Juniper JN0-223 Exam Practice Test Instant Access

Question 1

What is an example of correct XML syntax?

A<Device3><ho3tname>vMX1</hostname><Devices/>

B<Devices><hostname>vMX1<De vices/X/hostname>

C<Devices><hostname>vMX1<Devices/>

D<Devices><hostname>vMX1</ho3tnameX/Device3>

Answer : B

Question 2

Junos PyEZ tables are formatted using which file type?

ASON

BYAML

Ctxt

DIXML

Answer : B

Junos PyEZ uses YAML (YAML Ain't Markup Language) files to define the format for tables and views when working with operational and configuration data. YAML is a human-readable data format that is commonly used for configuration files, making it suitable for defining data structures in PyEZ.

Option B (YAML) is correct because PyEZ tables are defined using YAML files.

Options A (JSON), C (txt), and D (IXML) are incorrect in this context, as YAML is the standard format used.

Supporting Reference:

Junos PyEZ Tables Documentation: Explains the use of YAML files for formatting tables and views in Junos PyEZ.

Question 3

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

Athe system's API

Bthe operating system

Cprogramming language version

DIDE specifications

Answer : A

Question 4

You want to perform a dry run on the myPlays playbook and use a custom inventory file called myRouters.ini.

Which Ansible command would you use in this scenario?

Aansible-playbook myPlays --check -i myRouters.ini

Bansible-playbook myPlays ---extra-vars 'inventory_file=myRouters .ini'

Cansible-playbook myPlays ---extra-vars 'dry run=True' myRouters.ini

Dansible-playbook myPlays ---limit myRouters

Answer : B

Question 5

Your organization is developing an application to automate management of Junos network appliances. You want to use the existing PyEZ libraries to improve the development process. Which API would satisfy this requirement?

AREST API

BJETAPI

CRPC API

DXML API

Answer : A

Question 6

Which statement is correct about DevOps?

ADevOps is a collection of strict guidelines that promotes the project completion over all other aspects.

BDevOps is meant to define and restrict the development and operations tools used for a project.

CDevOps is meant to unite the development, operations, and other teams to improve project collaborations.

DDevOps is a defined standard written and maintained by the IEEE standards group.

Answer : C

DevOps is a set of practices, tools, and cultural philosophies that aims to integrate and automate the processes between software development and IT operations teams. The primary goal of DevOps is to shorten the systems development life cycle and provide continuous delivery with high software quality.

Option C is correct because DevOps fundamentally focuses on breaking down the silos between development and operations teams, fostering a collaborative environment where these teams work together throughout the entire software lifecycle. This collaboration extends to other stakeholders, including quality assurance (QA), security, and more, to ensure that the product is continuously delivered and improved based on real-time feedback.

DevOps promotes a cultural shift where teams are no longer isolated but work together to share responsibilities, which leads to increased efficiency, faster problem resolution, and a more streamlined deployment process. This culture of collaboration is supported by various automation tools and practices such as Continuous Integration (CI), Continuous Deployment (CD), Infrastructure as Code (IaC), and automated testing.

Supporting Reference:

Juniper Networks Automation and DevOps Documentation: This documentation emphasizes the importance of collaboration between development and operations teams to streamline processes and improve efficiency, aligning perfectly with the principles of DevOps.

'The DevOps Handbook' by Gene Kim, Patrick Debois, John Willis, and Jez Humble: This book provides an in-depth look into how DevOps practices enhance collaboration and lead to faster, more reliable software delivery.

IEEE and Industry Standards: While DevOps practices are widely adopted, they are not defined or maintained by IEEE or any other formal standards body, which is why option D is incorrect.

Question 7

Given the following Python script:

a = [1,2,3,4,5,6,7,8,9]

print(a[0])

What is the output of this print command?

Answer : A

In Python, lists are zero-indexed, meaning the first element of the list is at index 0. The given script is:

pythona = [1, 2, 3, 4, 5, 6, 7, 8, 9]

print(a[0])

a[0] refers to the first element in the list a, which is 1.

So, the output of the print(a[0]) command is 1.

Option A is correct because Python indexing starts at 0, making the first element of the list at index 0.

Python Official Documentation: Covers list indexing and operations.

Python Programming Tutorials: Provide examples of list indexing.

Juniper Automation and DevOps, Associate JN0-223 Exam Practice Test