Which of the following statements is true?
Answer: B
Correct answer: Each SCSI device must have its own ID
Every device on a SCSI bus is addressed by its ID, so two devices sharing one cannot both be reached and the bus misbehaves. Unique IDs are the rule, and the host adapter counts as a device.
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SCSI must be terminated with?
Answer: B
Correct answer: Resistor
A SCSI bus must be terminated at both physical ends by a resistor network, which absorbs the signal and prevents it reflecting back down the cable. Missing or doubled termination is the commonest cause of an unreliable SCSI chain.
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What is the first step in diagnosing a completely dead computer at the client site that was working the day before.
Answer: C
Correct answer: check the AC outlet
A machine that worked yesterday and is now completely dead most often has no power reaching it. The outlet is checked first because it takes seconds, needs no tools and rules out the commonest cause.
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Which monitor would provide the highest level of performance?
Answer: D
Correct answer: SVGA
SVGA is the standard above VGA, supporting higher resolutions and more colours than VGA or CGA, and it is the term these questions use for the highest of the group.
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Which device is on IRQ 6?
Answer: C
Correct answer: Floppy drive
IRQ6 belongs to the floppy disk controller; the keyboard uses IRQ1 and video cards normally use no interrupt at all.
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Which I/O port belongs to LPT2?
Answer: B
Correct answer: 278H
LPT1 uses 378H, LPT2 278H and the monochrome adapter's port 3BCH.
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Suppose that the power lamp in on, but the printer will not print. What can you do to correct the problem?
Answer: A
Correct answer: Make sure the printer is on line
A printer with power but no output is most often simply off line, which takes a moment to check and needs no parts. Replacing a fuse or a ribbon addresses faults whose symptoms are different.
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You were installing an application in Windows 95, and the computer crashes, what do you do?
Answer: D
Correct answer: turn off computer and boot from a floppy disk
A crash during installation may leave the system files half written, so the machine cannot be trusted to shut down or restart cleanly. Booting from known-good removable media is the way to reach the disk and repair it.
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A parity error usually indicates a problem with:
Answer: A
Correct answer: memory
The parity bit is written with each byte and checked on every read, so a mismatch means the stored data has changed. That is a memory fault by definition.
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What is the highest binary number that can be referred to on a three position jumper block?
Answer: D
Correct answer: 1
A three-position block has three pins, so a single jumper can bridge either the first pair or the second - two states, representing 0 and 1. The highest value is therefore 1.
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