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

Answer: (a)

The process of reducing the size of a data file is popularly referred to as data compression, although its formal name is source coding. Compression is useful because it helps reduce resources usages, such as data storage space or transmission capacity.

Because compressed data must be decompressed to use, this extra processing imposes computational or other costs through decompression.

Answer: (d)

Computers connected directly to the internet are called “Servers,” while the computers we use are “clients,” because they are not connected directly to the internet, but through an Internet Service Provider.

TCP/IP is the communication protocol for the internet. TCP/IP defines the rule computers must follow to communicate with each other over the internet.

TCP provides a communication service at an intermediate level between an application program and the Internet Protocol (IP).

Answer: (c)

a CD-ROM drive, a device that can read information from a CD-ROM. CD-ROM players can be either internal, or external. There are a number of features that distinguish CD-ROM players, the most important of which is probably their speed or data transfer rate. CD-ROM players are generally classified as single-speed or some multiple of single-speed.

Answer: (a)

I/O is the process of transferring data between a program and an external device. A buffer is a temporary storage location for data while the data is being transferred.

Answer: (a)

The kilobit is a multiple of the unit bit for digital information or computer storage.

The prefix kilo (symbol k) is defined in the International System of Units (SI) as a multiplier of 103 (1 thousand), and therefore, 1 kilobit = 103 bits = 1000bits.

However, computers are binary or base 2, as in ones and zeros. So instead of counting by tens, they count by 2s.

So instead of 1, 10, 100, 1000 it is 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024.