The statement is correct. The Network Configuration Protocol (NETCONF) is fundamentally designed to use the Extensible Markup Language (XML) as its data encoding format. All NETCONF operations, such as , , and their corresponding replies, are encapsulated within XML elements. Configuration data itself is also represented in XML, structured according to a predefined data model (often defined in YANG).

The alternative, "False," is incorrect. The core specification for the NETCONF protocol, IETF RFC 6241, explicitly states in its abstract and throughout the document that it uses an XML-based data encoding for both configuration data and protocol messages. This is a defining characteristic of the protocol.

1. IETF RFC 6241, "Network Configuration Protocol (NETCONF)":

Abstract: "The Network Configuration Protocol (NETCONF) defined in this document provides mechanisms to install, manipulate, and delete the configuration of network devices. It uses an Extensible Markup Language (XML)-based data encoding for the configuration data as well as the protocol messages."

Section 1.1, "Background": "NETCONF uses the Extensible Markup Language (XML) for its data encoding..."

2. Huawei VRP V800R012C10 Configuration Guide - NETCONF:

Section: "NETCONF Overview": This document typically explains that NETCONF is a network management protocol based on XML. It details how NETCONF messages, such as RPC requests and replies, are encoded in XML format, allowing for structured and standardized communication between a network management system (NMS) and network devices.

3. Kurose, J. F., & Ross, K. W. (2017). Computer Networking: A Top-Down Approach (7th ed.). Pearson.

Chapter 9, "Network Management": While not a primary standard, this foundational textbook describes modern network management protocols. It explains that NETCONF was developed by the IETF to overcome the limitations of SNMP and CLI, using XML to provide a programmatic and standardized interface for managing network device configurations.