ITM 301 Chapter Notes - Chapter 5: Instant Messaging, Star Network, Channel (Communications)

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 301
• Professor: Nurul Huda

Document Summary

Simple physical topologies: physical topology: refers to the physical layout of the media, nodes, and devices on a network. It does not specify device types, connectivity methods, addressing schemes, or other specific details: physical topologies are divided into three fundamental shapes: bus, ring, and star. These shapes can be mixed to create hybrid topologies. Diane, who works across the hall, asking whether she wants to have lunch with you. You click the send button after typing your message, and the data stream that contains your message is sent to your nic. Your nic then sends a message across the shared wire that essentially says, i have a message for diane"s computer. the message passes by every nic between your computer and. Diane"s computer until diane"s computer recognizes that the message is meant for it and responds by accepting the data: at the ends of each bus network are 50-ohm resistors known as terminators.