Multiple choice technology testing Mainframe files are in _______ format UNICODE Hexadecimal UTF-8 ASCII None of the above Reveal answer Fill a bubble to check yourself E Correct answer Explanation Mainframe files traditionally use EBCDIC encoding, not UNICODE, Hexadecimal, UTF-8, or ASCII. Since EBCDIC isn't listed among options A-D, option E (None of the above) is the correct choice.