Suppose that host A is connected to a router R 1, R 1 is connected to another router,
R 2, and R 2 is connected to host B. Suppose that a TCP message that contains 900
bytes of data and 20 bytes of TCP header is passed to the IP code at host A for delivery
to B. Show the Total length, Identification, DF, MF, and Fragment offset fields of
the IP header in each packet transmitted over the three links. Assume that link A-R1
can support a maximum frame size of 1024 bytes including a 14-byte frame header,
link R1-R2 can support a maximum frame size of 512 bytes, including an 8-byte frame
header, and link R2-B can support a maximum frame size of 512 bytes including a
12-byte frame header
