IT &computer MCQ section 1 Practice Questions Answers Test with Solutions & More Shortcuts

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.

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: (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: (a)

A moderator is a medium that reduces the speed of fast neutrons, thereby turning them into thermal neutrons capable of sustaining a nuclear chain reaction involving uranium-235.

Commonly used moderators include regular (light) water (roughly 75% of the world's reactors), solid graphite (20% of reactors) and heavy water (5% of reactors).

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.