IT &computer MCQ section 6 MCQ Questions & Answers Detailed Explanation

Answer: (c)

An operating system (OS) is a set of programs that manages a computer’s resources, especially the allocation of those resources among other programs. It does so by interacting with the computer’s software and hardware.

Typical resources include the central processing unit (CPU), computer memory, file storage, input/output (I/O) devices, and network connections. It establishes a user interface and executes and provides services for applications software.

Answer: (b)

In computer networking, the term IP spooling refers to reation of Internet Protocol packets with a forged source IP address, called spoofing, with the purpose of concealing the identify of the sender or impersonating another computing system. IP spooling is used to cover up illegal or unethical practises. The secret data are illegally disturbed.

Answer: (b)

‘Booting the System’ means restarting a computer or its operating system software.

Answer: (a)

A dot matrix printer is a printer that uses dots to print letters and even pictures. They can only print one colour.

The advantages of using them are:

• low purchase cost,
• can handle multipart forms,
• cheap to operate,
• just new ribbons,
• rugged and low repair cost and
• the paper is completely connected.

This allows printing long banners that span across several sheets of paper.

Answer: (b)

American Standard Code for Information Interchange (ASCII) is the predominant character set encoding of present-day computers.

ASCII codes represent text in computers, telecommunications equipment, and other devices.

Most modern character encoding schemes are based on ASCII, although they support many additional characters.

Answer: (c)

Interleaving is commonly used in pipelined processors to increase the memory bandwidth beyond the bandwidth of a single memory module (or bank).

The performance of interleaved memory systems depends on the number of banks, the bank cycle time, the number of processors and the pattern of requests generated.

The design of such systems involves a number of trade-offs which are dominated by the nature of interrelationships between these factors.