Data Communication and Computer Networks Q#1: List the properties of a good communication system. Explain any one. Ans: 1. Delivery 2. Accuracy 3. Timelines 4. Jitter Accuracy: The system must deliver the data accurately. Data that has been altered during transmission and left uncorrected is not useful. Q#2: Why OSI model is broken up in layers? Ans: The OSI model is conceptual. It is broken up into layers so a person can visualize network communications and steps a computer takes when it encapsulates data from the application to the medium. Q#3: Explain the purpose of Standard Organization. Ans: Standard Organization develops, coordinates, revises, amends and reissues technical standards. These standards are intended to address the requirements of a group of concerned devices. There are several organizations working on standardization of computing equipment. IEEE, IETF, ITU and ANSI are ...
Short-Answer Question Q#1: Define computer hardware. Ans: Computer Hardware: Computer hardware is a collection of all the physical parts or components of a computer. It includes the computer casing, the CPU or central Processing Unit, computer memory, VGA graphics card, sound card and the motherboard. Q#2: Define Computer Software. Ans: Computer Software: Computer software is a computer program that coordinates all the activities and functions of a computer. It also controls all the operations of the computer hardware. It includes operating system, device drivers, utility programs and language translators. Q#3: What are the basic operations of a computer system? Ans: Basic Operations of a Computer System: A computer is a machine that acts accordin...
Q#1: What is a word processor? Write any three applications of a word processor. Ans: A word processor is software or a device that allows users to create, edit, and print documents. It enables us to write text, store it electronically, display it on a screen, modify it and print it to hardcopy. Applications of word processing software: • Creating, editing, saving and printing documents. • Formatting text, such as font type, bolding, underlining or italicizing. • Inserting elements from other software, such as illustrations or photographs. Q#2: Discuss the Margins and Paper Size options in the Page Setup group. Ans: • Margins: A margin is the area or space between the main content of a page and the page edges. This button is used to change the margins of the entire document or selected section. • Paper Size: The size button is used to choose the size of the paper for current section or entire document. Q#3: Name and describe tw...
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