Computer Awareness MCQ Quiz - Objective Question with Answer for Computer Awareness - Download Free PDF

The correct answer is 3.

Key Points

• Pixels (on a computer screen and television screen) are formed by a triplet: red, green, and blue.
• They can be different intensities of these colors in increments of 1 from 0 to 255 (RGB scale), and thus you can get whatever color you want.
• Every subpixel (red, green, and blue) can have different levels of brightness.
• Usually from 0 to 255 (on a computer screen) (8 bits per channel), but many computer screens can show you only 6 bits of color per channel.
• Good professional (for visual professionals) Computer screens can show up to 16 bits per channel (but usually only 10 or 12 bits are directly addressable; the full range is used for calibrating these 10 or 12 bits).
• Mixing the intensities of the three sub-pixels gives you all the possible colors.

The correct answer is Both option 2 and option 3

Key Points

• Both POP3 and IMAP are used to receive messages with Gmail, Yahoo, and Hotmail.
• Post Office Protocol 3 (POP3) is an internet standard protocol used by local email clients to retrieve email from a remote server over a TCP/IP connection. 
• IMAP, which stands for Internet Message Access Protocol, is an Internet standard protocol used by email clients to retrieve messages from a mail server. 

Additional Information 

• The Simple Mail Transfer Protocol (SMTP) is used in computer networking systems to transfer mail from one system to another system. But those emails do not have access permission with it unless it is carrying the access agent with them. 
• The high-level protocols are used in the application layer for managing data transmission and networking. These protocols are FTP, HTTP, SMTP, TELNET and so on.
• Humans interact with the Internet with the help the WWW browsers like Google Chrome, Safari, Mozilla Firefox and so on.

The correct answer is option 4, i.e. ZIP.

Key Points:

The correct option is (3)

Explanation:-

Data processing function of a computer:

• Gathering data
• Processing data into information
• Storing the data or information.
• Classification or separation of data

Key Points

• Data processing is generally, "the collection and manipulation of items of data to produce meaningful information."
• The term Data Processing has also been used to refer to a department within an organization responsible for the operation of data processing applications.
  
   

The sequence of events in processing information, which includes

1. Input
2. Processing
3. Storage and
4. Output

 Additional Information

Data analysis:- Data analysis is the process of systematically applying statistical and/or logical techniques to describe and illustrate, condense and recap, and evaluate data.

A simple example of data analysis is whenever we take any decision in our day-to-day life is by thinking about what happened last time or what will happen by choosing that particular decision.

The correct answer is Second.

Key Points

• Second-generation computers were based on Transistors instead of vacuum tubes.
• 1959-1965 is the period of second-generation computers.

Additional Information

• List of generations of computers:

Concept:

• Downloading: It is a process of transferring files from the webserver(from the internet) to the user's computer.
• In this process, memory is required in the user's computer.
• Only users can access this file.

Explanation:

• Uploading: It is a process of transferring files from the user's computer to the webserver(on the internet).
• In this process, memory is required in the webserver.
• Anyone can access the file using the internet.
• FTP: File Transfer Protocol
• It is a set of rules for transferring data from one system to another on the internet.
• JPEG: Joint Photographic Expert Group.
• It is a graphic file format used for saving images.
• Definition of downloading matches with given sentence therefore option 1 is the correct answer.

Additional Information

•  Different file formats are used known as the computer file extension.

The correct answer is Operating system.

Key Points

• UBUNTU is an example of an operating system.
• The operating system is a collection of programs that controls the overall operations of the computer.
• Operating systems are of two types namely, Open-source operating systems and Closed source operating systems.
• UBUNTU is free and open-source software.
• Operating systems works as an interface between a user and computer hardware components.
• Examples of operating systems are:
  • Linux
  • Unix
  • DOS
  • Windows
  • Ubuntu
  • Embedded operating system
  • OpenBSD
  • Mac OS

Additional Information

• Malware is a file or code that is designed to damage and destroy computers and computer systems.
  • Viruses, worms, Trojan viruses, spyware are the common examples of malware.
• A web browser is an application used to access and view websites.
  • Google Chrome, Mozilla Firefox, Apple Safari are the common examples of web browsers.

The correct answer is Common Business Oriented Language. 

• COBOL stands for Common Business Oriented Language.
  • It is first developed in 1960 by the CODASYL Committee (Conference on Data Systems Languages).
  • It is primarily designed for use in business-oriented applications.

Additional Information

• Some important Abbreviations

The correct answer is Query language.

Key Points

The various generations of computers are listed below:

The correct answer is Integrated circuits.

Key Points

Third Generation (1964-1977):

• This generation was introduced by the development of a small chip consisting of the capacity of the 300 transistors
• These Integrated Circuits (IC)s are popularly known as Chips.
• So it is quite obvious that the size of the computer got further reduced
• Some of the computers developed during this period were IBM-360, ICL-1900, IBM-370, and VAX-750
• Higher-level language such as BASIC (Beginners All-purpose Symbolic Instruction Code) was developed during this period​

Additional Information

The correct answer is F1.

Key Points

1. F1 function key is used for opening help.
2. ​A function key is a key on a computer keyboard to perform certain actions.
3. The function keys are arranged on the top of the computer keyboard numbered across from F1 to F12.
4. The keys are frequently used in combination with other keys such as the CTRL key, the ALT key, and the SHIFT key.
5. The function keys provide some interesting shortcuts for common computer functions that can be useful tools in everyday computing.

Additional InformationSome of the use of function keys:

​The correct answer is Portable Network Graphics.

• Portable Network Graphics is the full form of PNG in the computer image format.

Key Points

• PNG (Portable Network Graphics) PNG (Portable Network Graphics)
• PNG is a format for storing bit-mapped or raster images on the computer.
• PNG is also known as a successor of GIF format images.
• It uses the less compression technique to save images like GIF files but without copyright issues.
• It contains a bitmap of indexed color so it is also called a bit-mapped image.
• Portable Network Graphics Format was developed in early 1995.
• PNG form was created by a team working under Thomas Boutell.
• The main reason behind its development was the limitation of 256 colors only in GIF.
• PNG has a file extension ".png".
• PNG provides low-resolution images that look good and load quickly.
• The amount of transparency can be controlled.
• The format supports interlacing, and it can be developed faster than the GIF format.
• PNG format also supports Gamma correction.
• Images can be saved by using true color.
• It can also be saved by using palette and grayscale formats provided by GIF.

Additional Information 

• JPEG (or JPG) - Joint Photographic Experts Group.
• GIF - Graphics Interchange Format.
• TIFF - Tagged Image File Format.
• BMP - BitMaP.
• SVG - Scalable Vector Graphics
• PSD - Photoshop Document.
• PDF - Portable Document Format.
• EPS - Encapsulated Postscript.
• RAW -Raw Image Formats
• AI - Adobe Illustrator Document.

The correct answer is PARAM 8000.

Key Points

• PARAM 8000 is considered to be the first supercomputer developed in India.
• PARAM is a series of supercomputers developed by C-DAC in Pune.
• PARAM supercomputers developed under the leadership of Vijay P Bhatkar.
• Supercomputers developed by India are EKA, PARAM, Kabru, Blue Gene.
• Pratyush is India's fastest supercomputer.

Additional Information

• SAGA 220 is the supercomputer developed by ISRO in 2011.
• PARAM Yuva II is the fastest in the prestigious PARAM series of Supercomputers built in India.
• SAHASRA T provides service in the fields of aerospace engineering, meteorology predictions, and astrological simulation.
• Seymour Cray is considered the father of the supercomputer.
• CDC 6600 is the world's first supercomputer.

 Important Points

• As of June 2023, the AIRAWAT supercomputer is the fastest supercomputer in India, having been ranked 75th fastest in the world in the TOP500 supercomputer list.

The correct answer is CTRL + N.

Key Points

• Create a new document with Ctrl+N. 

Additional Information

• Basic computer shortcut keys
  • Ctrl + M -- Indent the paragraph.
  • Ctrl + B -- Bold highlighted selection.
  • Ctrl + D -- Font options.
  • Alt + F--File menu options in the current program.
  • Alt + E--Edits options in the current program.
  • F1--Universal help (for any sort of program).
  • Ctrl + A--Selects all text.
  • Ctrl + X--Cuts the selected item.
  • Ctrl + Del--Cut selected item.
  • Ctrl + C--Copy the selected item.
  • Ctrl + Ins-- Copy the selected item.
  • Ctrl + V--Paste the selected item.
  • Shift + Ins -- Paste the selected item.
  • Home -- Takes the user to the beginning of the current line.
  • Ctrl + Home--Go to the beginning of the document.
  • End -- Go to the end of the current line.
  • Ctrl + End -- Go to the end of a document.
  • Shift + Home -- Highlight from the current position to the beginning of the line.
  • Shift + End -- Highlight from the current position to the end of the line.
  • Ctrl + (Left arrow) -- Move one word to the left at a time.
  • Ctrl + (Right arrow) -- Move one word to the right at a time.