191.
What is the i/o address for com1?
Answer: D
Correct answer: 3f8
The standard serial addresses are COM1 at 3F8, COM2 at 2F8, COM3 at 3E8 and COM4 at 2E8.
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Computer Hardware and Software Questions and Answers
192.
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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193.
When connecting a ribbon cable to a connector, how do you know which direction to plug it in?
Answer: B
Correct answer: The colored line in the cable goes to pin #1
The stripe along one edge of a ribbon cable marks the conductor carrying pin 1, and pin 1 on the board is marked with a square pad, a dot or a number. Aligning the two is the whole of the rule.
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194.
The standard VGA display has _____ pixels in its native graphics mode?
Answer: B
Correct answer: 640 x 480
Standard VGA graphics is 640 by 480 pixels in 16 colours. The higher resolutions belong to SVGA and its successors.
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195.
The ATAPI compliance is stands for?
Answer: C
Correct answer: Mass storage device
ATAPI - the AT Attachment Packet Interface - extends IDE beyond hard disks to other mass storage devices such as CD-ROM and tape drives, by carrying SCSI-style command packets over the IDE cable.
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196.
Which REQUIRES an anti-static bag for transport?
Answer: D
Correct answer: I/O controller
An I/O controller is a bare circuit board dense with semiconductors, and static discharge is exactly what damages those. A monitor, a power supply and floppy disks are all far more robust.
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197.
An IRQ allow interface cards to:
Answer: A
Correct answer: Interrupt the CPU to request service
An interrupt request line lets a card signal that it needs attention, so the processor can attend to it when it is ready instead of polling. Data itself travels over the bus, not over the IRQ line.
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198.
Computer which can perform quadrillion instruction per second is termed as
Answer: A
Correct answer: Supercomputer
A machine measured in quadrillions of operations per second - petaflops - is a supercomputer. A PLC is an industrial controller and a personal computer is several orders of magnitude slower.
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199.
What expansion types do most pll/plll motherboards support?
Answer: C
Correct answer: ISA, PCI, AGP
Pentium II and III boards carry ISA for legacy cards, PCI for general expansion and a single AGP slot for the graphics card. MCA and VESA local bus belong to earlier generations.
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200.
During the fusing process, toner is:
Answer: D
Correct answer: melted into the paper
The fuser applies heat and pressure, so the toner is melted into the fibres of the paper and bonds as it cools. Before fusing the toner is held only electrostatically and rubs off.
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