IT &computer MCQ section 3 MCQ Questions & Answers Detailed Explanation

Answer: (a)

Icons on the screen of a computer are picture commands.

Answer: (c)

A communications satellite works like a relay station: signals transmitted by the ground stations are picked up by the satellite’s receiver antennas, the signals are filtered, their frequency changed and amplified, and then routed via the transmit antennas back down to Earth.

The redirected signals are received by ground stations, also called earth stations and further processed to extract the baseband signals.

Answer: (d)

Transistor technology is the new buzzword in the computer world. Replacing silicon transistors with carbon nanotubes could make any electronic device — smartphones, laptops, tablets and supercomputers — smaller and more powerful using less energy than those built using silicon-based transistors.

Scientists at Stanford University, in September 2013, announced to have built the first functioning computer that used only carbon nanotube transistors.

Answer: (a)

Immediate Payment Service (IMPS) is an instant interbank electronic fund transfer service through mobile phones. The customer should have a sufficient account balance to initiate a fund transfer through this method.

Unlike NEFT and RTGS, the service is available 24×7 throughout the year including bank holidays.

Answer: (c)

MKDIR Ms-DOS command is used to create a subdirectory.

Answer: (a)

Loader is a program that places programs into memory and prepares them for execution.