JN0-221 Online Practice Questions and Answers

As part of an application to manage network devices, you must query hundreds of network devices and return the unique set of IP prefixes blocked by configured firewall filters. To accomplish this task, you will require a mutable data type that contains unordered, unique elements.

Which Python data type will fulfill these requirements?

A. dictionaries

B. lists

C. tuples

D. sets

Which statement is correct about Infrastructure as Code (IaC)?

A. It is an infrastructure that runs identical operating systems

B. It is an infrastructure where devices are entirely virtualized

C. It is an infrastructure that is used for beta code testing

D. It is an infrastructure where devices are managed like software

Which Python code block is an example of a context manager?

A. while True: device – Device(host-“vmx-1”, user-“lab”, passwd-“lab123”) ...

B. try: device – Device(host-“vmx-1”, user-“lab”, passwd-“lab123”)

...

except:

print(“Unable to connect to the vMX1”)

C. with Device(host=”vmx-1”, user=”lab”, passwd=”lab123”) as device: ...

D. for host in [“vmx-1”, “vmx-2”]: device – Device(host-host, user-“lab”, passwd-“lab123”) ...

You are using the curl tool to include multiple RPCs in a REST API request.

Which HTTP method must be used for this request?

A. GET

B. PUT

C. POST

D. HEAD

What is an example of correct XML syntax?

A. vMX1

B. vMX1

C. vMX1

D. vMX1

Which API does the Junos CLI use to modify the configuration database?

A. REST API

B. XML API

C. JET API

D. RPC API

What will determine which data serialization format is used for interfacing with a system?

A. programming language version

B. the operating system

C. IDE specifications

D. the system's API

Which statement about using Ansible with a Junos device is correct?

A. Ansible modules are executed on the control server

B. SFTP must be used to allow communication between the Ansible control server and the Junos device

C. An Ansible agent must be installed and running on the Junos device

D. An Ansible playbook is a set of tasks written in XML

Which two tools should be used to test REST APIs? (Choose two.)

A. curl

B. Puppet

C. Chef

D. Postman

Which Junos system process handles NETCONF automation commands?

A. snmpd

B. eventd

C. mgd

D. jsd