A.
 Image
B.
 Image
C.
 Image
D.
 Image

 


Suggested Answer: B

 

Question 47

Image
Referring to the exhibit, which command will cause this event message?

A. request system halt

B. request system logout

C. request system recover

D. request system commit

 


Suggested Answer: A

 

Question 48

By default, which character indicates the UNIX shell prompt?

A. #

B. %

C. $

D. >

 


Suggested Answer: B

Community Answer: B

 

Question 49

Which two features are implemented on the Packet Forwarding Engine? (Choose two.)

A. firewall filters

B. chassis management

C. class of service

D. routing protocol updates

 


Suggested Answer: AC

 

Question 50

You are considering an upgrade from 19.1R1 and want to ensure that only bug fixes are included.
Which two software versions should you consider in this situation? (Choose two.)

A. 19.3R1-S1

B. 19.3R2

C. 19.1R3

D. 19.1R1-S2

 


Suggested Answer: CD

Community Answer: CD

 

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