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CompTIA Server+

Category - Server

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Which of the following is a prime difference between Wide SCSI and Fast SCSI?
  1. Wide SCSI can transfer data at up to 10 MBps, whereas Fast SCSI can transfer data at up to 20 MBps.
  2. Wide SCSI has a bus width of 16 bits, whereas Fast SCSI has a bus width of 8 bits.
  3. Wide SCSI has a bus width of 64 bits, whereas Fast SCSI has a bus width of 256 bits.
  4. Wide SCSI has a bus width of 64 bits, whereas Fast SCSI has a bus width of 16 bits.
Explanation
Answer - B - Wide SCSI has a bus width of 16 bits, whereas Fast SCSI has a bus width of 8 bits.

Key Takeaway: Wide SCSI has a data bus width of 16 bits and has a maximum cable length of 20 feet. It supports up to sixteen devices and has a bus speed of 5 MHz, along with a maximum transmission speed of 10 MBps. Fast SCSI has a data bus width of 8 bits and has a maximum cable length of 10 feet. It supports up to eight devices and has a bus speed of 10 MHz, along with a maximum transmission speed of 10 MBps (1 byte × 10 MHz = 10 MBps). Wide SCSI has a bus speed of 5 MHz while Fast SCSI has a bus speed of 10 MHz.
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