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

Answer: (a)

The modem is an external device or internal electronic circuitry used to transmit and receive digital data over a communications line normally used for analogue signals. A modem attached to a computer converts digital data to an analogue signal that it uses to modulate a carrier frequency.

This frequency is transmitted over a line, frequently as an audio signal over a telecommunications line, to another modem that converts it back into a copy of the original data.

Answer: (a)

After a virus worm enters a computer system, the operating system (OS) creates a single thread for the worm’s execution. Next, the worm spawns or creates another process that is an exact duplicate of the original process. In other words, the worm makes an exact duplicate of itself within the computer’s memory.

The worm continues to duplicate itself each time the OS manages the worm’s process till it paralyzes the OS completely and forces it to shut down.

Answer: (c)

Secondary storage, sometimes called auxiliary storage, is all data storage that is not currently in a computer's primary storage or memory.

In a personal computer, secondary storage typically consists of storage on the hard disk and on any removable media, if present, such as a CD or DVD, flash memory, floppy disks, magnetic tape, paper tape, punched cards, standalone RAM disks, and Iomega Zip drives.

Answer: (b)

Net neutrality is the principle that Internet service providers and governments should treat all data on the Internet the same, not discriminating or charging differentially by user, content, website, platform, application, type of attached equipment, or mode of communication.

The term was coined by Columbia University media law professor Tim Wu in 2003.

Answer: (b)

Line Printer: prints a whole line of characters at a time; Daisy Wheel Printer and Dot-Matrix printer: print one character at a time; and Laser printer: prints one page at a time.

A daisy wheel printer is an example of a character printer that prints one complete character at a time.

Answer: (d)

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