Your protocol should take into account the following situations: Messages

Design and describe an application-level protocol to be used between an automatic teller machine and a bank's centralized computer. Your protocol should allow a user's card and password to be verified, the account balance (which is maintained at the centralized computer) to be queried, and an account withdrawal to be made (that is, money disbursed to the user). Your protocol entities should be able to handle the all-toocommon case in which there is not enough money in the account to cover the withdrawal. Specify your protocol by listing the messages exchanged and the action taken by the automatic teller machine or the bank's centralized computer on transmission and receipt of messages. Sketc... click for more

Communication Networks Problem

1) SONET ring with four stations. Suppose tributaries established between each pair of stations to produce logical topology. Find capacity required in each hop of SONET ring in following three cases assuming first ring is unidirectional and then that ring is bidirectional a) Traffic between each pair of stations is STS-1 2) Calculate number of voice channels that can be carried by STS-1. Calculate number of MPEG2 video channels that can be carried by these systems? Please show how steps for the calculation. With your assistance, I will be able to complete the remaining parts of the questions.

Ethernet packet/frame , MAC, Manchestercoding.

Short description about the ethernet packets/frame. Manchester coding, description of the MAC and ethernet performance. Your manager has asked you to describe the frame format of a typical Ethernet packet. Prepare a written report. Be sure to discuss Manchester encoding, and Ethernet performance as more hosts are added to a network.

Compare circuit switching and packet switching...

Please explain in details the concepts of congestion and quality of service in data networks, and what technologies exist to help deal with these. OBJECTIVE: __Compare circuit switching and packet switching ___Discuss the characteristics of Internet, wireless, and local area networks Please cite all your resources

The most effective ways to filter data that travels along a network

What are the most effective ways to filter data that travels along a network (wired or wireless). IE. By MAC or IP, what are some others ways to secure data on a wired or wireless network.