Midterm Exam 2 Review Exam time is Mar

Midterm Exam #2 Review • Exam time is Mar. 28 th during class time. • The second homework and lecture content after first mid-exam until this class will be covered. • You need to compute out the final numerical results in your answer. Do not simply write down the formula as your answer. – You can bring a calculator (no computer, i. Phone, etc) – The numbers in exam are easy to compute

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

Knowledge Question Examples • Compare pros and cons for go-back-N and selective repeat ARQ? • Difference between “Ethernet hub” and “Ethernet switch”? • Difference between ethernet switch and router? • What is VLAN? Its advantages? • Interpret IP address block “a. b. c. d/n”? • What is NAT? Its pros and cons? • What is DHCP? Its pros and cons? • IPv 6 uses how many bits for addresses?

Knowledge Question Examples • Difference between IPv 6 tunneling and IPv 4 NAT? • What is “virtual circuit switching”? Pros and cons compared with datagram switching? (ch 20. ppt, Page 1214) • IP header size? • Name of ARP? Its purpose? • What is ICMP? Is ARP encapsulated in IP header or ICMP is? • What is MTU? Size of MTU for Ethernet? • How many bytes are used for MAC address? IPv 6 address?

Calculation Problem Examples • • • Checksum (ch 10) Bit stuffing and byte stuffing (ch 11) Stop-and-wait ARQ for noisy channel (hw 2, Q 8) Go-back-N utilization compute (ch 11. ppt, Page 34) IP block subnet allocation (ch 19. ppt, Page 34 -40) NAT table and address translation (ch 19. ppt, Page 44)