Juniper Automation and DevOps Specialist (JNCIS-DevOps) JN0-421 Dumps in PDF

Free Juniper JN0-421 Real Questions (page: 12)

Which two statements are correct about JSON characteristics? (Choose two)

  1. JSON is a supported template language
  2. JSON is easy to read for humans and devices
  3. JSON uses ## for comments
  4. JSON is programming language independent

Answer(s): B,D



Click the Exhibit button.
Exhibit:



Where would the Python code shown in the exhibit be used?

  1. a commit script
  2. an op script
  3. an event script
  4. an SNMP script

Answer(s): D



Click the Exhibit button.
Exhibit:



While using NETCONF, the developer attempts to lock the configuration, but the error shown in the exhibit is received. The developer verifies no one else is configuring the device. According to Juniper, how would you clear the error in this scenario?

  1. Log in with another NETCONF session, reboot the instance, and save the original configuration
  2. Log in with another NETCONF session and enter the <rpc><close-session>8099</close- session></rpc>]]>]] command
  3. Log in with another NETCONF session and enter the <rpc><kill-session><session- id>8099</session-id></kill-session></rpc>]]>]]> command
  4. Log in with another NETCONF session and enter the <rpc><kill-session><session-
    id>user02</session-id></kill-session></rpc>]]>]]> command

Answer(s): C

Explanation:

https://www.juniper.net/documentation/en_US/junos/topics/reference/tag-summary/netconf-kill- session.html



A customer has a control machine with a default Ansible installation. During execution of an Ansible module against a Junos device, the Ansible control machine generates the msg: unable to connect to router1.example.com: ConnectRefusedError (router1.example.com) error.
What is the cause for this error?

  1. router1.example.com was not defined in /etc/hosts on the control machine
  2. Ansible cannot connect to the device through NETCONF
  3. router1.example.com was not defined in /etc/ansible/inventory/hosts on the control machine
  4. Ansible cannot authenticate to the device

Answer(s): B


Reference:

https://www.juniper.net/documentation/en_US/junos-ansible/topics/task/troubleshooting/junos- ansible-connection-errors-troubleshooting.html



Which statement describes the relationship between YANG and NETCONF?

  1. YANG is the programming language used to generate base classes to develop the NETCONF protocol
  2. NETCONF models XML data used to program YANG modules
  3. YANG models the state and configuration data manipulated by the NETCONF protocol
  4. NETCONF is the programming language used to create the state and configuration data manipulated by YANG

Answer(s): C



Share your comments for Juniper JN0-421 exam with other users:

D
Don
4/11/2026 5:36:42 AM

Recommend using AI for Solutions rather the Answer(s) submitted here

M
Mogae Malapela
4/8/2026 6:37:56 AM

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A
Anon
4/6/2026 5:22:54 PM

Are these the same questions you have to pay for in ExamTopics?

L
LRK
3/22/2026 2:38:08 PM

For Question 7 - while the answer description indicates the correct answer, the option no. mentioned is incorrect. Nice and Comprehensive. Thankyou

R
Rian
3/19/2026 9:12:10 AM

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G
Gerrard
3/18/2026 6:58:37 AM

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V
Vineet Kumar
3/6/2026 5:26:16 AM

interesting

J
Joe
1/20/2026 8:25:24 AM

Passed this exam 2 days ago. These questions are in the exam. You are safe to use them.

N
NJ
12/24/2025 10:39:07 AM

Helpful to test your preparedness before giving exam

A
Ashwini
12/17/2025 8:24:45 AM

Really helped

J
Jagadesh
12/16/2025 9:57:10 AM

Good explanation

S
shobha
11/29/2025 2:19:59 AM

very helpful

P
Pandithurai
11/12/2025 12:16:21 PM

Question 1, Ans is - Developer,Standard,Professional Direct and Premier

E
Einstein
11/8/2025 4:13:37 AM

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D
David
10/31/2025 4:06:16 PM

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T
Thor
10/21/2025 5:16:29 AM

Anyone used this dump recently?

V
Vladimir
9/25/2025 9:11:14 AM

173 question is A not D

K
khaos
9/21/2025 7:07:26 AM

nice questions

K
Katiso Lehasa
9/15/2025 11:21:52 PM

Thanks for the practice questions they helped me a lot.

E
Einstein
9/2/2025 7:42:00 PM

Passed this exam today. All questions are valid and this is not something you can find in ChatGPT.

V
vito
8/22/2025 4:16:51 AM

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M
Matt
7/31/2025 11:44:40 PM

Great questions.

O
OLERATO
7/1/2025 5:44:14 AM

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A
Adekunle willaims
6/9/2025 7:37:29 AM

How reliable and relevant are these questions?? also i can see the last update here was January and definitely new questions would have emerged.

A
Alex
5/24/2025 12:54:15 AM

Can I trust to this source?

S
SPriyak
3/17/2025 11:08:37 AM

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C
Chandra
11/28/2024 7:17:38 AM

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S
Sunak
1/25/2025 9:17:57 AM

Can I use this dumps when I am taking the exam? I mean does somebody look what tabs or windows I have opened ?

F
Frank
2/15/2024 11:36:57 AM

Finally got a change to write this exam and pass it! Valid and accurate!

A
Anonymous User
2/2/2024 6:42:12 PM

Upload this exam please!

N
Nicholas
2/2/2024 6:17:08 PM

Thank you for providing these questions. It helped me a lot with passing my exam.

T
Timi
8/19/2023 5:30:00 PM

my first attempt

B
Blessious Phiri
8/13/2023 10:32:00 AM

very explainable

M
m7md ibrahim
5/26/2023 6:21:00 PM

i think answer of q 462 is variance analysis

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