Computer Knowledge Practice Question and Answer

Q:

Integrated circuit is related to which generation of computer?

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  • 1
    first generation
    Correct
    Wrong
  • 2
    second generation
    Correct
    Wrong
  • 3
    third generation
    Correct
    Wrong
  • 4
    fourth generation
    Correct
    Wrong
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Answer : 3. "third generation"
Explanation :

Integrated circuits (ICs) were first introduced during the third generation of computers. The third generation of computers, which emerged in the 1960s, saw the development and widespread use of integrated circuits. These tiny electronic circuits contained multiple transistors, resistors, and capacitors on a single semiconductor chip. The use of integrated circuits significantly reduced the size of computers, increased their processing speed, and improved their reliability, marking a significant advancement in computer technology.

Q:

Plotter is an output device that prints _______ etc. on hard copy.

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  • 1
    chart
    Correct
    Wrong
  • 2
    Graph
    Correct
    Wrong
  • 3
    drawing
    Correct
    Wrong
  • 4
    all of the above
    Correct
    Wrong
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Answer : 4. "all of the above"
Explanation :

A plotter is an output device that prints vector graphics on hard copy. Unlike printers, which are designed for raster graphics and text, plotters are specialized devices used to produce high-quality drawings, diagrams, and other vector-based illustrations. Plotters use pens or other drawing tools to create precise lines and shapes on paper, making them particularly useful for applications that require detailed and accurate graphical output, such as architectural and engineering designs.

Q:

________ is an output device that is used for TV Like displays the output on the screen and it is also called visual display unit.

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  • 1
    Printer
    Correct
    Wrong
  • 2
    monitor
    Correct
    Wrong
  • 3
    Plotter
    Correct
    Wrong
  • 4
    Projector
    Correct
    Wrong
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Answer : 2. "monitor"
Explanation :

An output device that is used for TV-like displays and shows the output on the screen is indeed called a monitor. It is also commonly referred to as a visual display unit (VDU). Monitors and VDUs are used to display visual information from computers and other electronic devices, allowing users to view text, images, videos, and other graphical content. They come in various types, including CRT (Cathode Ray Tube), LCD (Liquid Crystal Display), LED (Light Emitting Diode), and OLED (Organic Light Emitting Diode) monitors.

Q:

What are the monitors that display the output as an adjustment of RGB radiation?

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  • 1
    monochrome monitor
    Correct
    Wrong
  • 2
    color monitor
    Correct
    Wrong
  • 3
    gray-scale monitor
    Correct
    Wrong
  • 4
    flat panel monitor
    Correct
    Wrong
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Answer : 2. "color monitor"
Explanation :

color monitor is a type of display that can adjust and display output by manipulating the Red, Green, and Blue (RGB) radiation. In a color monitor, pixels are made up of red, green, and blue sub-pixels, and by varying the intensity of these colors, a wide range of colors can be displayed on the screen. Adjusting the intensity of RGB radiation allows the monitor to display different colors and shades, providing a full spectrum of colors to the viewer. This technology is commonly used in computer monitors, television screens, and other displays to produce vibrant and accurate color representations.


Q:

The acronym of Reusable Optical Storage is-

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  • 1
    CD
    Correct
    Wrong
  • 2
    CD-RW
    Correct
    Wrong
  • 3
    DVD
    Correct
    Wrong
  • 4
    ROM
    Correct
    Wrong
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Answer : 4. "ROM"
Explanation :

Actually, the correct acronym for Reusable Optical Storage is not ROM. The correct acronym is ROS, which stands for Reusable Optical Storage. ROS refers to a technology that allows optical storage media, such as DVDs and CDs, to be rewritten or reused multiple times for data storage purposes.

Q:

In terms of Computer Networks, what does VPN stands for: 

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  • 1
    vertical personal network
    Correct
    Wrong
  • 2
    Verbal Private News
    Correct
    Wrong
  • 3
    virtual private news
    Correct
    Wrong
  • 4
    virtual Private Network
    Correct
    Wrong
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Answer : 4. "virtual Private Network "
Explanation :

 A Virtual Private Network (VPN) is a technology that allows users to create a secure and encrypted connection to another network over the internet. VPNs are commonly used to ensure privacy and security when browsing the internet, especially when using public Wi-Fi networks. VPNs create a private tunnel for data transmission, protecting users' online activities from surveillance, censorship, and potential cyber threats.

Q:

Built-in memory of computer is-

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  • 1
    ROM
    Correct
    Wrong
  • 2
    PROM
    Correct
    Wrong
  • 3
    EPROM
    Correct
    Wrong
  • 4
    RAM
    Correct
    Wrong
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Answer : 1. "ROM"
Explanation :

The built-in memory of a computer typically refers to RAM (Random Access Memory). RAM is a type of volatile memory that the computer uses to temporarily store data that is actively being used or processed. It provides fast access to the data the computer needs to perform tasks, and its content is erased when the computer is powered off.

Q:

These are types of LCD projectors.

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  • 1
    Flat Panel and Laser
    Correct
    Wrong
  • 2
    Normal and Roof Mounted
    Correct
    Wrong
  • 3
    Mesh Model and Curved
    Correct
    Wrong
  • 4
    none of these
    Correct
    Wrong
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Answer : 3. "Mesh Model and Curved"
Explanation :

1. LCD panel types include normal and roof-mounted.

2. Liquid Crystal Display flats are thinner and lighter making them more useful and easier for users than CRTs. It consumes less power than CRT.

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