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

Answer: (c)

Desktop publishing software (abbreviated DTP) is the creation of printed materials using page layout on a personal computer. When used skillfully, desktop publishing software can produce printed literature with attractive layouts and typographic quality comparable to traditional typography and printing.

Answer: (a)

Primary storage, also known as main storage or memory, is the area in a computer in which data is stored for quick access by the computer’s processor. The terms random access memory (RAM) and memory are often as synonyms for primary or main storage.

Answer: (b)

The polymorphic virus changes each time it is installed to avoid detection by antivirus software. The changes do not affect the virus’ functionality but rather change the virus’ signature.

A virus signature is a pattern that can be used to identify a virus, typically a series of bytes that make up the virus code.

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: (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: (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.