Computer Questions Answers for Competitive Exams Set-16
||Computer Questions and Answers for Competitive Exams Set-16||Computer Questions Answers for JOA IT,Computer operator & other exams||important computer related question answer||
1. Who among the following developed World Wide Web (WWW), which gave a new type of information exhibition ?
(A) Bob Cohen
(B) Tim Berners-Lee
(C) Robert Morris Jr.
(D) Michel Derstuses
Explanation:-The World Wide Web (abbreviated as WWW or W3, commonly known as the Web), is a system of interlinked hypertext documents accessed via the Internet. Using concepts from his earlier hypertext systems like ENQUIRE, British engineer, computer scientist and at that time employee of CERN, Sir Tim Berners-Lee, now Director of the World Wide Web Consortium (W3C), wrote a proposal in March 1989 for what would eventually become the World Wide Web.
2. Which among the following is a distinctive feature by which a CD ROM drive is classified in a personal computer ?
(A) Software bundle
(B) Data transfer rate
(C) Memory capacity
(D) Storage period
Explanation:-a CD-ROM drive, a device that can read information from a CD-ROM. CD-ROM players can be either internal, or external. There are a number of features that distinguish CD-ROM players, the most important of which is probably their speed or data transfer rate. CD-ROM players are generally classified as single-speed or some multiple of single-speed.
3. What is ‘Teletext’ ?
(A) Flashing of telephone conversation on TV screen.
(B) Printing the text of the message on the telex machine.
(C) Connecting the local telephone with outstation telephones without STD codes.
(D) Flashing of the text of news and information on the TV screen.
Explanation:-Teletext is a Data broadcasting service in which pre-programmed sequences of frames of data are broadcast cyclically, and a user, equipped with a standard television receiver and a special decoder, selects the desired frames for viewing
4. Processing of a data file to reduce its size for storage on disk is termed :
(A) Amplification
(B) Reduction
(C) Compression
(D) Rarefaction
Explanation:-The process of reducing the size of a data file is popularly referred to as data compression, although its formal name is source coding. Compression is useful because it helps reduce resources usage, such as data storage space or transmission capacity. Because compressed data must be decompressed to use, this extra processing imposes computational or other costs through decompression
5. Which of the following mobile telephone network is not based on GSM technology ?
(A) Idea
(B) BPL Mobile
(C) Airtel
(D) Reliance Infocomm
Explanation:– GSM stands for Global System for Mobile Communications. Just like computers, mobile phones have evolved over time. There were first generation mobile phones in the 70’s, there are 2nd generation mobile phones in the 80’s and 90’s, and now there are 3rd gen phones which are about to enter the Indian market. GSM is called a 2nd generation, or 2G communications technology. Idea, Airtel, and BPL Mobile are based on GSM technology while Reliance Infocommis not based on GSM technology.
6. A compact disc (CD) is a data storage system of the type
(A) magnetic
(B) optical
(C) electrical
(D) electro-mechanical
Explanation:-The Compact Disc, or CD for short, is an optical disc used to store digital data. It was originally developed to store and play back sound recordings only, but the format was later adapted for storage of data (CD-ROM).Standard CDs have a diameter of 120 millimetres (4.7 in) and can hold up to 80 minutes of uncompressed audio or 700 MB (700 × 106 bytes) of data.
7. Who developed the concept ‘World Wide Web’ ?
(A) Tim Berners-Lee
(B) Microsoft
(C) Arthur Clarke
(D) AT & T Bell Lab
Explanation:-The World Wide Web (abbreviated as WWW or W3, commonly known as the Web), is a system of interlinked hypertext documents accessed via the Internet. Using concepts from his earlier hypertext systems like ENQUIRE, British engineer, computer scientist and at that time employee of CERN, Sir Tim Berners-Lee, now Director of the World Wide Web Consortium (W3C), wrote a proposal in March 1989 for what would eventually become the World Wide Web.
8. ‘IC’ in computers stands for
(A) Integrated Charge
(B) Integrated Current
(C) Integrated Circuits
(D) Internal Circuits
Explanation:-IC, or An integrated circuit is a small wafer, usually made of silicon, that can hold anywhere from hundreds to millions of transistors, resistors, and capacitors. These extremely small electronics can perform calculations and store data using either digital or analog technology.
9. WLL stands for
(A) Walking Land Line
(B) Walking Loop Line
(C) Wireless Land Line
(D) Wireless in Local Loop
Explanation:-WLL stands for Wireless in local loop, is a term for the use of a wireless communications link as the “last mile / first mile” connection for delivering plain old telephone service (POTS) and/or broadband Internet to telecommunications customers.
10. A computer virus is
(A) a chemical that attacks silicon.
B) a micro-organism that destroys integrated circuits.
(C) data that the computer fails to handle.
(D) a special kind of computer programme.
Explanation:-A computer virus is a computer programme that can replicate itself and spread from one computer to another. The term “virus” is also commonly, but erroneously, used to refer to other types of malware, including but not limited to adware and spyware programs that do not have a reproductive ability. Malware includes computer viruses, computer worms, Trojan horses, most rootkits, spyware, dishonest adware and other malicious or unwanted software, including true viruses.
