1. Midterm Exam #2 Review Exam time is Mar. 28th 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, iPhone, etc)
The numbers in exam are easy to compute

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

3. 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?
IPv6 uses how many bits for addresses?

4. Knowledge Question Examples
Difference between IPv6 tunneling and IPv4 NAT?
What is “virtual circuit switching”? Pros and cons compared with datagram switching? (ch20.ppt, Page 12-14)
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? IP address? IPv6 address?

5. Calculation Problem Examples
Checksum (ch10)
Bit stuffing and byte stuffing (ch11)
Stop-and-wait ARQ for noisy channel (hw2, Q8)
Go-back-N utilization compute (ch11.ppt, Page 34)
IP block subnet allocation (ch19.ppt, Page 34-40)
NAT table and address translation (ch19.ppt, Page 44)