Multiple choice technology operating systems

If a CDB is 12-byte long, what will be its group ID?

  1. 2

  2. 3

  3. 4

  4. 5
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D Correct answer
Explanation

SCSI command lengths are defined by group codes in the command descriptor block opcode. Group 0 commands are 6 bytes, Groups 1 and 2 are 10 bytes, and Group 5 commands are 12 bytes. Therefore, a 12-byte CDB belongs to Group 5. Other groups correspond to different lengths.

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