The digital multimeter is set for DC, Ohm and 20k. You will read _____ while measuring a good 2 amp fuse.
Answer: A
Correct answer: 0.00
A good fuse is a piece of wire, so its resistance is effectively zero and the meter reads 0.00 on a 20k range. A blown fuse would read as an open circuit.
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Which device uses a DMA channel?
Answer: C
Correct answer: Sound Card
A sound card moves a continuous stream of samples to and from memory, which is exactly what DMA is for: the transfer proceeds without the processor handling each sample.
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What Does EISA stand for?
Answer: A
Correct answer: Extended Industry Standard Architecture
EISA is the 32-bit extension of the ISA bus, designed by a consortium as an answer to IBM's proprietary MCA, and it accepts ISA cards in its deeper slots.
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The 34-pin connection on an I/O card is for?
Answer: A
Correct answer: Floppy drive
The 34-pin connector is the floppy interface; IDE drives use 40 pins and SCSI 50 or more.
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The ESD wrist strap is designed to protect PC Components or Service Technicians ?
Answer: C
Correct answer: Both
The strap protects the components from the static the technician carries, and the resistor in it protects the technician by limiting the current that could flow to earth through the body.
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A numeric error code check: A 17xx indicates a problem with:
Answer: D
Correct answer: hard drive or controller
In the IBM POST numbering each range belongs to a subsystem, and 17xx is the fixed disk. 1xx is the system board, 2xx memory and 6xx the floppy drive.
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Which Motherboard form factor uses one 20 pin connector
Answer: A
Correct answer: ATX
The ATX board takes a single 20-pin power connector, replacing the two 6-pin P8 and P9 connectors of AT boards that could be fitted the wrong way round.
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After doing a low-level format, what would be the next step in configuring the hard drive in a system?
Answer: A
Correct answer: Format DOS partition
The order is low-level format, partition, then high-level format. The low-level format lays down the tracks and sectors; the DOS format then writes the file system into the partition.
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To test for AC ripple on a PC power supply, you would set the volt/ohm meter for:
Answer: B
Correct answer: AC voltage
Ripple is the alternating component left on a direct current supply, so it is measured on the AC voltage range; the DC range would report only the average and hide it.
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Which would you do first when troubleshooting a faulty monitor?
Answer: A
Correct answer: Check its connections to the computer and power source
Cables and power are checked first because they are the commonest fault, cost nothing to check, and carry no risk. Opening a monitor exposes stored charges of tens of kilovolts and should never be the first step.
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