XML

1. Definition: eXtensible Markup Language
   1. Standardized in 1998
   2. Widely used across the internet
   3. Originally developed as a markup language (e.g., used to format text), like HTML
2. XML is now used as a general data serialization language
   1. white space is insignificant
   2. Uses object tags like <key>value</key>
   3. Often used in REST APIs, same as JSON

XML Sample

<IPInterfaces>
	<entry>
		<Interface><FastEthernet0/0</Interface>
		<IP-Address>192.168.1.1</IP-Address>
		<Status>up</Status>
		<Protocol>up</Protocol>
	</entry>
</IPInterfaces>

Metadata

OSI or TCP/IP Layer

CCNA Exam Topic

Contributors

Sources