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IT Essentials v6 Companion Guide, Sixth Edition by Cisco Networking Academy

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Appendix A. Answers to “Check Your Understanding” Questions

Chapter 1:

1. B.

Explanation: The voltage selector switch sets the correct input voltage to the power supply, depending on the country where the power supply is used.

2. B.

Explanation: FireWire uses the Institute of Electrical and Electronics Engineers (IEEE) 1394 standard and is also known as i.Link. IEEE 1284 is a standard that defines bi-directional parallel communications between computers and other devices. IEEE 1451 is a set of smart transducer interface standards and

3. D.

Explanation: USB 2.0 allows transmission speeds up to 480 Mb/s. USB 1.1 allowed transmission rates of up to 12 Mb/s in full-speed mode and 1.5 Mb/s in low-speed mode. USB 3.0 allows transmission speeds up ...

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