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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An anti static strap uses a small _____ to make sure you do not become the least path of resistance to the ground?
Answer: D
Correct answer: resistor
The strap's resistor lets accumulated static bleed away slowly while limiting the current that could flow through the wearer if a live conductor were touched.
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If the memory slots have 30 pins then the chip is a?
Answer: B
Correct answer: SIMM
SIMMs come with 30 or 72 pins; DIMMs have 168 or more. So a 30-pin slot is a SIMM slot.
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Laser Jet printer speeds are measured in pages per minute (ppm) what do we use to measure dot-matrix printers?
Answer: D
Correct answer: characters per second
Dot matrix speed is quoted in characters per second, since the head prints one character at a time. Page printers are rated in pages per minute.
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Which values are held in CMOS for the hard drive
Answer: A
Correct answer: size (heads, cylinders, sectors)
CMOS holds the drive's geometry so that the BIOS can address it before any operating system is loaded. Interrupt assignments and free space are not part of it.
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Which of the following would be a logical first step in troubleshooting a PC?
Answer: B
Correct answer: Define the circumstances of the problem
Nothing can be diagnosed until it is known what happens, when, and what changed. Establishing that comes before opening the case or telephoning anyone.
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Which DOS driver is used to emulate expanded memory?
Answer: B
Correct answer: EMM386.exe
EMM386 uses the 386's paging hardware to make extended memory look like expanded memory to programs that expect it. HIMEM.SYS manages extended memory itself and must be loaded first.
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For a Macintosh to print successfully, the System Folder must contain:
Answer: D
Correct answer: A printer driver
The driver translates the application's output into the printer's own language, so nothing can print without it. Fonts and file sharing are unrelated to whether printing works at all.
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Which component must be vacuumed or replaced during preventative maintenance on a laser printer?
Answer: C
Correct answer: Ozone filter
The corona wires produce ozone, and the filter that absorbs it saturates and must be cleaned or replaced. The mirror is cleaned but not vacuumed, and the toner cartridge is simply exchanged.
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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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