Below is a list of study topics for your midterm exam. Focus on these topics however I can not guarantee that these are the only topics covered on your exam. Good Luck!

• Understand the diffence between TCP and OSI Network models. Explain why network models and layered protocols are needed.
• Know the difference between UDP and TCP. Site examples on usage.
• Communication Satellites.
• Review the error detection and correction techniques covered in class.
• Sliding window protocols - Understand how they work.
• Understand the 2 data link protocols covered in your text book HDLC and PPP.
• What is the difference between Pure ALOHA and Slotted ALOHA? Understand the Carrier-Sense Protocols covered in class (persistent and non-persistent).
• Wireless LAN Protocols MACA and MACAW.
• Why use Manchester Encoding? How it works.
• 802.11 Physical Layer - Explain the differences and characteristics of Frequency Hopping Spread Spectrum and Direct Sequence Spread Spectrum.
• Explain the CSMA/CD Protocol
• Understand the purpose and workings of the network hardware covered in class - Hubs, Bridges, Routers, Repeaters and Gateways.
• Good Luck on Exam!