Provides a general idea of what we will see in the rest of the book. Four major concepts are discussed: data communications, networking, protocols and standards, and networking models. Networks exist so that data may be sent from one place to another-the basic con- cept of data communications. To fully grasp this subject, we must understand the data communication components, how different types…
Part 1 provides a general idea of what we will see in the rest of the book. Four major concepts are discussed: data communications, networking, protocols and standards, and networking models. Networks exist so that data may be sent from one place to another-the basic con- cept of data communications. To fully grasp this subject, we must understand the data communication components, how differe…
Every society forms a set of rules that establishes the boundaries of generally accepted behavior. These rules are often expressed in statements about how people should behave, and the individual rules fit together to form the moral code by which a society lives. Unfortunately, the different rules often have contradictions, and people are some- times uncertain about which rule to follow. For in…