Roberta's supervisor has asked her to daisy-chain five SCSI devices to her computer.
Which method can she use to accomplish this?
1. Attach each of the devices together by SCSI cable, in any sequence, with termination on the SCSI controller.
2. Attach each of the devices together by SCSI cable, in any sequence, with one end of the SCSI bus terminated.
3. Attach each of the devices together by SCSI cable in a required sequence.
4. >>Attach each of the devices together by SCSI cable, in any sequence, with both ends of the SCSI bus terminated.
Explanation : Roberta can attach each of the SCSI devices together by cable in any sequence, as long as she remembers to put a terminator on both ends of the bus. The other choices will not work because of the lack of proper bus termination.
SCSI buses (a chain of SCSI devices) must always be terminated on both ends, just like many kinds of network cable. Devices can be terminated in one of three ways:
* With a terminator block on the free end of the cable that was not designed for other connectors to plug into.
* With a terminator block plugged into the first unit on the chain. This block has two connections: one for the cable and one to plug into the device.
* With a self-terminating connector built into a device. Many devices can be set to terminate without the use of an external block.
Objective: Personal Computer Components
