DATA COMMUNICATION Lecture-5
Recap of Lecture 4 Standards Standard Organizations Line Configuration Categories of Line Configuration
Overview of Lecture 5 Topology Categories of Topologies Transmission Modes
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”
Categories of Topology Mesh Star Tree Bus Ring
Mesh Topology
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
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
Star Topology
Tree Topology
Bus Topology
Summary Topology Categories of Topologies
Suggested Reading Section 2.2 “Data Communications and Networking” 2nd Edition by Behrouz A. Forouzan