What's the best way to prevent damaging your PC with static electricity?
Answer: D
Correct answer: wear an ESD wrist strap
A wrist strap holds the technician at the same potential as the equipment continuously, so no charge can build up. Touching a ground point works only until the next movement generates a fresh charge.
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On the 16-bit ISA bus, IRQ2 is elevated to which higher level interrupt?
Answer: A
Correct answer: 9
On the 16-bit ISA bus the second interrupt controller is cascaded through IRQ2, so a device requesting IRQ2 is actually serviced as IRQ9. The two are the same line seen from either side.
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What is your first action when windows reports that your hard drive is developing bad sectors?
Answer: D
Correct answer: run scandisk with the "thorough" option
A thorough scan tests the surface, marks the bad sectors so they are not used again, and moves any data out of them. That is done first because it costs nothing and may be all that is needed; replacement follows only if the count keeps growing.
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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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