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  1. Home
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  3. JN0-421

Juniper JN0-421 Exam (page: 1)
Juniper Automation and DevOps Specialist (JNCIS-DevOps)
Updated on: 25-Dec-2025

Viewing Page 1 of 14
JN0-421 PDF 65 Questions

Which command is valid for accessing a Junos device using the RESTful API on the default port?









Answer(s): C



You need to reset all Junos systems in your lab to their factory-default state and then push a new configuration to the device.
Which two Ansible modules would your playbook use to accomplish this task? (Choose two)

  1. junos_system_services
  2. junos_zeroize
  3. junos_get_facts
  4. junos_install_config

Answer(s): B,D


Reference:

https://www.juniper.net/documentation/en_US/junos-ansible1.0/topics/example/junos-ansible- playbooks-device-zeroize.html https://www.juniper.net/documentation/en_US/junos-ansible1.0/topics/example/junos-ansible- playbooks-device-configuring.html



Click the Exhibit button.
Exhibit:
Ansible playbook:



The r0 device is currently in a factory-default state. The console connection of r0 is reachable using Telnet on TCP port 555 of the console_server host.
Referring to the exhibit, which statement is true?

  1. The device does not require configuration changes for the playbook to run successfully
  2. The Telnet service must be configured for the playbook to run successfully
  3. A password for the root user must be configured for the playbook to run successfully
  4. The NETCONF service must be configured for the playbook to run successfully

Answer(s): D



Click the Exhibit button.
Exhibit:



You are using RubyEZ to interact with a Junos device: however, you are not successfully connecting to the device.
Referring to the exhibit, what is the problem?

  1. Argument passed to Netconf:: SSH.new statement must be referenced as variables
  2. Netconf::SSH.new statement only expects an IP address of the target device
  3. Netconf::SSH.new statement arguments must be hashes
  4. A Junos::Ez::Provider statement is missing before the Netconf::SSH. New statement

Answer(s): A



Click the Exhibit button.
Exhibit:



How would you test the configuration snippet shown in the exhibit?

  1. Use the root@router% logger SSHD_LOGIN_FAILED command
  2. Use the root@router% logger -e SSHD_LOGIN_FAILED command
  3. Use the root@router% test SSHD_LOGIN_FAILED command
  4. Use the root@router% event SSHD_LOGIN_FAILED command

Answer(s): B



Viewing Page 1 of 14



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