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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What is the best ground for a conductive work bench?
Answer: A
Correct answer: AC outlet
The bench is earthed to the ground pin of a properly wired AC outlet, which is the building's true earth. Grounding to another device or to a chassis only ties two floating points together.
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Typically, how many Type III PC cards can you insert in a laptop?
Answer: A
Correct answer: 1
A Type III card is twice the thickness of a Type II, so it occupies both slots of the usual pair. A laptop with two Type II slots therefore takes one Type III card.
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What is the first thing you could do to check for damage to a printer after receiving it?
Answer: D
Correct answer: Unbox it and examine it for physical damage
Damage in transit is visible, and looking for it costs nothing and risks nothing. Powering up a damaged printer or connecting it to a PC may make matters worse.
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You have a system that periodically locks up. You have ruled out software, and now suspect that it is hardware. What should you do first that could help you narrow it down to the component at fault?
Answer: D
Correct answer: disable the CPU cache in CMOS
Switching the cache off in CMOS is done in seconds and needs no parts. If the lockups stop, the fault is in the cache; if they continue, the cache is cleared and the search moves on.
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What's the best way to protect your hard drive data?
Answer: A
Correct answer: regular backups
Defragmenting and checking the disk keep it healthy but save nothing when it fails. Only a backup preserves the data through a failure, which is what the question asks about.
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On a dot matrix printer, you should never lubricate which part?
Answer: B
Correct answer: printhead pins
The pins fire through a lubricant-free guide and are cooled by airflow; oil on them collects paper dust and jams them. The rails and bearings are the parts that do need lubrication.
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How many devices can be used on a single SCSI bus? Keep in mind that the SCSI host adapter counts as a device.
Answer: B
Correct answer: 8
A narrow SCSI bus has eight IDs, 0 to 7, and the host adapter takes one of them - conventionally 7. So eight devices in total, seven of them peripherals.
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Match the device driver HIMEM.SYS to its operation.
Answer: B
Correct answer: Manages the use of extended memory
HIMEM.SYS is the extended memory manager: it arbitrates access to memory above 1 MB and provides the high memory area. EMM386 is the one that emulates expanded memory.
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_____ help prevent power surges.
Answer: A
Correct answer: Surge suppressor
A surge suppressor clamps voltage spikes coming in on the mains before they reach the equipment. A UPS also supplies power during an outage, which is a different function.
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