IT &computer MCQ section 3 Practice Questions Answers Test with Solutions & More Shortcuts

Answer: (d)

Impact Printers refer to a class of printers that work by banging a head or needle against an ink ribbon to make a mark on the paper. This includes dot-matrix printers, daisy-wheel printers, and line printers. In contrast, laser and ink-jet printers are nonimpact printers.

Answer: (a)

Ray Tomlinson is credited with developing the first viable e-mail program in 1971 for use on the ARPANET.

Although text messages were occasionally sent over the network, Tomlinson created the first program. it is a method of exchanging digital messages from an author to one or more recipients. Modern email operates across the Internet or other computer networks.

Some early email systems required that the author and the recipient both be online at the same time, in common with instant messaging. Today’s email systems are based on a store-and-forward model.

Answer: (b)

In computer storage, direct access is the ability to obtain data from a storage device by going directly to where it is physically located on the device rather than by having to sequentially look for the data at one physical location after another.

Direct access is also called random access because it allows equally easy and fast access to any randomly selected destination.

Answer: (d)

A computer virus is a computer programme that can replicate itself and spread from one computer to another. The term “virus” is also commonly, but erroneously, used to refer to other types of malware, including but not limited to adware and spyware programs that do not have a reproductive ability.

Malware includes computer viruses, computer worms, Trojan horses, most rootkits, spyware, dishonest adware and other malicious or unwanted software, including true viruses.

Answer: (a)

FORMAT is an MS-DOS external command.