IT &computer MCQ section 4 Practice Questions Answers Test with Solutions & More Shortcuts

Answer: (d)

A CD-RW (Compact Disc-ReWritable) is a rewritable optical disc. It is readable and writable and re-writable also.

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.

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)

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

Answer: (a)

Passwords are often used to protect objects in the computer system, in the absence of more complete protection schemes. They can be considered a special case of either keys or capabilities. Passwords are the most common approach to authenticating a user identity.