Juniper JN0-221 Online Practice Questions and Exam Preparation

Juniper JN0-221 Online Questions & Answers

• Question 1:

  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
  A. DevOps is a methodology that allows for frequent, quick modifications
  C. DevOps is a methodology used to develop software or systems

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

• Question 2:

  PyEZ supports which three connection methods? (Choose three.)

  A. Telnet
  B. RESTCONF
  C. REST
  D. console
  E. NETCONF
  A. Telnet
  D. console
  E. NETCONF

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  Reference: https://www.juniper.net/documentation/en_US/junos-pyez/topics/task/program/junos-pyez-connection-methods.html#:~:text=Junos%20PyEZ%20Users.-,Connection%20Methods%20Overview,CONSOLE%20port%20on%20a% 20device

• Question 3:

  What is the default port for NETCONF connections over SSH?

  A. 22
  B. 830
  C. 443
  D. 8080
  A. 22

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  Reference: https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/port-edit-system-services-netconf.html#:~:text=The%20default%20SSH%20port%20(22,in%20the%20login%20event%20script

• Question 4:

  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
  C. tuples

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  Reference: https://docs.python.org/2/library/sets.html

• Question 5:

  Which two programing languages would be used for on-box scripting with Junos devices? (Choose two.)

  A. Ansible
  B. Python
  C. XSLT
  D. Puppet
  B. Python
  C. XSLT

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  Reference: https://eng.juniper.net/site/global/build/operating_system/junos/management_plane/on_box_automation/index.gsp

• Question 6:

  Given the username XML code, what is the information between the opening and closing tags called?

  A. name node
  B. data node
  C. text node
  D. element node
  D. element node

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  Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/junos-script-automation-xml-overview.html

• Question 7:

  Click the Exhibit button.

  

  In the XML output shown in the exhibit, what is the full XPath for the IP address of the interface?

  A. /interface/unit/family/inet/address
  B. /configuration/interface/unit/family/inet/address
  C. /configuration/interfaces/interface/unit/family/inet/address/name
  D. /interfaces/interface/unit/family/inet/address
  C. /configuration/interfaces/interface/unit/family/inet/address/name

• Question 8:

  What are two popular methods of data serialization? (Choose two.)

  A. Python
  B. JSON
  C. SLAX
  D. YAML
  A. Python
  D. YAML

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  Reference: https://docs.python-guide.org/scenarios/serialization/

• Question 9:

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

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

• Question 10:

  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
  B. By default, Ansible core modules use NETCONF to connect to the remote host
  D. Ansible uses an agentless architecture

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