Multiple choice technology storage

A SCSI Device has disconnected from SCSI bus, because it is seeking some data for I/O request. Now it wants to access the SCSI bus again. Which phase the bus is in:

  1. Bus Free

  2. Selection

  3. Message In

  4. Reselection
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D Correct answer
Explanation

When a previously disconnected Target device needs to regain control of the SCSI bus to complete an I/O operation, it enters the Reselection phase. The device reconnects to the Initiator to continue the pending transaction. Bus Free is when no device owns the bus, Selection is when an Initiator chooses a Target, and Message In is a phase for status/message transfer - none of these apply to a device reconnecting after disconnection.

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