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

Answer: (c)

Garbage collection involves traversing the entire file system, marking everything that can be accessed. Then, a second pass collects everything that is not marked onto a list of free space.

Garbage collection for a disk-based file system, however, is extremely time-consuming and is thus seldom attempted. Garbage collection is necessary only because of possible cycles in the graph.

Answer: (b)

One of the common forms of representing remote sensing data as the information is in the form of thematic maps, by means of visual or computer classification.

However, thematic maps are not an end in themselves and are only the starting point for a variety of applications to which remote sensing data can be potentially used.

Answer: (b)

The CPU (Central Processing Unit) is commonly referred to as the “brains” of a computer since it carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions. The CPU is also known as the processor or microprocessor.

Answer: (d)

The Pan-India mobile Tele-network was launched in Coimbatore. Dr A. Jayathilak, Chairman, Spices Board India launched the programme at a farmers meet held at Tamil Nadu Agricultural University, Coimbatore.

Around 300 farmers across the state attended the programme where around 6000 farmers have already registered in the Tamil Nadu spices community. The purpose of the scheme is to get in direct touch with the spice farmers of the state who are the core section of the society.

Answer: (d)

ASCII stands for The American Standard Code for Information Interchange, which is a character-encoding scheme originally based on the English alphabet that encodes 128 specified characters -

• the numbers 0-9,
• the letters a-z and A-Z,
• some basic punctuation symbols,
• some control codes that originated with Teletype machines, and
• a blank space - into the 7-bit binary integers.

Answer: (c)

ENIAC was the first electronic general-purpose computer. It was Turing-complete, digital, and capable of being reprogrammed to solve a full range of computing problems.

It was designed to calculate artillery firing tables for the United States Army's Ballistic Research Laboratory.