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SK0-003 · Question #133

Which of the following must occur when installing SCSI devices into the server?

The correct answer is C. Terminate both ends of the chain. SCSI (Small Computer System Interface) bus technology requires proper electrical termination at both physical ends of the chain to prevent signal reflections and ensure reliable data transmission.

Server hardware installation and management

Question

Which of the following must occur when installing SCSI devices into the server?

Options

  • ATerminate the back end of the chain.
  • BSet the jumper to device ID 0.
  • CTerminate both ends of the chain.
  • DSet the jumper to cable select.

How the community answered

(39 responses)
  • A
    3% (1)
  • B
    3% (1)
  • C
    90% (35)
  • D
    5% (2)

Why each option

SCSI (Small Computer System Interface) bus technology requires proper electrical termination at both physical ends of the chain to prevent signal reflections and ensure reliable data transmission.

ATerminate the back end of the chain.

Terminating only one end of the SCSI chain will still allow signal reflections from the unterminated end, leading to communication issues.

BSet the jumper to device ID 0.

While setting unique device IDs is crucial for SCSI, device ID 0 is often reserved for the host adapter or a boot device, but not a mandatory setting for all devices or the termination requirement.

CTerminate both ends of the chain.Correct

SCSI (Small Computer System Interface) bus technology requires proper termination at each physical end of the bus to ensure signal integrity. Without termination at both ends, electrical signals can reflect back, causing data corruption or communication failures between devices on the chain.

DSet the jumper to cable select.

Cable select is a method for assigning device IDs automatically based on their position on a special cable, not a termination requirement.

Concept tested: SCSI bus termination requirements

Topics

#SCSI#Device termination#Hardware installation

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