When installing external SCSI devices, terminators are required on: (Select TWO)

The SCSI host adapter occupies one physical end of the SCSI bus and must be terminated to absorb signals and prevent reflection back onto the bus.

Terminating every device would create multiple impedance mismatches and cause severe signal interference - only the two endpoints of the chain are terminated.

The first device in the chain is not an endpoint of the bus unless it is directly adjacent to the adapter with no devices between them, making this an incorrect general rule.

The last device on the SCSI chain is the opposite physical end of the bus and also requires a terminator to complete the bus and prevent signal degradation.

The parallel port is a completely separate interface unrelated to the SCSI bus and has no role in SCSI termination.