IT &computer MCQ section 1 MCQ Questions & Answers Detailed Explanation

Answer: (a)

Microwaves are radio waves, while the rest three are some form of cables.

Coaxial cable: a kind of copper cable used between the community antenna and user homes and businesses;

Optical fiber: a flexible, transparent fibre made of glass or plastic; and

Twisted pair cable: a type of wiring in which two conductors of a single circuit are twisted together for the purposes of cancelling out electromagnetic interference (EMI) from external sources.

Answer: (a)

The number of bits that a computer can process at a time in parallel is called its word length.

The commonly used word lengths are: 8, 16, 32 or 64 bits. It is a measure of the computer power of a computer.

For example, when we talk of a 32-bit computer, it means that its word length is 32 bits.

Answer: (a)

In C language, the formatting character should be preceded by the symbol %.

Answer: (b)

The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits. Historically, a byte was the number of bits used to encode a single character of text in a computer.

Answer: (a)

The UNIVAC I (Universal Automatic Computer I) was the first commercial computer produced in the United States. It was designed principally by J. Presper Eckert and John Mauchly, the inventors of the ENIAC.

It was the first computer designed for business and administrative use with fast execution of relatively simple arithmetic and data transport operations, as opposed to the complex numerical calculations required of scientific computers.

Answer: (b)

Charles Babbage, was an English mathematician, philosopher, inventor and mechanical engineer who originated the concept of a programmable computer. Considered as “father of the computer”, Babbage is credited with inventing the first mechanical computer that eventually led to more complex designs.