ISDN stands for:
Answer: B
Correct answer: integrated services digital network
ISDN carries voice and data over the same digital subscriber line, which is what integrated services means.
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Which device should not be plugged into a standard ups?
Answer: B
Correct answer: laser printer
A laser printer's fuser draws a very large current each time it heats, far beyond what a standard UPS is built to supply, and can trip or damage it. Printers are put on the surge-protected outlets instead.
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Which is NOT typically a Field Replaceable Unit?
Answer: C
Correct answer: System chassis
A field replaceable unit is a part that can be swapped out to effect a repair - a board, a supply, a drive. The chassis is the frame everything else is fitted into and is not replaced in service.
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What is the recommended way to fix the registry description for the printer driver
Answer: D
Correct answer: Remove the printer driver and re-install it
Removing the driver through the operating system's own interface clears its registry entries in the proper order and the reinstallation writes them afresh. Editing the registry by hand risks leaving inconsistent entries behind.
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After you service a laser printer, you notice dirty print. Which of the following would correct the problem.
Answer: C
Correct answer: Run several blank pages
Loose toner left inside after servicing is carried out onto the first pages printed. Running a few blank sheets clears it, and costs nothing to try before anything is dismantled again.
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Modems use transmission.
Answer: B
Correct answer: asynchronous
A modem sends each character framed by start and stop bits, with no clock shared between the two ends - that is asynchronous transmission. Synchronous transmission requires a common clock.
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Which common bus specification provides the fastest data transfer rate?
Answer: C
Correct answer: PCI
PCI runs at 33 MHz and 32 bits, giving about 133 MB/s, against the VL bus's dependence on the processor bus and ISA's 8 MHz. It is also processor-independent, which is why it outlasted VL.
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All Operating Systems get their total memory initialized from?
Answer: B
Correct answer: BIOS
The BIOS counts and tests the memory during the power-on self test and records the total, which the operating system then reads rather than working it out again.
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During boot-up, the memory test:
Answer: B
Correct answer: Checks and verifies that contiguous memory is installed
The power-on self test writes and reads back each memory location, confirming that the memory is present, working and addressable in one unbroken range. It is a test, not a display.
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You have a PC with no video. Which of the following is LEAST likely to be causing the problem?
Answer: C
Correct answer: crashed hard drive
No video at all means the machine has failed before it could display anything, which points to memory, the processor or the video card. A dead hard drive would still give a display - with an error message on it.
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