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

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: (a)

Morphing is a special effect in motion pictures and animations that changes (or morphs) one image into another through a seamless transition. Most often it is used to depict one person turning into another through technological means or as part of a fantasy or surreal sequence.

Answer: (b)

WikiLeaks is an international, online, self-described not-for-profit organisation publishing submissions of secret information, news leaks, and classified media from anonymous news sources and whistleblowers.

Its website, launched in 2006 under the Sunshine Press organisation, claimed a database of more than 1.2 million documents within a year of its launch.

Julian Assange, an Australian Internet activist, is generally described as its founder, editor-in-chief, and director. it is based in the USA.

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.