IT &computer MCQ section 4 Practice Questions Answers Test with Solutions & More Shortcuts

Answer: (d)

Turn off, Log off and Shut Down are commands used to switch off the computer.

Answer: (c)

ROM stands for Read-Only Memory. It is a type of computer memory on which data has been prerecorded. Once data has been written onto a ROM chip, it cannot be removed and can only be read.

Unlike main memory (RAM), ROM retains its contents even when the computer is turned off. ROM is referred to as nonvolatile, whereas RAM is volatile.

Answer: (b)

In multitasking computer operating systems, a daemon is a computer program that runs as a background process, rather than being under the direct control of an interactive user.

Systems often start daemons at boot time and serve the function of responding to network requests, hardware activity, or other programs by performing some task.

Answer: (a)

Trojan Horse is a hallow wooden horse.

Answer: (b)

The byte is a unit of digital information that most commonly consists of eight bits. Computer storage is usually measured in byte multiples. For example, an 820 MB hard drive holds a nominal 820 million bytes - or megabytes - of data.