P 224

For TFTP, draw the time (vertical) vs. message (horizontal) scenario for sending a binary file from end-system A to end-system B. Show all parameters for all messages on the message arrows going between the vertical end-system lines. Show all port values and/or designators. Assume proper operation of IP and UDP.

P 225

How does NFS (Network File System) avoid the problem of client confusion about requests in an environment of widely varying server and network response times?

P 226

In a Sun RPC over TLI (Transport Layer Interface) show the format of the complete RPC CALL packet including all headers from the OSI/RM Network layer upward. Develop a formula for determining the length of the procedure-specific parameters. The RPC header includes version #, XID, call, RPC version, procedure #, credentials field, program #, and verifier field.