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| Section | Objectives |
|---|---|
| Data Formats and APIs | - APIs in network automation
|
| Scripting and Programming | - Python for network automation
|
| Automation and DevOps Fundamentals | - Automation concepts
|
| Juniper Automation Tools | - Automation frameworks
|
| Network Operations and Troubleshooting | - Automation troubleshooting
|
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NEW QUESTION # 18
Which two PyEZ object methods are included by default when using a Python context manager? (Choose two.)
Answer: A,C
Explanation:
When using a Python context manager with Junos PyEZ, two key methods are automatically included:
open() and close(): These methods are used to establish and terminate a connection to a Junos device. When you use a context manager (the with statement), open() is called when entering the block, and close() is called when exiting, ensuring the connection is properly managed.
lock() and unlock(): These methods are used to lock the configuration database to prevent other users from making changes while you are working on it. When using a context manager, lock() is called at the start of the block, and unlock() is called at the end, ensuring safe configuration changes.
Supporting Reference:
Junos PyEZ Documentation: The documentation explains how context managers work in PyEZ, including the automatic invocation of open(), close(), lock(), and unlock() methods.
NEW QUESTION # 19
Which two statements are correct about a Python list data type? (Choose two.)
Answer: B,D
Explanation:
Python lists have the following characteristics:
Modifiable Data (A): Lists are mutable, meaning you can change, add, or remove elements after the list has been created.
Sequenced and Indexed (B): Lists maintain the order of their elements and are indexed starting from 0. This means you can access elements by their position in the list.
Option C is incorrect because lists are mutable, allowing modifications. Option D is incorrect because lists are indeed sequenced and indexed, unlike dictionaries.
Reference:
Python Official Documentation: Covers the properties of lists, including mutability and indexing.
Python Data Structures Guide: Explains list operations and how to manipulate them.
NEW QUESTION # 20
Which two statements are valid regarding Junos automation? (Choose two.)
Answer: A,D
Explanation:
In Junos automation, several processes handle API requests, and understanding which process handles what is crucial:
jsd Process:
XML API Calls (A): The jsd process is responsible for handling XML API calls, which are a significant part of Junos automation. XML API allows for structured and standardized communication with Junos devices, enabling automation scripts to query and configure devices.
JET API Requests (C): The jsd process also handles JET (Junos Extension Toolkit) API requests. JET provides a more modern, programmable interface for interacting with Junos OS, and jsd is the process that manages these interactions.
mgd Process (Incorrect Option):
Not for JET API Requests: The mgd process handles general management operations, such as CLI commands and managing the configuration database, but it does not handle JET API requests. That role is fulfilled by jsd.
mod Process (Incorrect Option):
Not for XML API Calls: The mod process deals with managing chassis components and is not involved in handling XML API calls.
Reference:
Juniper Networks JET and XML API Documentation: Describes the roles of jsd in handling both XML and JET API requests.
Junos Automation and DevOps Documentation: Provides insights into how different processes interact with Junos APIs.
NEW QUESTION # 21
Which statement is valid regarding YAML and JSON?
Answer: C
Explanation:
Both YAML and JSON are case-sensitive, meaning that the distinction between uppercase and lowercase characters matters. For example, in JSON or YAML, Key and key would be considered different.
Option D (case-sensitive) is correct because both YAML and JSON treat keys and values with different cases as distinct.
Option A is incorrect because, while JSON does not use indentation, YAML does rely on indentation to define structure. Option B is incorrect because whitespace can be significant in YAML for structure, and Option C is incorrect because JSON does not support comments, while YAML does.
Supporting Reference:
YAML and JSON Documentation: The official specifications for both YAML and JSON emphasize their case sensitivity.
NEW QUESTION # 22
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.)
Answer: A,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 # 23
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