JN0-420 Online Practice Questions and Answers

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

A. curl http://192.168.1.1/rpc/get-interface-information?interface-name=1o0 –u “user:pass123”

B. curl http://user:[email protected]/rpc/get-interface-information?interface-name=1o0

C. curl –u “user:pass123” http://192.168.1.1:80/rpc/get-interface-information?interface-name=1o0

D. curl http://user:[email protected].:3000/rpc/get-interface-information?interface-name=1o0

Click the Exhibit button. Exhibit:

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

A. Use the root@router% logger SSHD_LOGIN_FAILED command

B. Use the root@router% logger -e SSHD_LOGIN_FAILED command

C. Use the root@router% test SSHD_LOGIN_FAILED command

D. Use the root@router% event SSHD_LOGIN_FAILED command

In SLAX, what is the difference between the jcs:invoke () and the jcs:execute () functions?

A. RPCs called by jcs:execute () are executed within an existing connection

B. RPCs called by jcs:invoke () are executed within an existing connection

C. RPCs called by jcs:invoke () are not executed until the conclusion of the script

D. RPCs called by jcs:execute () are not executed until the conclusion of the script

Which statement is true about a Junos ephemeral configuration database?

A. It can be used to trigger a commit script

B. It can be used to reduce commit time

C. It can be used to archive previous versions of the ephemeral configuration

D. It can be used to validate configuration data semantics

Which two automation frameworks are agentless when managing Junos devices? (Choose two)

A. SaltStack

B. Ansible

C. Puppet

D. Chef

You are asked to write an application that interacts directly with the internal APIs belonging to rpd. Which statement is true in this scenario?

A. You must write the application using the XML APIs

B. You must write the application using the REST APIs

C. You must write the application using the JET APIs

D. You must write the application using the YANG APIs

What are two format distinctions to know when using YAML? (Choose two)

A. white space indentation sensitive

B. tab indentation not allowed

C. tab indentation allowed

D. white space indentation insensitive

What are three supported languages for operational scripts on Junos devices? (Choose three)

A. Python

B. XSLT

C. SLAX

D. Java

E. PHP

You want to implement a function that is available in the Junos OS , but not defined in a standard model. Which statement would you use with YANG to accomplish this task?

A. augment

B. deviation

C. case

D. choice

Using the RESTful API on a Junos device, you are able to retrieve configuration information in which three formats? (Choose three)

A. YAML

B. XML

C. plain text

D. GPB E. JSON