All Free Computer Science and IT MCQs with Answers

261. The computer size was very large in__________?

• A. First Generation
• B. Second Generation
• C. Third Generation
• D. Fourth Generation

Explanation: First-generation computers used bulky vacuum tubes and occupied very large rooms. Later generations became smaller through transistors, integrated circuits and microprocessors.

262. Second Generation computers were developed during___________?

• A. 1949 to 1955
• B. 1956 to 1965
• C. 1965 to 1970
• D. 1970 to 1990Company News

Explanation: Second-generation computers, based mainly on transistors, are commonly dated from 1956 to 1965. The first generation used vacuum tubes and ended around 1955.

263. Chief component of first generation computer was__________?

• A. Transistors
• B. Vacuum Tubes and Valves
• C. Integrated Circuits
• D. None of above

Explanation: First-generation computers used vacuum tubes or valves for electronic switching and processing. Transistors appeared in second-generation computers, while integrated circuits belong mainly to the third generation.

264. IBM 1401 is_________?

• A. First Generation Computer
• B. Second Generation Computer
• C. Third Generation Computer
• D. Fourth Generation Computer

Explanation: IBM 1401 was a second-generation computer because it used transistors rather than the vacuum tubes of first-generation machines. It was introduced in the late 1950s.

265. Which of the following is first generation of computer?

• A. EDSAC
• B. IBM-1401
• C. CDC-1604
• D. ICL-2900

Explanation: EDSAC, developed at Cambridge, was an early first-generation computer that used vacuum tubes. IBM-1401 and CDC-1604 were transistor-based second-generation systems.

266. ASCII stands for__________?

• A. American Stable Code for International Interchange
• B. American Standard Case for Institutional Interchange
• C. American Standard Code for Information Interchange
• D. American Standard Code for Interchange Information

Explanation: ASCII means American Standard Code for Information Interchange. It is a character-encoding standard used to represent letters, digits, punctuation and control characters.

267. MIS is designed to provide information needed for effective decision making by?

• A. Consumers
• B. Workers
• C. Foremen
• D. Managers

Explanation: A Management Information System provides summarized, timely information to managers for planning, control and decision-making. Consumers, workers and foremen are not the primary target group in this definition.

268. When did John Napier develop logarithm?

• A. 1416
• B. 1614
• C. 1641
• D. 1804Science

Explanation: John Napier published his logarithms in 1614, making difficult multiplication and division easier through addition and subtraction. The other dates do not match this historical development.

269. __________represents raw facts, where-as__________is data made meaningful?

• A. Information, reporting
• B. Data, information
• C. Information, bits
• D. Records, bytes

Explanation: Data consists of raw facts, such as numbers or observations, while information is data processed into a meaningful form. This distinction is a basic foundation of information systems.

270. Example of non-numeric data is_________?

• A. Employee address
• B. Examination score
• C. Bank balance
• D. All of these

Explanation: An employee address is non-numeric data because it is primarily text. An examination score and bank balance are numerical data, so “all of these” is incorrect.