COMPUTER FUNDAMENTALS

Detailed explanation-1: -A buffer is a segment of memory or storage in which items are placed while waiting to be transferred from an input device or to an output device. An operating system commonly uses buffers with printed documents.

Detailed explanation-2: -As described at the beginning of the chapter, a communications channel is the transmission media on which data, instructions, or information travel in a communications system. The amount of data, instructions, and information that can travel over a communications channel sometimes is called the bandwidth.

Detailed explanation-3: -A swap file is a space set aside on the hard drive to be used as the virtual memory extension for the computer’s RAM. When the swap file is needed, it is sent back to RAM using a process called page swapping. This system ensures the computer’s OS and applications do not run out of real memory.

Detailed explanation-4: -A buffer is an area in RAM or on the hard drive designated to hold data that is used by different hardware devices or programs that may operate at different speeds. For instance, a keyboard buffer stores characters as they are entered via the keyboard, and a print buffer stores documents that are waiting to be printed.