Free Practice Questions for Juniper JN0-223 Exam

https://www.juniper.net/documentation/us/en/software/junos/netconf/topics/topic-map/netconf-ssh-connection.html

The IANA-assigned port for NETCONF-over-SSH sessions is 830.

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 Bis 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 References:

RFC 6241 - NETCONF Protocol:This RFC describes the use of XML for encoding NETCONF messages.

NETCONF (Network Configuration Protocol) is a standard protocol defined for managing network devices. NETCONF operates in a layered architecture, which includes the following key layers:

Operations Layer: This layer deals with the actual operations like , , , and others. It receives RPC (Remote Procedure Call) requests from a remote NETCONF client and processes these requests.

Messages Layer: This layer is responsible for encoding the RPCs and sending them over the network. It handles the communication between the NETCONF client and server, ensuring that the RPC messages are correctly formatted (usually in XML) and transmitted.

Statement Bis correct because the Messages layer is responsible for sending RPCs to a remote NETCONF server.

Statement Cis correct because the Operations layer is where the NETCONF server receives and processes the RPCs sent by the client.

Supporting References:

Juniper Networks NETCONF Documentation:Provides a detailed breakdown of the NETCONF protocol layers and their functions.

RFC 6241:The official specification for NETCONF, which describes the layered architecture, including the operations and messages layers.

In Python, to use a package or module, you use theimportstatement. This statement allows you to load a module into your script so that you can use its functions, classes, and variables. For example, if you wanted to use themathmodule, you would writeimport math. This makes all the functions and constants in themathmodule available for use in your program.

Option A (reap), B (dir), and C (input)do not serve the purpose of importing modules.diris used to list the attributes of an object,inputis used to get user input, andreapis not a valid Python command related to importing modules.

Supporting References:

Python Documentation on Imports:The Python documentation provides clear guidelines on how to use theimportstatement to include modules in your Python scripts.

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 incorrectbecause the REST API Explorer is not enabled by default; it must be enabled manually.Option B is incorrectbecause the REST API Explorer returns data in both XML and JSON formats, not just XML.

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.

References: