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Juniper JN0-224 Exam Syllabus Topics:

Topic
Details

Topic 1

Data Serialization: This domain addresses YAML and JSON formats used for structured data representation and exchange in network automation workflows.

Topic 2

Python
PyEZ: This domain examines Python programming with PyEZ library for Junos automation, including JSNAPy, Jinja2 templates, RPC calls, exception handling, and device configuration management.

Topic 3

Rest API: This domain covers Junos REST API implementation, REST API Explorer tool, and cURL usage for HTTP-based device management and configuration.

Topic 4

Junos Automation Stack and DevOps Concepts: This domain covers fundamental automation tools, frameworks, APIs, and DevOps culture applicable to Junos platform operations and network management.

Topic 5

NETCONF
XML API: This domain focuses on XML syntax, XPath expressions, NETCONF protocol, and XML API functionality for programmatic device configuration and communication.

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Juniper Automation and DevOps, Associate (JNCIA-DevOps) Sample Questions (Q45-Q50):

NEW QUESTION # 45
You are asked to use the REST API to retrieve interface configuration information from your Junos device. You decide to use a cURL HTTP GET command to retrieve this information.
In this scenario, which two statements are correct? (Choose two.)

A. You must have SSH enabled on the Junos device.
B. You can retrieve this data in XML or JSON formats.
C. You must Include the authentication Information with each request.
D. You can retrieve this data in HTML or JSON formats.

Answer: B,C

Explanation:
When using the REST API to retrieve interface configuration information from a Junos device:
Data Formats (C): The information can be retrieved in XML or JSON formats. These are the two standard data formats supported by the Junos REST API for representing configuration and operational data.
Authentication (D): For each HTTP request, especially when using tools like cURL, authentication information must be included. This is typically done using basic authentication (username and password) or an authentication token.
Option A is incorrect because HTML is not a supported format for REST API data retrieval in Junos, and Option B is incorrect because SSH is not required for REST API requests; the REST API typically uses HTTP/HTTPS.
Reference:
Junos REST API Documentation: Details the data formats (XML, JSON) supported by the Junos REST API and the need for authentication.
cURL Usage with REST API: Provides examples of how to use cURL with Junos REST API, including the necessity of providing authentication.

NEW QUESTION # 46
Which type of on-box automation script is designed to run every time a user executes a configuration change?

A. SNMP
B. operation
C. event
D. commit

Answer: D

Explanation:
In Junos OS, a commit script is an on-box automation script that runs every time a configuration change is committed. Commit scripts are used to enforce configuration policies, validate configuration changes, or make automatic adjustments to configurations when certain conditions are met.
Commit Script (C): Executes automatically during the commit process, ensuring that the new configuration adheres to specific rules or conventions before it is applied to the system.
Event, SNMP, and operation scripts are used for other purposes in Junos automation but do not run automatically with every configuration change.
Reference:
Junos OS Automation Scripts Guide: Provides details on different types of scripts, including commit scripts, and their use cases.
Juniper Networks Documentation: Offers examples and best practices for creating and using commit scripts.

NEW QUESTION # 47
What is the correct Python script syntax to prompt for input?

A. hostIP = input{Device IP address: }
B. hostIP = input("Device IP address: ")
C. hostIP = input"Device IP address: "
D. input("Device IP address: ") = hostIP

Answer: B

Explanation:
In Python, the correct syntax to prompt the user for input and store that input in a variable is:
input(prompt): The input() function is used to take input from the user. The string provided as an argument (inside the parentheses) is displayed as a prompt to the user. The input provided by the user is returned as a string and can be stored in a variable.
Example:
hostIP = input("Device IP address: ")
In this example, "Device IP address: " is the prompt displayed to the user, and the user's input will be stored in the variable hostIP.
Options B, C, and D are syntactically incorrect in Python.
Reference:
Python Official Documentation: Describes the use of the input() function for getting user input.
Python Tutorials: Various tutorials demonstrate how to properly use the input() function in scripts.

NEW QUESTION # 48
Using the set rest control configuration command, what are two ways to control access to the REST API running on a Junos device? (Choose two.)

A. Limit access to only certain source IP addresses
B. Limit management access to specific users.
C. Limit the number of simultaneous connections.
D. Limit management access to only SSH

Answer: A,C

Explanation:
When using the set rest control configuration command on a Junos device, you have several options to control access to the REST API. Two effective methods include:
Limiting the number of simultaneous connections: This ensures that the REST API is not overwhelmed by too many concurrent requests, which could potentially lead to performance issues or denial of service.
Limiting access to certain source IP addresses: This method restricts API access to specific IP addresses, enhancing security by ensuring that only trusted sources can interact with the REST API.
Option A (Limit management access to only SSH) is unrelated to controlling REST API access specifically.
Option B (Limit management access to specific users) might be relevant in a different context, but it is not directly tied to REST API control via the specific command mentioned.
Supporting Reference:
Juniper Networks REST API Documentation: This documentation explains how to configure and control access to the REST API on Junos devices, including connection limits and IP-based access control.

NEW QUESTION # 49
Which two statements are true about an XML schema document? (Choose two.)

A. It is formatted as an XLT file.
B. lit is formatted as an XSD file.
C. It cannot be examined in the Junos CLI.
D. It is an authoritative source for operational and configuration XML.

Answer: B,D

Explanation:
An XML schema document (XSD) is a key component in defining the structure and constraints of XML data used in various applications, including Junos:
Authoritative Source (C): An XML schema document serves as the authoritative definition of the structure, content, and semantics of XML documents. It ensures that the XML data adheres to specific rules and formats, which is essential for both operational and configuration XML.
XSD Format (D): XML schema documents are typically written in the XSD (XML Schema Definition) format, which provides a formal description of the XML document's structure.
Option A is incorrect because XML schemas are not formatted as XLT files (which are related to XSLT transformations), and Option B is incorrect because XML schemas can indeed be examined in the Junos CLI using appropriate commands.
Reference:
W3C XML Schema Definition Language (XSD) Documentation: Provides comprehensive information on the XSD format.
Juniper Networks Documentation: Discusses the role of XML schemas in managing Junos configurations.

NEW QUESTION # 50
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