Multiple choice technology storage

Which SCSI Layer was not defined in SCSI-1

  1. Application Layer

  2. Programming Interface Layer

  3. SCSI Command Layer

  4. SCSI Protocol Layer
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B Correct answer
Explanation

SCSI-1 defined the core architectural layers: Application Layer, Command Layer, and Protocol Layer. The Programming Interface Layer was introduced in later SCSI specifications (SCSI-2 and beyond) to provide a standardized interface between applications and the SCSI device driver. This layer did not exist in the original SCSI-1 standard.

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