Final Exam Review Release questions via webcourse “assignment” around 10am, 04/23 (next Monday), due via webcourse at 6pm, next day (next Tuesday) Submit format: –Word file, PDF file –Scanned answer sheets Make sure your writing is large and readable, file names show page number –Photos of your answer sheets if you have no scanner Make sure it is readable, file names show page number You can resubmit, so submit first version early! –Don’t wait until the last one hour to submit! –No excuse of not being able to submit! (unless webcourse is down for the all day on 04/24) 10am - 11:45am, 2pm-3:30pm on 04/23, you can call me for any questions related to exam problems –Office number: (HEC 243)

Exam Coverage All questions in the four homework assignments and the spam assignment All questions in the two mid-term exams Solutions to all 4 homework and 2 midterm exams are on webcourse. All examples given in this review lecture –All examples given in previous two mid-term exam review lectures

Question Types –Knowledge questions –True or false statement (explain why) –Protocols –Calculations

Knowledge Question Examples What is smurf attack? What is SYN flooding attack? Among them which one must use spoofed IP address? What is TLD? What is authoritative DNS server? What port does DNS use? What are the four types of DNS RRs? What are cybersquatting? Typosquatting? What are the three major reasons, according to lecture notes, for the DNS to be vulnerable? What is firewall? What are the two modes of port scanning? What are false positive? False negative?