Chapter 1 NETWORKING BASICS.

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Presentation transcript:

Chapter 1 NETWORKING BASICS

Chapter 1: NETWORKING BASICS LANS, WANS, AND MANS Three main networking technologies are used to connect computers and networks together: Local area network (LAN) Wide area network (WAN) Metropolitan area network (MAN)

Chapter 1: NETWORKING BASICS LAN Used to network computers located in a limited geographical area such as a room, floor, or building Has three main attributes Topology: bus, star, and ring Medium: copper, fiber, and wireless Protocols

Chapter 1: NETWORKING BASICS EXAMPLE OF A LAN

Chapter 1: NETWORKING BASICS WAN Spans a large geographic area Defined as an internetwork (private or public) that connects many LANs Uses routers and usually point-to-point links Examples of WANs The Internet Private global enterprise networks

Chapter 1: NETWORKING BASICS EXAMPLE OF A WAN

PROTOCOLS AND SERVICES Chapter 1: NETWORKING BASICS PROTOCOLS AND SERVICES Facilitate communication between two networked devices Perform data encapsulation Provide a common language to communicating devices Provide either connectionless or connection-oriented services

CONNECTIONLESS VS. CONNECTION-ORIENTED Chapter 1: NETWORKING BASICS CONNECTIONLESS VS. CONNECTION-ORIENTED Connectionless protocols Do not require a connection Have very little overhead Are fast and unreliable Connection-oriented protocols Require a connection Require more overhead Are slower and very reliable

PHYSICAL LAYER TRANSMISSION Chapter 1: NETWORKING BASICS PHYSICAL LAYER TRANSMISSION

NETWORK LAYER ADDRESSING Chapter 1: NETWORKING BASICS NETWORK LAYER ADDRESSING

Chapter 1: NETWORKING BASICS ROUTING

Chapter 1: NETWORKING BASICS SUMMARY LANs, WANs, and MANs allow groups of computers to share information. Signaling protocols are used to transmit data as 1s and 0s. Protocols provide a common language for communication hosts.