Exam 2 -- closed book section -- 30 November
Problem 1 (12 points)
What are three significant differences between UDP and TCP?
Problem 2. (6 points)
Why is the select system call useful in writing
networking applications?
Problem 3. (12 points)
Give short, one or two sentence, definitions of the following
terms:
- SNMP agents
- DNS (Domain Name System) resolvers
- Supernetting
Problem 4. (30 points)
In about one paragraph each, explain how the following actions
are implemented in IP and its related protocols.
- Computing the average round trip time of a TCP packet
- Establishing a TCP connection
- Finding the number of interfaces in a distant router
- Looking up the IP number of the machine math.ucla.edu
- Looking up the name of the machine with IP number
107.83.5.2
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