1. DATA COMMUNICATION
Lecture-5

2. Recap of Lecture 4 Standards Standard Organizations Line Configuration
Categories of Line Configuration

3. Overview of Lecture 5 Topology Categories of Topologies
Transmission Modes

4. Topology
“The Topology is the geometric representation of the relationship of the links and linking devices” OR
“Topology defines physical or logical arrangement of links in a Network”

5. Categories of Topology
Mesh
Star
Tree
Bus
Ring

6. Mesh Topology

7. Links and Ports in Mesh Topology
Number of Links required to connect ‘n’ devices: n(n-1)/2
Number of I/O Ports: n-1

8. Links and Ports in Mesh Topology
In figure above, we have 5 Nodes, therefore:
No. of Links= 5(5-1)/2 = 10
No. of I/O Ports= 5-1 = 4

9. Star Topology

10. Tree Topology

11. Bus Topology

12. Summary
Topology
Categories of Topologies

13. Suggested Reading
Section 2.2 “Data Communications and Networking” 2nd Edition by Behrouz A. Forouzan