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10 Cards in this Set
- Front
- Back
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A serial port receives and sends serial data. What chip translates that serial data into parallel data for the computer to use? A. Parallel translator chip B. Serial translator chip C. COM chip D. UART chip
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D. The UART chip handles the serial to parallel and parallel to serial translation. |
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What integrated circuit device controls USB devices connected to a USB port? A. Host controller D. UART
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A. The host controller controls USB devices plugged into the USB bus via a USB port. |
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What happens to bus speed and power usage when you plug multiple devices into a USB hub? A. The bus speed stays constant, but power usage increases. B. The bus speed increases because each device brings a little burst; power us- age increases. C. The bus speed decreases because all devices share the same total bandwidth; power usage increases. D. The bus speed decreases because all devices share the same total bandwidth; power usage decreases.
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C. The bus speed decreases because all devices share the same total bandwidth; power usage increases. |
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Which port type offers the fastest transfer speed? A. IEEE 1394a D. Hi-Speed USB
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B. SuperSpeed USB easily spanks the competition here. |
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You take a tech call from a user who complains that she gets an error message, “Hub power exceeded,” when she plugs her new thumb drive into her USB keyboard’s external USB port. Worse, the device won’t work. What’s most likely the problem? A. Her USB port is defective. D. She plugged one too many devices into the USB hub.
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D. Just like the error message said, the thumb drive drew too much power for the hub to handle. |
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What is the fastest speed that Hi-Speed USB 2.0 can go? A. 12 Mbps B. 120 Mbps C. 400 Mbps D. 480 Mbps
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D. Hi-speed USB 2.0 has a theoretical maximum of 480 Mbps. |
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USB 1.1 devices can run at two speeds. What are the speeds? A. 1 and 2 Mbps D. 12 and 48 Mbps
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B. USB 1.1 devices can run at either 1.5 Mbps or 12 Mbps. |
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What is the maximum cable length for USB 2.0? A. 1.2 meters D. 5 feet
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C. USB has a maximum cable length of 5 meters. |
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Which of the following mice technologies most needs to be cleaned? A. Ball B. Optical C. Parallel D. Serial
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A. Ball mice get the dirtiest. |
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If you attempt to scan an item and the scanner light assembly does not move, what is most likely the problem? A. The scanner is frozen. D. The scanner light assembly is resetting.
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C. The scanner light assembly is most likely locked. |
