Multiple choice technology mainframe How many bytes does a S9(7) COMP-3 field occupy ? 7 bytes 6 bytes 5 bytes 4 bytes Reveal answer Fill a bubble to check yourself D Correct answer Explanation A COMP-3 (packed decimal) field stores two digits per byte, with the last half-byte (nibble) reserved for the sign. The formula for size in bytes is (N + 1) / 2 rounded up. For S9(7), (7 + 1) / 2 = 4 bytes.