Multiple choice technology mainframe

How is sign stored in Packed Decimal fields?

  1. Sign is stored as a hex value in the last nibble of the storage.

  2. Sign is over punched with the numeric value stored in the last nibble.

  3. Sign is stored in the most significant bit.

  4. None of the above
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A Correct answer
Explanation

In packed decimal (COMP-3) format, each byte contains two decimal digits, except for the last byte. The last byte contains one digit in its first half (nibble) and the sign representation (such as C, D, or F in hex) in its last nibble.

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