Input and Output Questions and Answers

Q: A touch screen is another type of

Correct answer: Input DeviceA touch screen reports where it was touched, so data flows into the computer and it is an input device - the same category as the mouse and the keyboard.The confusion arises because it is physically combined with a display, which is an output device. The two functions are separate: the panel senses touch and the screen behind it shows the image. Combining them in one assembly is a packaging decision, not a change of category.

Q: What will be the output of the following C code? #include <stdio.h> int main() { int x = -2; x = x >> 1; printf("%d\n", x); }

Correct answer: -1\( -2 \) in two's complement is ...11111110. Right-shifting a signed negative value is implementation-defined, and every common compiler performs an arithmetic shift, propagating the sign bit into the vacated position.That gives ...11111111, which is \( -1 \). The result is also what integer division would give with truncation towards negative infinity, which is why the arithmetic shift is chosen. A logical shift would bring in a zero at the top and give a large positive number instead.

Q: A Laser printer is a

Correct answer: Non-Impact PrinterA laser printer forms the image electrostatically: a laser writes a charge pattern on a drum, toner adheres to it, and heat fuses the toner to the paper. Nothing strikes the page.Impact printers - dot matrix, daisy wheel, line printers - press a type element against a ribbon and the paper, which is what lets them print through carbon copies and what makes them noisy. The distinction explains both the quiet operation and the inability of a laser printer to produce multi-part forms.

Q: The process in which a file is partitioned into smaller parts and different parts are stored in different disks is called _________

Correct answer: StripingStriping divides a file into blocks and writes consecutive blocks to different disks, so several drives transfer at once and the effective throughput multiplies.The cost is reliability: with the data spread across every disk, the failure of any one of them loses the file, so striping alone - RAID 0 - is less reliable than a single drive. Combining it with mirroring or parity restores redundancy, which is what the higher RAID levels do.

Q: What will be the output of the following C code? #include <stdio.h> void main() { int a = 5, b = -7, c = 0, d; d = ++a && ++b || ++c; printf("\n%d%d%d%d", a, b, c, d); }

Correct answer: 6 -6 0 1Work left to right with the short-circuit rules. ++a makes a 6, which is non-zero and therefore true; ++b makes b −6, also non-zero and true, so the && yields 1.The || then has a true left operand, so it short-circuits: ++c is never evaluated and c stays 0. The result d is 1. The trap is −6, which is true because it is non-zero - truth in C is non-zero, not positive.

Q: Cathode Ray Tube (monitor) receives information as an analog signal through a

Correct answer: Video CardA CRT is driven by an analogue signal, and the video card is what produces it: the frame buffer holds digital pixel values and a digital-to-analogue converter turns them into the varying voltages that control the beam intensity.That conversion is why the classic VGA connector carries analogue signals. Flat panels are digital devices, so DVI, HDMI and DisplayPort omit the conversion and send the pixel values directly - a change of interface following from a change of display technology.

Q: A printer that prints one line at a time and has a predefined set of characters is called _______

Correct answer: DrumA drum printer carries a cylinder engraved with a complete set of characters in a band for every print position. The drum spins continuously and a hammer strikes the paper as the wanted character passes, so a whole line is committed in one revolution.That is what makes it a line printer with a fixed character set: nothing can be printed that is not engraved on the drum, so graphics are impossible. The speed was the attraction, and impact printing let it produce multi-part forms.

Q: Using output devices one can ____

Correct answer: View or print dataOutput devices present results: the monitor displays them and the printer puts them on paper. Entering, storing and scanning are the work of input and storage devices.

Q: The sharpness of an image on a monitor is chiefly determined by its ________.

Correct answer: resolutionResolution is the number of pixels the screen displays, so a higher count packs more detail into the same area. Refresh rate governs how smoothly motion appears and colour depth how many shades can be shown, neither of which is sharpness.

Q: A ___________ bay (or just a bay) is a site where a storage device is installed.

Correct answer: StorageA storage bay, or drive bay, is a standard-sized opening in the system case into which a drive is fitted - a hard disk, a solid state drive or an optical drive.The standardisation is the point: bays come in defined sizes, historically 3.5 and 5.25 inches, so that drives from any manufacturer fit any case. The term describes the space and its mountings rather than any device, which is why it is named for the class of hardware it accommodates.

11.

A touch screen is another type of

A.Input Device
B.System Unit
C.Storage Device
D.Output Device

Answer: A

Correct answer: Input Device

A touch screen reports where it was touched, so data flows into the computer and it is an input device - the same category as the mouse and the keyboard.

The confusion arises because it is physically combined with a display, which is an output device. The two functions are separate: the panel senses touch and the screen behind it shows the image. Combining them in one assembly is a packaging decision, not a change of category.

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12.

What will be the output of the following C code?

#include <stdio.h>
    int main()
    {
        int x = -2;
        x = x >> 1;
        printf("%d\n", x);
    }

A.1
B.-1
C.2 - 1 considering int to be 4 bytes
D.Either -1 or 1

Answer: B

Correct answer: -1

\( -2 \) in two's complement is ...11111110. Right-shifting a signed negative value is implementation-defined, and every common compiler performs an arithmetic shift, propagating the sign bit into the vacated position.

That gives ...11111111, which is \( -1 \). The result is also what integer division would give with truncation towards negative infinity, which is why the arithmetic shift is chosen. A logical shift would bring in a zero at the top and give a large positive number instead.

Discuss in Forum

13.

A Laser printer is a

A.Non-Impact Printer
B.Impact Printer

Answer: A

Correct answer: Non-Impact Printer

A laser printer forms the image electrostatically: a laser writes a charge pattern on a drum, toner adheres to it, and heat fuses the toner to the paper. Nothing strikes the page.

Impact printers - dot matrix, daisy wheel, line printers - press a type element against a ribbon and the paper, which is what lets them print through carbon copies and what makes them noisy. The distinction explains both the quiet operation and the inability of a laser printer to produce multi-part forms.

Discuss in Forum

14.

The process in which a file is partitioned into smaller parts and different parts are stored in different disks is called _________

A.RAID
B.Mirroring
C.Striping
D.RAID classification

Answer: C

Correct answer: Striping

Striping divides a file into blocks and writes consecutive blocks to different disks, so several drives transfer at once and the effective throughput multiplies.

The cost is reliability: with the data spread across every disk, the failure of any one of them loses the file, so striping alone - RAID 0 - is less reliable than a single drive. Combining it with mirroring or parity restores redundancy, which is what the higher RAID levels do.

Discuss in Forum

15.

What will be the output of the following C code?

#include <stdio.h>
    void main()
    {
        int a = 5, b = -7, c = 0, d;
        d = ++a && ++b || ++c;
        printf("\n%d%d%d%d", a, b, c, d);
    }

A.6 -6 0 0
B.6 -5 0 1
C.-6 -6 0 1
D.6 -6 0 1

Answer: D

Correct answer: 6 -6 0 1

Work left to right with the short-circuit rules. ++a makes a 6, which is non-zero and therefore true; ++b makes b −6, also non-zero and true, so the && yields 1.

The || then has a true left operand, so it short-circuits: ++c is never evaluated and c stays 0. The result d is 1. The trap is −6, which is true because it is non-zero - truth in C is non-zero, not positive.

Discuss in Forum

16.

Cathode Ray Tube (monitor) receives information as an analog signal through a

A.Video Camera
B.Electronic Chip
C.Video Card
D.Memory Card

Answer: C

Correct answer: Video Card

A CRT is driven by an analogue signal, and the video card is what produces it: the frame buffer holds digital pixel values and a digital-to-analogue converter turns them into the varying voltages that control the beam intensity.

That conversion is why the classic VGA connector carries analogue signals. Flat panels are digital devices, so DVI, HDMI and DisplayPort omit the conversion and send the pixel values directly - a change of interface following from a change of display technology.

Discuss in Forum

17.

A printer that prints one line at a time and has a predefined set of characters is called _______

A.Laser
B.Drum
C.Inkjet
D.Impact

Answer: B

Correct answer: Drum

A drum printer carries a cylinder engraved with a complete set of characters in a band for every print position. The drum spins continuously and a hammer strikes the paper as the wanted character passes, so a whole line is committed in one revolution.

That is what makes it a line printer with a fixed character set: nothing can be printed that is not engraved on the drum, so graphics are impossible. The speed was the attraction, and impact printing let it produce multi-part forms.

Discuss in Forum

18.

Using output devices one can ____

A.Input data
B.Store data
C.Scan data
D.View or print data

Answer: D

Correct answer: View or print data

Output devices present results: the monitor displays them and the printer puts them on paper. Entering, storing and scanning are the work of input and storage devices.

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19.

The sharpness of an image on a monitor is chiefly determined by its ________.

A.refresh rate
B.resolution
C.colour depth
D.screen size

Answer: C

Correct answer: resolution

Resolution is the number of pixels the screen displays, so a higher count packs more detail into the same area. Refresh rate governs how smoothly motion appears and colour depth how many shades can be shown, neither of which is sharpness.

Discuss in Forum

20.

A ___________ bay (or just a bay) is a site where a storage device is installed.

A.Memory
B.Harddisk
C.Storage
D.CD

Answer: C

Correct answer: Storage

A storage bay, or drive bay, is a standard-sized opening in the system case into which a drive is fitted - a hard disk, a solid state drive or an optical drive.

The standardisation is the point: bays come in defined sizes, historically 3.5 and 5.25 inches, so that drives from any manufacturer fit any case. The term describes the space and its mountings rather than any device, which is why it is named for the class of hardware it accommodates.

Discuss in Forum

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