TestOut LabSim A+ Certification Practice Exam

What is the purpose of SCSI termination?

1. To enhance data transfer speeds

2. To maintain signal integrity on the SCSI bus

3. To increase device compatibility

4. To reduce hardware costs

The correct answer is: To maintain signal integrity on the SCSI bus

The purpose of SCSI termination is to maintain signal integrity on the SCSI bus. In a SCSI (Small Computer System Interface) environment, multiple devices can be connected on a single bus. Termination is essential because it helps prevent signal reflections that can occur when data signals reach the end of the bus. These reflections can interfere with the communication between devices, leading to data corruption or loss. Proper termination involves placing a resistor at the physical end of the SCSI chain to absorb the signals. This ensures that the signals are not reflected back down the line, thus allowing for reliable communication between all devices connected to the bus. Without appropriate termination, data transfer could become erratic, negatively affecting the overall performance of the SCSI system. The other choices, while they may touch on aspects of SCSI functionality, do not directly pertain to termination's primary role in preserving data integrity. Enhancing data transfer speeds and increasing device compatibility are not the primary objectives of termination, and while reducing hardware costs may be a consideration, it does not capture the fundamental reason for implementing termination in SCSI configurations.