Answers to the Assessment Test

1. B. “PS/2” can refer to both a hardware interface and a software protocol, but used in the context of the Protocol option, it unambiguously refers to the software protocol. Thus, option B is correct. Option A might be correct, but the specified line is insufficient evidence of that; USB mice generally use the PS/2 protocol or a variant of it, such as the Intellimouse PS/2 protocol. Although the PS/2 hardware port and protocol originated with the IBM PS/2 computer mentioned in option C, many other computers now use them. Mice that use the PS/2 protocol may be used with just about any OS, not just IBM’s OS/2, so option D is incorrect. A slash (/) is valid as part of the PS/2 protocol name, so option E is incorrect. ...

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