Advanced Operating Systems - Spring 2009 Lecture 23 – Monday April 13st, 2009 Dan C. Marinescu Email: dcm@cs.ucf.edu Office: HEC 439 B. Office hours: M, Wd 3 – 4:30 PM. TA: Chen Yu Email: yuchen@cs.ucf.edu Office: HEC 354. Office hours: M, Wd 1.00 – 3:00 PM.

Last, Current, Next Lecture Last time: Andrew File System Network and Distributed Operating Systems Multiple Access Networks Today Communication Networks. Local and Wide area Networks Local Area Networks. Multiple access algorithms Scheduled and non-scheduled access for Multiple Access Channels. Aloha. Random tree algorithm of Capetanakis. The FCFS. The stack algorithm. A splitting algorithm for communication with timing constraints. Token passing rings. Next time: Communication Networks