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[General] Actual Juniper JN0-224 Exam Question For Quick Success

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【General】 Actual Juniper JN0-224 Exam Question For Quick Success

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Juniper JN0-224 Exam Syllabus Topics:
TopicDetails
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
  • 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 4
  • NETCONF
  • XML API: This domain focuses on XML syntax, XPath expressions, NETCONF protocol, and XML API functionality for programmatic device configuration and communication.
Topic 5
  • Rest API: This domain covers Junos REST API implementation, REST API Explorer tool, and cURL usage for HTTP-based device management and configuration.

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Juniper Automation and DevOps, Associate (JNCIA-DevOps) Sample Questions (Q48-Q53):NEW QUESTION # 48
Which two statements are correct about the Junos REST API Explorer? (Choose two.)
  • A. The REST API Explorer supports multiple RPC calls.
  • B. The REST API Explorer returns data only in XML format.
  • C. The REST API Explorer is enabled by default on all Junos devices.
  • D. The REST API Explorer supports both GET and POST calls.
Answer: A,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 # 49
You must use Junos PyEZ to configure unique IP addresses on individual machines.
Which two features will permit this requirement? (Choose). Ian SCP module
  • A. an SCP module
  • B. a BSON data file
  • C. a YAML data file
  • D. a Jinja2 template
Answer: C,D
Explanation:
To configure unique IP addresses on individual machines using Junos PyEZ, you can use the following features:
YAML Data File (C): YAML files are used to store configuration data in a human-readable format. They are often used in combination with Jinja2 templates to provide the data necessary for template rendering.
Jinja2 Template (D): Jinja2 is a templating engine for Python that allows you to create dynamic templates. When used with Junos PyEZ, a Jinja2 template can be filled with data (such as IP addresses from a YAML file) to generate configuration snippets that are applied to different devices.
Options A (SCP module) and B (BSON data file) are not typically used with Junos PyEZ for this purpose.
Reference:
Junos PyEZ Documentation: Discusses the use of YAML files and Jinja2 templates for generating configurations.
Jinja2 Templating Documentation: Provides details on how to create and use templates in Python scripts.

NEW QUESTION # 50
Which two statements about Junos automation are correct? (Choose two.)
  • A. The Junos REST API client is on-box.
  • B. The Junos REST API client is off-box.
  • C. Junos automation does not allow for device provisioning throuqh the console port.
  • D. Junos automation allows for device provisioning through the console port.
Answer: A,D
Explanation:
A). The Junos REST API client is on-box:
The Junos REST API is on-box, meaning it is hosted directly on the Junos OS device. This allows you to interact with the device through RESTful API calls without needing an external client to act as an intermediary. With the on-box REST API, users can manage and automate configuration and operational tasks directly from the Junos device itself using HTTP/HTTPS protocols. This simplifies automation and remote management since the API server is embedded within the device.
Key Automation Capabilities of On-box REST API:
Supports configuration, monitoring, and operational commands.
Allows for direct device interaction via tools like curl, or through custom-built automation scripts.
Reference:
C . Junos automation allows for device provisioning through the console port:
Junos automation does indeed allow for device provisioning through the console port, especially in the context of Zero Touch Provisioning (ZTP). When network interfaces are not initially configured, or when remote access is not possible, devices can be provisioned via the console port. This method is commonly used during the initial setup process, enabling administrators to deploy configurations even without network access. ZTP automates initial configurations, including system setup and software installation, which can be triggered via the console.
Key Advantages of Console-based Provisioning:
Useful in environments where network interfaces are unavailable or not yet configured.
Essential for the initial bootstrapping of devices in remote locations.
Why the Other Options Are Incorrect:
B . Junos automation does not allow for device provisioning through the console port: This statement is incorrect because Junos automation does allow for provisioning via the console port, particularly during initial device setups.
D . The Junos REST API client is off-box: This is incorrect because the REST API client can be directly on the Junos device, providing local API functionality (on-box).
Juniper Automation in DevOps Context: Junos automation, especially with on-box REST API and console-based provisioning, enhances the flexibility and accessibility of device management in DevOps environments. These capabilities simplify remote configuration, monitoring, and device setup even in cases where direct network access is unavailable.

NEW QUESTION # 51
Which two statements about NETCONF are true? (Choose two.)
  • A. It uses the messages layer to lock the configuration of a Junos device.
  • B. It uses the messages layer to commit the configuration of a Junos device.
  • C. It uses the operations layer to commit the configuration of a Junos device.
  • D. It uses the operations layer to lock the configuration of a Junos device.
Answer: C,D
Explanation:
NETCONF (Network Configuration Protocol) operates through different layers, with the operations layer being particularly important for managing configurations:
Operations Layer (A & D): This layer is responsible for actions like locking and committing the configuration on a Junos device. The lock operation prevents other sessions from modifying the configuration, and the commit operation applies the configuration changes to the device.
Options B and C are incorrect because the messages layer handles the communication aspects, such as exchanging data between the client and server, not performing configuration operations like locking and committing.
Reference:
IETF RFC 6241 (NETCONF): Describes the protocol layers and their functions, with a focus on the operations layer.
Juniper Networks NETCONF Documentation: Provides insights into how NETCONF operations are managed in Junos

NEW QUESTION # 52
You are asked to write an on-box script that will be triggered when a specific interface on a Junos device goes down.
Which type of on-box script should you use to accomplish this task?
  • A. operation
  • B. SNMP
  • C. event
  • D. commit
Answer: C
Explanation:
An event script is used to automate responses to system events in Junos, such as an interface going down. These scripts are triggered automatically when a specified event occurs, making them suitable for tasks like monitoring interface status and executing actions when the status changes.
Option B (event) is correct because event scripts are designed for reacting to system events like an interface going down.
Option A (commit) is used for configuration changes, Option C (operation) is used for operational tasks, and Option D (SNMP) is not applicable in this context.
Supporting Reference:
Juniper Networks Event Scripts Documentation: Details how event scripts are used to automate responses to specific system events in Junos

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