Q. A GUID is a 128-bit (16 byte) number used by software programs to uniquely identify the location of a data object. What is correct full form? 
Answer: Globally Unique Identifier
Notes: The correct full form of GUID is "Globally Unique Identifier." A GUID is a 128-bit number used in software development to ensure that each identifier is unique across different systems and contexts. This uniqueness is crucial for database management, software development, and distributed systems. GUIDs are often represented in hexadecimal format and are widely used in applications like Microsoft Windows and databases to avoid conflicts in object identification.