IT &computer MCQ section 4 MCQ Questions & Answers Detailed Explanation

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)

Packet switching is the dividing of messages into packets before they are sent, transmitting each packet individually, and then reassembling them into the original message once all of them have arrived at the intended destination.

Packets are the fundamental unit of information transport on the internet that uses the datagram packet switching method. Most modern Wide Area Network protocols, including TCP/IP, are based on packet-switching technologies.

Answer: (b)

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note taking, a journal and web browsing.

Answer: (d)

In the field of computing, the process of arranging data in a logical sequence is called sorting. It is a procedure that accepts a random sequence of numbers or any other data which can be arranged in a definite logical sequence as input. It arranges data items in a logical sequence-alphabetical, numerical, etc-by record key.