IT &computer MCQ section 2 MCQ Questions & Answers Detailed Explanation

Answer: (c)

A worm is a process that uses the spawn mechanism to clobber system performance.

The worm spawns copies of itself, using up system resources and perhaps locking out the system used by all other processes. On computer networks, worms are particularly potent, since they may reproduce themselves among systems and thus shut down the entire network.

Such an event occurred in 1988 to UNIX systems on the internet.

Answer: (b)

Electronic mail, most commonly referred to as email, is a method of exchanging digital messages from an author to one or more recipients.

Normally, there could be three types of recipients:

1. the target recipient;
2. a carbon copy (Cc) recipients; and
3. blind carbon copy (Bcc) recipients.

Answer: (b)

Clickjacking is a malicious technique of tricking a Web user into clicking on something different to what the user perceives they are clicking on, thus potentially revealing confidential information or taking control of their computer while clicking on seemingly innocuous web pages. It is a browser security issue that is vulnerable across a variety of browsers and platforms.

A clickjacking takes the form of embedded code or a script that can execute without the user’s knowledge, such as clicking on a button that appears to perform another function. The term “clickjacking” was coined by Jeremiah Grossman and Robert Hansen in 2008.

Answer: (b)

Cloud computing is a type of Internet-based computing that provides shared computer processing resources and data to computers and other devices on demand.

It enables convenient, on-demand network access to a shared pool of networks, servers, storage, applications, and services that can be rapidly provisioned with minimal effort or service provider interaction.

Answer: (c)

Desktop publishing (abbreviated DTP) is the creation of documents using page layout skills on a personal computer. This technology allows individuals, businesses, and other organizations to self-publish a wide range of printed matter.

Answer: (c)

The act of writing new data into register is possible only when the register is an accumulator or instruction register.