Kindergarten Management System
Chapter 5: Physical and Logical Topologies
Objectives
After reading this chapter and completing the exercises you will be able to:
• Describe the basic and hybrid LAN physical topologies, their uses, advantages, and disadvantages • Describe a variety of enterprise-wide and WAN physical topologies, their uses, advantages, and disadvantages • Compare the different types of switching used in data transmission • Understand the transmission methods, or logical topologies, underlying Ethernet, Token ring, LocalTalk, and FDDI networks
Teaching Tips
Simple Physical Topologies
1. Explain that a physical topology is the actual layout plan or pattern of a LAN. Contrast this with the logical topology of a given LAN, and emphasize that the two may not resemble one another.
2. Discuss how nodes in a bus topology all nodes share a single channel and how each node communicates in turn. Explain why T-connectors and terminators are necessary on a bus topology network. Define signal bounce.
3. Describe some of the limitations of bus topology networks such as scalability and fault tolerance.
4. Explain why bus topology networks are difficult to troubleshoot. Share an experience from your networking career that pertains to working with and troubleshooting, bus topology networks.
5. Briefly describe IBM’s development of Token Ring, and its place in the market today. Explain that Token Ring is not restricted to the original physical ring topology, but can run on a star-wired network.
6. Discuss token passing on a ring network. Ask the class why token passing makes the ring topology an “active topology.”toplogy
7. Describe why star networks are more fault tolerant than ring or bus topology networks. Ask the class to identify potential drawbacks to star networks.
8. Emphasize to students that a contemporary network rarely relies on one simple topology. Give examples of some exceptions to this rule.
Hybrid
Objectives
After reading this chapter and completing the exercises you will be able to:
• Describe the basic and hybrid LAN physical topologies, their uses, advantages, and disadvantages • Describe a variety of enterprise-wide and WAN physical topologies, their uses, advantages, and disadvantages • Compare the different types of switching used in data transmission • Understand the transmission methods, or logical topologies, underlying Ethernet, Token ring, LocalTalk, and FDDI networks
Teaching Tips
Simple Physical Topologies
1. Explain that a physical topology is the actual layout plan or pattern of a LAN. Contrast this with the logical topology of a given LAN, and emphasize that the two may not resemble one another.
2. Discuss how nodes in a bus topology all nodes share a single channel and how each node communicates in turn. Explain why T-connectors and terminators are necessary on a bus topology network. Define signal bounce.
3. Describe some of the limitations of bus topology networks such as scalability and fault tolerance.
4. Explain why bus topology networks are difficult to troubleshoot. Share an experience from your networking career that pertains to working with and troubleshooting, bus topology networks.
5. Briefly describe IBM’s development of Token Ring, and its place in the market today. Explain that Token Ring is not restricted to the original physical ring topology, but can run on a star-wired network.
6. Discuss token passing on a ring network. Ask the class why token passing makes the ring topology an “active topology.”toplogy
7. Describe why star networks are more fault tolerant than ring or bus topology networks. Ask the class to identify potential drawbacks to star networks.
8. Emphasize to students that a contemporary network rarely relies on one simple topology. Give examples of some exceptions to this rule.
Hybrid