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Reliable JN0-224 Exam Sample - JN0-224 Valid Test Notes

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Reliable JN0-224 Exam Sample - JN0-224 Valid Test Notes

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Juniper JN0-224 Exam Syllabus Topics:
TopicDetails
Topic 1
  • 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 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
  • Data Serialization: This domain addresses YAML and JSON formats used for structured data representation and exchange in network automation workflows.
Topic 4
  • Rest API: This domain covers Junos REST API implementation, REST API Explorer tool, and cURL usage for HTTP-based device management and configuration.
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.

Juniper Automation and DevOps, Associate (JNCIA-DevOps) Sample Questions (Q30-Q35):NEW QUESTION # 30
Which statement about the NETCONF content layer is true?
  • A. It uses HTML for RPC request and response payloads.
  • B. It uses XML for RPC request and response payloads.
  • C. It uses YAML for RPC request and response payloads.
  • D. It uses JSON for RPC request and response payloads.
Answer: B
Explanation:
The NETCONF protocol, used for network management, utilizes XML for encoding the RPC (Remote Procedure Call) requests and responses. XML is chosen because of its flexibility and ability to represent hierarchical data structures, making it well-suited for representing network configurations and states.
Option B is correct because XML is the standard format used for NETCONF RPC payloads.
Options A (YAML), C (JSON), and D (HTML) are incorrect because these formats are not used by NETCONF for its RPC payloads.
Supporting Reference:
RFC 6241 - NETCONF Protocol: This RFC describes the use of XML for encoding NETCONF messages.

NEW QUESTION # 31
Which type of on-box automation script is designed to run every time a user executes a configuration change?
  • A. operation
  • B. event
  • C. SNMP
  • 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 # 32
Which statement about the NETCONF content layer is true?
  • A. It uses HTML for RPC request and response payloads.
  • B. It uses XML for RPC request and response payloads.
  • C. It uses YAML for RPC request and response payloads.
  • D. It uses JSON for RPC request and response payloads.
Answer: B

NEW QUESTION # 33
Which two tools would you use to make REST API requests? (Choose two.)
  • A. NETCOfJF
  • B. cURL
  • C. SSH
  • D. Web browser
Answer: B,D
Explanation:
REST API requests can be made using various tools that support HTTP methods. Two common tools are:
cURL: A command-line tool that allows you to send HTTP requests, including GET, POST, PUT, and DELETE. It is widely used for testing and interacting with RESTful APIs due to its simplicity and flexibility.
Web Browser: Modern web browsers can be used to send HTTP GET requests directly by entering the URL into the address bar. Additionally, browser extensions like Postman or built-in developer tools can be used to construct and send more complex REST API requests.
Option B (NETCOfJF) is incorrect as it does not refer to a standard tool for making REST API requests.
Option D (SSH) is incorrect because SSH is a protocol used for secure remote login and command execution, not for sending REST API requests.
Supporting Reference:
cURL Documentation: Official cURL documentation provides extensive information on how to use cURL to interact with REST APIs.
Web Development and REST API Guides: Many web development resources and REST API documentation recommend using web browsers and tools like cURL for testing and interacting with APIs.

NEW QUESTION # 34
Which two processes are used by Junos automation? (Choose two.)
  • A. kmd
  • B. mod
  • C. jsd
  • D. ifd
Answer: A,C
Explanation:
Junos automation relies on several key processes to handle various automation and API interactions. Let's break down the two key processes involved:
jsd (Junos Script Daemon):
The jsd process is responsible for handling automation scripts, including Python and SLAX scripts, as well as handling JET (Junos Extension Toolkit) API requests. This process is fundamental in the automation framework of Junos, as it deals with external and internal API requests, ensuring that the necessary scripts are executed when specific triggers or events occur.
kmd (Key Management Daemon):
The kmd process is involved in key management for IPsec and other security services. While its primary function is related to managing cryptographic keys, it plays a role in Junos automation by enabling secure communication and ensuring that automation tasks involving security services (such as automated IPsec tunnel creation) are handled securely.
Why the Other Options Are Incorrect:
A . mod: This process doesn't exist as part of the Junos automation framework. It's likely a distractor.
C . ifd: The ifd process is associated with the physical interfaces on the device and does not play a role in automation or script processing.
Reference from Juniper Documentation:
Junos Automation Processes

NEW QUESTION # 35
......
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