TAILIEUCHUNG - Lecture Business data communications: Chapter 12 - Behrouz A. Forouzan

Chapter 12 - Connecting LANs and WANs: Making backbone networks. In this chapter, we discuss devices that connect LANs and WANs and devices used for connection within a network. Backbone networks, networks that connect other networks, are also a topic of this chapter. | Chapter 12 Connecting LANs and WANs: Making Backbone Networks Differentiate between the different connecting devices and the layers each supports. Understand the functionality of a repeater and where it is used. Understand the difference between a two-layer and a three- layer switch. After reading this chapter, the reader should be able to: OBJECTIVES Understand the functionality of a bridge and where it is used. Understand the functionality of a router and where it is used. OBJECTIVES (continued) Distinguish between a logical bus and logical star backbone. Distinguish between a bridge-based and a router-based back- bone network. Understand the functionality of a backbone network and where it is used. CONNECTING DEVICES Figure 12-1 Connecting devices Figure 12-2 Repeater A repeater connects segments of a LAN together. Note: A repeater forwards every packet; it has no filtering capability. Note: Technical Focus: Repeaters and Amplifiers It is tempting to compare a repeater to an

• Quản trị mạng
• Business data communications
• Data communications
• Business data communications
• Connecting devices
• Backbone networks
• Making backbone networks
• Data link layer
• Network criteria
• Data communications system
• Data communications networks
• Media access control
• Network models
• Network standards
• Application layer
• Application architectures
• Physical layer
• Digital transmission
• Network and transport layers
• Transport layers
• Local area networks
• Traditional ethernet
• Wireless local area networks
• Wireless LANs
• Backbone network architectures
• Circuit switched networks
• Wide area networks
• Network security
• Risk assessment
• Network design
• Traditional network design
• Network management
• Configuration management