Which term refers to a finite set of different characters that is complete for a given purpose, such as the 128 ASCII characters?

• A. character set
• B. data bus
• C. digital data
• D. disk cache

Answer: (A)

A character set is a finite collection of characters designed to cover exactly what you need for a particular context. It defines which symbols can appear and how they are represented in encoding. For example, ASCII is a character set that includes 128 characters—letters, digits, punctuation, and control codes—so text can be represented consistently across systems. The idea of being “complete for a given purpose” means the set has all the characters required for that use.

The other terms describe different things: a data bus is the hardware path that moves data inside a computer; digital data refers to data represented in binary, not a specific collection of symbols; and disk cache is a fast storage area to speed up disk access.