Section 18.4
Review Questions
Protocols

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1. What kinds of things constitute a protocol?

answer...

• the signals that appear on I/O ports
• the format of the data (which character code, etc.)
• when these signals appear (in response to which other signals)
• who issues them

2. What hardware issues need to be addressed by a protocol?

answer...

• the number of pins on the connectors and plugs
• exact shape of connectors
• electrical parameters, such as voltage and current levels
• limiting factors such as the maximum length of the cables

3. What does SCSI stand for?

answer...
Small Computer Systems Interface

4. What is an example of another protocol?

answer...
Apple Desktop Bus, which connected mice, printers and other Macintosh peripherals; there are many others