A sound card typically uses which IRQ?
Answer: B
Correct answer: 5
A sound card conventionally takes IRQ5, which is free on most systems because LPT2 is rarely fitted. IRQ6 belongs to the floppy and IRQ1 to the keyboard.
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What does the acronym USB stand for?
Answer: B
Correct answer: Universal Serial Bus
USB is the Universal Serial Bus, introduced in 1996 to replace the profusion of incompatible ports that preceded it - serial, parallel, PS/2 and game ports. Its distinguishing features are hot swapping, so devices can be connected and removed without restarting; plug and play, so drivers are matched automatically; and the ability to supply power as well as data, which is what allows a device to charge from a computer. Up to 127 devices can be attached through hubs. The versions raised speed by large steps: USB 1.1 at 12 Mbps, 2.0 at 480 Mbps, 3.0 at 5 Gbps, and later revisions further still. The connectors are a separate matter from the versions, which is a common confusion. Type-A is the familiar rectangular plug, Type-B the square one on printers, and Type-C the reversible modern connector that can carry USB, DisplayPort and up to 100 watts of power over one cable.
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To install a second IDE drive into a computer, you must:
Answer: A
Correct answer: Set the master-slave jumper to slave on the second drive
Two drives on one IDE cable must be distinguished, and that is done by the jumper on each drive. The BIOS discovers them once the jumpers are right; there is nothing to configure in software first.
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What is the i/o address for com3?
Answer: A
Correct answer: 3e8
COM3 uses I/O address 3E8, sharing IRQ4 with COM1. COM4 uses 2E8 and shares IRQ3 with COM2.
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How many IRQs does a chain of USB devices require?
Answer: A
Correct answer: 1
USB devices hang off a single host controller, and the controller takes one interrupt however many devices are attached. Removing the per-device IRQ was one of the main reasons for USB.
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In addition to I/O port addresses, SCSI adapters also use a range of ROM addresses for their onboard BIOS.
Answer: A
Correct answer: True
A SCSI host adapter carries its own BIOS in ROM, so that the machine can boot from a SCSI disk before any driver is loaded. That ROM occupies a range in the reserved memory area as well as the adapter's I/O ports.
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Devices which are used to receive data from central processing unit are classified as
Answer: D
Correct answer: output devices
Devices that receive data from the processor and present it - monitor, printer, speaker - are output devices. Input devices send data the other way.
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COM1 is typically represented by which of the following?
Answer: B
Correct answer: 9 pin male port
Serial ports on the PC are male, with 9 or 25 pins; the 25-pin female connector is the parallel port. Sex and pin count together identify the port.
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What product is used to clean smudged keys on a keyboard?
Answer: D
Correct answer: All-purpose cleaner
Keys are cleaned with an ordinary all-purpose cleaner on a cloth. Solvents and denatured alcohol attack the plastic and the printed legends, and silicone spray leaves a residue that attracts dirt.
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Your customer tells you the print quality of their dot matrix printer is light then dark. Which of the following could cause the problem.
Answer: B
Correct answer: Improper ribbon advancement
If the ribbon does not advance evenly, some characters are struck through fresh ink and others through a used part of the ribbon, so the print alternates light and dark. Paper thickness and head position would affect the whole page uniformly.
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