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

Answer: (a)

The short-term scheduler is also known as the CPU scheduler. Its main objective is to increase system performance in accordance with the chosen set of criteria.

It decides which of the ready, in-memory processes is to be executed after a clock interrupt, an I/O interrupt, an operating system call or another form of signal.

Thus, the short-term scheduler makes scheduling decisions much more frequently than the long-term or mid-term schedulers.

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.

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: (a)

Wetware is a term drawn from the computer-related idea of hardware or software but applied to biological life forms. Here the prefix “wet” is a reference to the water found in living creatures.

Wetware is used to describe the elements equivalent to hardware and software found in a person, namely the central nervous system (CNS) and the human brain.

Answer: (c)

The Compact Disc, or CD for short, is an optical disc used to store digital data. It was originally developed to store and playback sound recordings only, but the format was later adapted for the 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.

Answer: (d)

The kilobyte is a multiple of the unit byte for digital information. It refers to either 1024 (210) bytes or 1000 (103 ) bytes, dependent upon context, in the fields of computer science and information technology.