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

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.

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: (e)

Syntax errors or diagnostic errors are identified by the compiler. These errors occur when a program does not conform to the grammar of a programming language, and the compiler cannot compile the source file.

A syntax error is an error in the syntax of a sequence of characters or tokens that are intended to be written in a particular programming language.

Common syntax errors include missing or misplaced; or }, the missing return type for a procedure, missing or duplicate variable declaration, type mismatch on assignment, type mismatch between actual and formal parameters, etc.

Logic errors occur when a program does not do what the programmer expects it to do.

Since these errors are due to wrong logic in the program, logic errors cannot be identified by the compiler; they are detected only when the program is executed.

Answer: (b)

Cache memory is a very high-speed semiconductor memory that can speed up the processor or CPU. It acts as a buffer between the CPU and main memory (RAM).

It is used to hold those parts of data and programs which are most frequently used by the CPU. The parts of data and programs are transferred from disk to cache memory by the operating system, from where the CPU can access them.