tailieunhanh - NETWORK+ GUIDE TO NETWORKS, FOURTH EDITION - CHAPTER 6

Topologies and Access Methods Describe the basic and hybrid LAN physical topologies, and their uses, advantages and disadvantages Describe the backbone structures that form the foundation for most LANs Compare the different types of switching used in data transmission Understand the transmission methods underlying Ethernet, Token Ring, FDDI, and ATM networks Describe the characteristics of different wireless network technologies, including Bluetooth and the three IEEE standards | NETWORK+ GUIDE TO NETWORKS, FOURTH EDITION Chapter 6 Topologies and Access Methods Network+ Guide to Networks, 4e OBJECTIVES Describe the basic and hybrid LAN physical topologies, and their uses, advantages and disadvantages Describe the backbone structures that form the foundation for most LANs Compare the different types of switching used in data transmission Network+ Guide to Networks, 4e OBJECTIVES (CONTINUED) Understand the transmission methods underlying Ethernet, Token Ring, FDDI, and ATM networks Describe the characteristics of different wireless network technologies, including Bluetooth and the three IEEE standards Network+ Guide to Networks, 4e SIMPLE PHYSICAL TOPOLOGIES Physical topology: physical layout of nodes on a network Three fundamental shapes: Bus Ring Star May create hybrid topologies Topology integral to type of network, cabling infrastructure, and transmission media used Network+ Guide to Networks, 4e BUS Single cable connects all . | NETWORK+ GUIDE TO NETWORKS, FOURTH EDITION Chapter 6 Topologies and Access Methods Network+ Guide to Networks, 4e OBJECTIVES Describe the basic and hybrid LAN physical topologies, and their uses, advantages and disadvantages Describe the backbone structures that form the foundation for most LANs Compare the different types of switching used in data transmission Network+ Guide to Networks, 4e OBJECTIVES (CONTINUED) Understand the transmission methods underlying Ethernet, Token Ring, FDDI, and ATM networks Describe the characteristics of different wireless network technologies, including Bluetooth and the three IEEE standards Network+ Guide to Networks, 4e SIMPLE PHYSICAL TOPOLOGIES Physical topology: physical layout of nodes on a network Three fundamental shapes: Bus Ring Star May create hybrid topologies Topology integral to type of network, cabling infrastructure, and transmission media used Network+ Guide to Networks, 4e BUS Single cable connects all network nodes without intervening connectivity devices Devices share responsibility for getting data from one point to another Terminators stop signals after reaching end of wire Prevent signal bounce Inexpensive, not very scalable Difficult to troubleshoot, not fault-tolerant Network+ Guide to Networks, 4e BUS (CONTINUED) Figure 6-1: A terminated bus topology network Network+ Guide to Networks, 4e RING Figure 6-2: A typical ring topology network Network+ Guide to Networks, 4e STAR Figure 6-3: A typical star topology network Network+ Guide to Networks, 4e STAR (CONTINUED) Any single cable connects only two devices Cabling problems affect two nodes at most Requires more cabling than ring or bus networks More fault-tolerant Easily moved, isolated, or interconnected with other networks Scalable Supports max of 1024 addressable nodes on logical network Network+ Guide to Networks, 4e HYBRID PHYSICAL TOPOLOGIES: STAR-WIRED RING Figure 6-4: A star-wired ring topology .