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

The correct answer is Webcam

Key Points

• A webcam is a digital camera that's connected to a computer. It can capture and stream video and audio in real time. During video-conferencing, a webcam is used to transmit live video of participants, making remote meetings, classes, or gatherings possible by allowing people to see and hear each other over the internet. This is essential for effective communication and collaboration in various online platforms and applications designed for video-conferencing.
• The other options listed are not directly used in video-conferencing:
  • OMR (Optical Mark Recognition) is used for recognizing marks made on paper forms, often in surveys or exams.
  • OCR (Optical Character Recognition) is technology for converting different types of documents, such as scanned paper documents or PDFs, into editable and searchable data.
  • MICR (Magnetic Ink Character Recognition) is mainly used in the banking industry for the processing of cheques, allowing computers to read special characters printed in magnetic ink.

Therefore, among the options, the webcam is the specific input device relevant to video-conferencing.

Analysis:-

MODEM:

• It stands for 'Modulator–Demodulator’.
• It can be defined as a device that modulates signals to encode digital information and demodulates the signal to decode the transmitted information.

Advantages:

• It facilitates short-range wireless connectivity.
• Since telephone lines are used it has high transmission speed.
• It can accept commands from other computers for communication the process is known as Auto-dialing. 
• The MODEM is a network hardware device that converts digital signals into analog signals and analog signals into digital signals.

Disadvantages:

• It makes our system more prone to malware attacks and hackers.
• MODEMs that use dial-up connections need telephone lines to access the internet. If the line is disrupted we won’t be able to access the internet.

Clearly, we can say Malware attack is not an advantage of MODEM.

The Correct Answer is EPF.

Key Points

• EPF(Employee Provident Fund) is not associated with the computer system.
• The Employees' Provident Fund was created on November 15, 1951, when the Employees' Provident Funds Ordinance was passed.
• The Workers' Provident Funds Act of 1952 repealed it. The Workers' Provident Funds Bill (Bill No. 15 of 1952) was introduced in Parliament as a bill to provide for the creation of provident funds for employees in factories and other establishments.
• The Employees' Provident Funds & Miscellaneous Provisions Act, 1952, which encompasses the entire country, is now known as the Employees' Provident Funds & Miscellaneous Provisions Act, 1952.

Additional Information

• Point-to-Point Protocol (PPP)
  • It is a data link layer (layer 2) communication protocol that connects two routers directly without the use of a host or any other networking.
  • It has the ability to authenticate connections, encrypt transmissions, and compress data.
• The File Transfer Protocol (FTP)
  • ​It is a common communication protocol for transferring data files over a computer network from a server to a device.
• Uniform Resource Locator (URL),
  • It is a reference to a web resource that specifies its location on a computer network as well as a mechanism for retrieving it.

The correct answer is SAP.

Key Points

• SMTP, HTTP, and FTP are all protocols used for communication over the internet, whereas SAP is an enterprise resource planning software.
• SMTP (Simple Mail Transfer Protocol) is used for sending emails.
• HTTP (HyperText Transfer Protocol) is used for transferring web pages on the internet.
• FTP (File Transfer Protocol) is used for transferring files between a client and a server on a computer network.
• SAP (Systems, Applications, and Products in Data Processing) is not a protocol but an enterprise resource planning software used by businesses to manage business operations and customer relations.

Additional Information

• SMTP (Simple Mail Transfer Protocol) is a protocol for sending email messages between servers. Most email systems that send mail over the Internet use SMTP to send messages from one server to another.
• HTTP (HyperText Transfer Protocol) is the foundation of any data exchange on the Web and it is a protocol used for transmitting hypertext requests and information on the internet.
• FTP (File Transfer Protocol) is a standard network protocol used to transfer computer files from one host to another host over a TCP-based network, such as the Internet.
• SAP (Systems, Applications, and Products in Data Processing) is a software system that integrates all facets of an operation, including product planning, development, manufacturing, sales, and marketing.

The Correct Answer is CTRL + A.

Key Points

• In a graphical user environment, the keyboard shortcut Ctrl+A is most commonly used to select all text, files, pictures, or other objects. 
• A Control key is a key that is used in computers.
  • Ctrl is a modifier key that performs a special operation when pressed in combination with another key (for example, Ctrl+C), unlike the Shift key, the Control key seldom performs any action when pressed alone.
• Most keyboards have a Control key on or near the bottom left side (in compliance with the international standard ISO/IEC 9995-2), with many also having a Control key on the bottom right.

Additional Information

• The keyboard shortcut Ctrl+K varies depending on the application being used.
  • Ctrl+K, for example, is used to insert a hyperlink in some applications, and Ctrl+K focuses on the search bar in some browsers.
• The shortcut ALT + F5 is used to restore the window.
• The shift key is used to change the direction of the cursor.
  • The shift is a keyboard modifier key that helps you to type capital letters and other "upper" characters. On the left and right sides of the row below the home row, there are typically two shift keys.

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 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 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:

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.

The correct answer is Joint Photographic Experts Group (JPEG).

Key Points

• JPEG stands for Joint Photographic Experts Group.
• JPEG is a standard image format for containing lossy and compressed image data.
• JPEG is a unique compression feature, that allows JPEG files to be used widely on the Internet, Computers, and Mobile Devices.

Additional Information 

• Some important abbreviations used in Computer:
  • BIOS - Basic Input Output System
  • CAD - Computer-Aided Design
  • EDVAC - Electronic Discrete Variable Automatic Computer
  • EPROM - Erasable Programmable Read-Only Memory
  • FORTRAN - FORmula TRANslation
  • GPRS - General Packet Radio Service