FC0-U71 Tech Concepts and Terminology Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✓

  Unicode/UTF-8

  Why this is correct

  Unicode assigns a unique code point to every character across the world's writing systems, and UTF-8 encodes those code points as variable-length byte sequences. This satisfies the requirement to represent characters from virtually all written languages, unlike single-byte encodings such as ASCII or ISO-8859-1, which cover only limited repertoires.

• ✗

  EBCDIC

  Why it's wrong here

  EBCDIC is an 8-bit encoding tied to IBM mainframe code pages, so its character repertoire is limited and platform-specific. It is tempting because it handles mainframe data interchange correctly, which is why it persists on z/OS systems, but it cannot represent characters from virtually all written languages.

• ✗

  Extended ASCII

  Why it's wrong here

  Extended ASCII remains an 8-bit single-byte scheme, so it covers at most 256 code points and cannot represent most scripts. It is tempting because it extends standard ASCII with accented Latin characters, which suffices for Western European text, but Unicode's multi-byte repertoire is required for virtually all written languages.

• ✗

  ASCII

  Why it's wrong here

  ASCII is a 7-bit encoding defining only 128 code points, covering basic Latin letters, digits and punctuation. It is tempting because it underpins most modern encodings and suffices for English-only files, but it cannot represent the thousands of characters across other writing systems that Unicode provides.