IT &computer MCQ section 4 MCQ Questions & Answers Detailed Explanation

Answer: (a)

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.

Answer: (b)

An attribute that uniquely identifies the rows of a table is known as the primary key.

Answer: (d)

Processor chip, Printer and Mouse are hardware while JAVA is software.

Java is a programming language originally developed by James Gosling at Sun Microsystems (which has since merged into Oracle Corporation) and released in 1995 as a core component of Sun Microsystems’ Java platform.

The language derives much of its syntax from C and C++, but it has fewer low-level facilities than either of them.

Answer: (a)

Read-only memory (ROM) is a class of storage medium used in computers and other electronic devices. It is programmed during manufacturing process.

Answer: (c)

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.

Answer: (a)

The period 1953-1964 is generally taken to be the period of second-generation computers.

Sometimes, 1946-1958 is supposed to be the period of first-generation computers. By 1948, the invention of the transistor greatly changed the computer's development.

The transistor replaced the large, cumbersome vacuum tube in televisions, radios and computers. As a result, the size of electronic machinery has been shrinking ever since. From 1955 onwards transistors replaced vacuum tubes in computer designs, giving rise to the "second generation" of computers.

A second generation computer, the IBM 1401, captured about one-third of the world market. IBM installed more than ten thousand 1401s between 1960 and 1964.