DevNet Associate DEVASC 200-901 Official Certification Guide by Adrian Iliesiu (z-lib.org)

A NETCONF server may implement a number of
modules, which is the most common implementation for
the Cisco devices that support NETCONF, or it might
implement only one module that defines all the available
data.

YANG is expressed in XML, meaning that an instance of
a YANG model is an XML document.

YANG defines a set of built-in types and has a
mechanism through which additional types can be
defined. There are more than 20 base types to start with,
including the ones in Table 12-3.

Table 12-3 YANG Built-in Data Types

Data TypeDescription

binary Binary data

bits Set of bits

boolean True or false

decimal64 64-bit signed decimal number

empty No value

enumeration Enumerated strings

int8/16/32/64 Integer

uint8/16/32/64 Unsigned integer

string Unicode string