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[General] JN0-224 Exam Test - Latest JN0-224 Exam Questions

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【General】 JN0-224 Exam Test - Latest JN0-224 Exam Questions

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Juniper JN0-224 Exam Syllabus Topics:
TopicDetails
Topic 1
  • 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 2
  • NETCONF
  • XML API: This domain focuses on XML syntax, XPath expressions, NETCONF protocol, and XML API functionality for programmatic device configuration and communication.
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
  • Data Serialization: This domain addresses YAML and JSON formats used for structured data representation and exchange in network automation workflows.

Juniper Automation and DevOps, Associate (JNCIA-DevOps) Sample Questions (Q39-Q44):NEW QUESTION # 39
Which process is responsible for JET automation requests?
  • A. jsd
  • B. mgd
  • C. jsrpd
  • D. rpd
Answer: A
Explanation:
The jsd (Junos Script Daemon) process is responsible for handling JET (Junos Extension Toolkit) automation requests. The JET framework allows for more programmable interactions with Junos devices, using APIs to manage and automate network functions. The jsd process handles these API requests, executes the relevant scripts, and interacts with the Junos configuration and operational states accordingly.
JET enables developers to write applications that interact with the Junos OS through APIs, providing a powerful tool for network automation, monitoring, and configuration management. The jsd process ensures that all JET-related operations are processed and executed properly.
Why the Other Options Are Incorrect:
A . jsrpd: This is not a process associated with JET automation requests.
B . mgd: The mgd process is responsible for handling management tasks like CLI commands and configuration changes but is not directly responsible for JET automation requests.
C . rpd: The rpd (Routing Protocol Daemon) manages routing protocols like BGP and OSPF but has no involvement in JET automation.
Reference from Juniper Documentation:
Juniper's documentation on JET and the jsd process outlines how this daemon manages script and API request processing for automation tasks.

NEW QUESTION # 40
Which two statements are correct about the Junos REST API Explorer? (Choose two.)
  • A. The REST API Explorer returns data only in XML format.
  • B. The REST API Explorer supports both GET and POST calls.
  • C. The REST API Explorer is enabled by default on all Junos devices.
  • D. The REST API Explorer supports multiple RPC calls.
Answer: B,D
Explanation:
The Junos REST API Explorer provides an interactive environment to explore and execute REST API calls. The correct statements are:
Supports GET and POST Calls (C): The REST API Explorer allows users to make both GET and POST requests, enabling retrieval and submission of data to the Junos device.
Supports Multiple RPC Calls (D): The REST API Explorer can execute multiple RPC (Remote Procedure Call) commands, allowing a wide range of operations to be performed directly through the interface.
Option A is incorrect because the REST API Explorer is not enabled by default; it must be enabled manually. Option B is incorrect because the REST API Explorer returns data in both XML and JSON formats, not just XML.
Reference:
Junos REST API Explorer Documentation: Provides details on the supported operations and how to use the Explorer for different types of requests.
Juniper Networks Documentation: Covers the setup and usage of the REST API Explorer.

NEW QUESTION # 41
What is the difference between a list and a tuple in Python?
  • A. Lists are immutable objects that use parentheses, and tuples are immutable objects that use square brackets.
  • B. Lists are immutable objects that use square brackets, and tuples are mutable objects that use parentheses.
  • C. Lists are mutable objects that use square brackets, and tuples are immutable objects that use parentheses.
  • D. Lists are mutable objects that use parentheses, and tuples are immutable objects that use square brackets.
Answer: C
Explanation:
In Python, the distinction between lists and tuples is essential for efficient programming:
Lists:
Mutable (B): This means that once a list is created, its elements can be changed, added, or removed. Lists are versatile and commonly used when the data is expected to change.
Square Brackets: Lists are defined using square brackets [].
Example:
my_list = [1, 2, 3]
my_list[0] = 10 # Modifying the first element
Tuples:
Immutable (B): Once a tuple is created, it cannot be altered. Tuples are used when a fixed collection of items is needed, providing more integrity to the data.
Parentheses: Tuples are defined using parentheses ().
Example:
my_tuple = (1, 2, 3)
# my_tuple[0] = 10 # This would raise an error because tuples are immutable Reference:
Python Official Documentation: The Python Language Reference provides detailed information on data types like lists and tuples, including their mutability and syntax.
Automation Scripts: In the context of automation, understanding when to use mutable or immutable data structures can significantly impact script performance and reliability.

NEW QUESTION # 42
Which two programming languages are used for Junos on-box scripting? (Choose two.)
  • A. SLAX
  • B. Ruby
  • C. Perl
  • D. XSLT
Answer: A,D
Explanation:
Junos on-box scripting supports the following programming languages:
SLAX (C): SLAX (Structured Language for XML) is a scripting language designed specifically for Junos devices. It allows for easy manipulation of XML data, making it ideal for creating Junos scripts that interact with device configurations.
XSLT (D): XSLT (Extensible Stylesheet Language Transformations) is another language used for transforming XML documents into other formats. It is commonly used in Junos for transforming XML data into different views or outputs.
Options A (Perl) and B (Ruby) are not used for Junos on-box scripting. While these languages are popular in other contexts, Junos scripting relies heavily on XML-based languages like SLAX and XSLT.
Reference:
Junos XML API and Scripting Guide: Describes the use of SLAX and XSLT for on-box scripting.
Juniper Networks Automation Documentation: Provides examples and best practices for using SLAX and XSLT in Junos scripting.

NEW QUESTION # 43
Which process is responsible for XML automation requests?
  • A. mgd
  • B. jsrpd
  • C. rpd
  • D. jsd
Answer: A
Explanation:
The mgd (Management Daemon) process in Junos is responsible for handling XML automation requests. This daemon manages the configuration and operational commands received via NETCONF, which uses XML for data exchange. The mgd process parses the XML data and applies the necessary configuration or retrieves the requested information.
Option B is correct because mgd is the process that handles XML-based requests in Junos.
Options A (jsrpd), C (rpd), and D (jsd) are incorrect because they are responsible for different functions, such as routing protocols and services, not XML automation.
Supporting Reference:
Juniper Networks Management Daemon (mgd) Documentation: Provides an overview of the responsibilities of the mgd process, including handling XML requests.

NEW QUESTION # 44
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