JN0-420 Online Practice Questions and Answers

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?

A. Argument passed to Netconf:: SSH.new statement must be referenced as variables

B. Netconf::SSH.new statement only expects an IP address of the target device

C. Netconf::SSH.new statement arguments must be hashes

D. A Junos::Ez::Provider statement is missing before the Netconf::SSH. New statement

You are asked by your manager to automatically switch traffic from the primary link to the backup link on the MX Series device at the branch site whenever latency is above 300 ms over a 5-minute period. Which type of Junos script would you use in this scenario?

A. Op

B. SNMP

C. Commit

D. Event

You want to enable an unsigned Python op script named inventory.py that will be stored on a local Junos

device.

Which two commands are needed to accomplish this task? (Choose two)

A. set system scripts op allow-url-for-python

B. set system scripts op file inventory.py

C. set system scripts op no-allow-url

D. set system scripts language python

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

To which component(s) does the JET service APIs provide access?

A. YANG modules

B. XML APIs

C. control plane

D. forwarding plane

What is correctly formatted JSON string?

A. Option A

B. Option B

C. Option C

D. Option D

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

Click the Exhibit button. Exhibit:

What will executing the program shown in the exhibit retrieve from a Junos device?

A. the previous configuration changes of the device

B. the current memory utilization

C. the FPC inventory of the device

D. the current software version on the device