IT &computer MCQ section 5 MCQ Questions & Answers Detailed Explanation

Answer: (d)

System software (or systems software) is computer software or an operating system designed to operate and control the computer hardware and to provide a platform for running application software. The term system software also includes software development tools like a compiler.

Answer: (d)

The period of first-generation computers (1946- 1958) is referred to as the Vacuum Tube Years. The first generation of computers was huge, slow, expensive, and often undependable.

In 1946 Presper Eckert and John Mauchly built the ENIAC electronic computer which used vacuum tubes instead of the mechanical switches of the Mark I. The ENIAC led to other vacuum tube type computers like the EDVAC (Electronic Discrete Variable Automatic Computer) and the UNIVAC I (UNIVersal Automatic Computer).

Answer: (d)

Microencapsulation is one of the several technologies used in Electronic printing. It is widely used in “carbonless” carbon paper and “scratch-and-sniff” cologne and perfume advertisements in magazines.

This technology involves the usage of millions of transparent fluid-filled capsules containing microscopic particles (Chemistry By Steven Zumdahl, Susan Zumdahl, p. 488).

Answer: (b)

A job scheduler, also known as long term scheduler, determines which programs are admitted to the system for processing.

It selects processes from the queue and loads them into memory for execution. Process loads into the memory for CPU scheduling.

Answer: (d)

AltaVista was a web search engine owned by Yahoo!. AltaVista was once one of the most popular search engines but lost its ground due to the rise of Google. In May 2011, Yahoo! shut down the site.

Answer: (c)

Network congestion in data networking and queueing theory is the reduced quality of service that occurs when a network node is carrying more data than it can handle.

Typical effects include queueing delay, packet loss or the blocking of new connections. Congestion occurs when bandwidth is insufficient and network data traffic exceeds capacity.