Which mechanism in XML allows organizations to specify globally unique names…

Answer: XML namespaces allow organizations to specify globally unique names for elements and attributes by qualifying names with a URI.

• Namespaces prevent name collisions by qualifying names with a namespace identifier (a URI) and an optional prefix.

• Namespaces are declared using xmlns or xmlns:prefix="URI" on an element.

• Elements and attributes are then written using prefix:localName (or belong to the default namespace if declared without a prefix).

Example: <root xmlns:ex="http://example.com/ns"> <ex:item>Value</ex:item> </root>

Note: The namespace URI is an identifier used to distinguish names; it does not have to point to a retrievable resource.