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Some Mid-Term Thoughts

Join us for a concise review of the upcoming mid-term exam scheduled for Thursday, October 25. The exam will last 1 hour and 15 minutes, but should not require more than 45 minutes to complete. Students are allowed to bring one cheat sheet and should focus on applying concepts from the syllabus, including Dijkstra's algorithms and tradeoffs in networking. The format may include multiple-choice and true/false questions, along with some problem-solving exercises. Example questions will cover topics such as TCP behavior, bandwidth constraints, and DNS advantages/disadvantages.

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Some Mid-Term Thoughts

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  1. Some Mid-Term Thoughts

  2. Thursday, Oct 25, in class • 1 hour 15 minutes exam • Should not take more than 45 minutes • Allowed to bring in one cheat sheet • Fit in as much as you can • But not much point • Syllabus • Everything covered till today • Inclusive of Djikstra’s algorithms in Routing

  3. About the exam format • Questions will not test whether you remember • You will not have to write long essays • Not be asked to write code • Will probably have • Multiple choice questions • True and false questions • Some problems to solve • Arguments about tradeoffs • Exact test format • Not yet decided

  4. Some Examples: • (T/F) TCP sends a new packet whenever it gets an ACK (not a DupACK) back from the receiver. • (T/F) Bandwidth constraint does not necessarily imply timing constraints • Argue in favor or against: Stop and wait is never better than GBN • Calculate expected latency when a proxy is, and is not, used for caching webpages. • The network, and relevant data will be provided • Write 2 advantages and 2 disadvantages for recursive and non-recursive DNS • Design a finite state machine for Go-Back-N • Calculate RTO for a given network (relevant data will be given) • Fill out an incomplete figure on TCP’s actions in certain conditions • Prove that TCP flows are fair to each other, irrespective of who starts first • Model TCP delay for slow start

  5. Questions?

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