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Computer Science

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1191

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Laser Printer Disadvantages

medium
Computer Science

A disadvantage of the laser printer is:

A
It is quieter than an impact printer
B
It is very slow
C
The output is of a lower quality
D
None of these (Expensive)
Explanation and memory cue

Laser printers are generally quieter than impact printers, faster than many other types, and produce high-quality output. Their main disadvantage is that they tend to be more expensive, which is correctly captured by option D.

1192

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Practice MCQ

Computer Science

DPI stands for____:

A
Dots Per Inch
B
Decimal Per Inch
C
Digit Per Inch
D
Data Per Inch
Explanation and memory cue

DPI stands for "Dots Per Inch," which is a measure of spatial printing or video dot density, indicating how many individual dots can be placed in a line within the span of 1 inch.

1193

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Input Devices

easy
Computer Science

Which of the following is NOT an input device?

A
Mouse
B
Plotter
C
Keyboard
D
Scanner
Explanation and memory cue

A plotter is an output device used for printing vector graphics, whereas a mouse, keyboard, and scanner are input devices used to provide data to a computer.

1194

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Serial Vs Parallel

easy
Computer Science

Which type of bus transmits multiple bits of data simultaneously over multiple wires?

A
Serial Bus
B
Parallel Bus
C
Control Bus
D
Address Bus
Explanation and memory cue

A parallel bus transmits multiple bits simultaneously over multiple wires, allowing for faster data transfer compared to a serial bus, which transmits bits sequentially over a single wire or channel.

1195

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Bus Width

easy
Computer Science

A bus with 32 data lines can transport how many bits at a time?

A
8 bits
B
16 bits
C
32 bits
D
0 only
Explanation and memory cue

A bus with 32 data lines can transport 32 bits at a time because each data line carries one bit simultaneously.

1196

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Storage Buses

easy
Computer Science

Which bus is commonly used for connecting storage devices like hard drives?

A
PCIe
B
USB
C
SATA (Serial ATA)
D
Parallel Bus
Explanation and memory cue

SATA (Serial ATA) is the standard bus interface commonly used to connect storage devices such as hard drives and SSDs to the motherboard. PCIe and USB serve different purposes, and Parallel Bus is outdated for this use.

1197

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Control Bus

easy
Computer Science

What is the primary function of the control bus?

A
To transfer data
B
To specify memory locations
C
To transmit control signals from the CPU
D
To store data temporarily
Explanation and memory cue

The control bus is responsible for transmitting control signals from the CPU to other components, coordinating and managing operations. It does not transfer data or specify memory locations, which are functions of the data bus and address bus respectively.

1198

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Address Bus

easy
Computer Science

What does the address bus specify?

A
The type of data being transferred
B
The memory location or device address
C
The control signals for operation
D
The method of data transfer
Explanation and memory cue

The address bus carries the memory location or device address to specify where data should be read from or written to in memory or I/O devices. It does not specify the type of data, control signals, or method of data transfer.

1199

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Serial Vs Parallel Buses

easy
Computer Science

Which bus transmits data one bit at a time over a single wire?

A
Parallel Bus
B
Serial Bus
C
Control Bus
D
Data Bus
Explanation and memory cue

A serial bus transmits data one bit at a time over a single wire, whereas a parallel bus transmits multiple bits simultaneously over multiple wires. Control and data buses have different roles related to control signals and data transfer but do not specifically describe the bit transmission method.

1200

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Graphics Quality

medium
Computer Science

Which printer produces the best quality graphics production?

A
Laser Printer
B
Inkjet Printer
C
Plotter
D
Dot Matrix Printer
Explanation and memory cue

Plotters produce the best quality graphics because they draw images with a pen on paper, allowing for precise and high-resolution output, especially for large-scale graphics. Laser and inkjet printers are good but generally less precise for detailed graphics, while dot matrix printers have much lower quality.