Juniper Automation and DevOps JN0-221 Questions & Answers

• Question 41:

  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

  Correct Answer: AC

  Reference: https://www.juniper.net/documentation/en_US/junos/topics/example/rest-api-explorerexample.html

• Question 42:

  Click the Exhibit button.

  >>> print(hardware_count)

  {`MX960':10, `SRX300': 22, `QFX5100': 4}

  Referring to the exhibit, what is the correct method to retrieve the value associated only with "MX960"?

  A. hardware_count.keys()

  B. hardware_count.values()

  C. hardware_count[0]

  D. hardware_count["MX960"]

  Correct Answer: A

• Question 43:

  Which two processes does Junos automation use? (Choose two.)

  A. chassisd

  B. jsd

  C. dcd

  D. mgd

  Correct Answer: BD

  Reference: https://coggle.it/diagram/XW0atWn5-1ccZJer/t/junos-automation-stack

• Question 44:

  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”) ...

  Correct Answer: B

  Reference: https://packetpushers.net/using-python-context-managers/

• Question 45:

  Which two Python packages use NETCONF to interact with Junos devices? (Choose two.)

  A. numpy

  B. jsnapy

  C. junos-eznc

  D. pyyaml

  Correct Answer: BC

• Question 46:

  Which two statements about Ansible are true? (Choose two.)

  A. Ansible modules only execute a change if required

  B. By default, Ansible core modules use NETCONF to connect to the remote host

  C. By default, Ansible playbooks are executed locally

  D. Ansible uses an agentless architecture

  Correct Answer: BD

  Reference: https://www.juniper.net/documentation/en_US/junos-ansible/topics/concept/junos-ansibleoverview.html#:~:text=Ansible%20uses%20an%20agentless%20architecture,software%20on%20the% 20managed%20nodes.andtext=Thus% 2C%20Ansible%20users%20can%20get,of%20Python%20to%20use %20Ansible

• Question 47:

  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

  Correct Answer: D

  Reference: https://www.vmware.com/topics/glossary/content/infrastructure-as-code

• Question 48:

  Which two statements about DevOps are correct? (Choose two.)

  A. DevOps is a methodology that allows for frequent, quick modifications

  B. DevOps is a methodology that ensures that collaboration does not occur across organizational boundaries

  C. DevOps is a methodology used to develop software or systems D. DevOps is a methodology that is limited to small codebase development

  Correct Answer: AC

  Reference: https://www.juniper.net/us/en/products-services/what-is/devnetops/

• Question 49:

  Which statement about element nodes is correct?

  A. Only a single root element node is allowed

  B. Element nodes only consist of a single line of code

  C. Element nodes cannot be nested in other element nodes

  D. Only the root element node can contain other element nodes

  Correct Answer: B

• Question 50:

  Click the Exhibit button.

  

  Referring to the exhibit, what will be two results of this playbook before saving it to a file? (Choose two.)

  A. to include everything but the system/services

  B. to retrieve the committed configuration

  C. to include only the system/services

  D. to retrieve the candidate configuration

  Correct Answer: BC