1. What transport protocols are used in the following applications?
a) Simple connection-oriented streaming voice/video without control for pause, stop, resume, forward, backward.
b) Unreliable, no handshaking, no ordering, no retransmission of data.
c) SS7 transport.
d) Connection-oriented, reliable and ordered 3-way handshaking streaming of data transmission,
e) Streaming voice/video with control for pause, stop, resume, forward, backward.
f) Connection-oriented, reliable and ordered 3-way handshaking blocks (chunks) of stream data transmission.
g) Reservation of transmission bandwidth without real-time traffic feedback.
h) Reservation of transmission bandwidth with real-time traffic feedback.
i) Providing secure but not reliable transmission.
j) Providing secure and reliable transmission of data.
2.Two data centers used for retail credit authorization are located in two different major population centers,
which are separated from each other by a large zone of very little population. Each data center is intended to cover a particular geographical area and thus contains data that reflect the account status of the card holders in that area (only). Terminals for each are connected to the corresponding data center. Communication between both data centers occurs only in case a card holder from one geographical area shops in a retail credit establishment of the geographical area covered by the other data center.
a) Classify the relationship between each terminal and the corresponding data center as either client/server or peer-to-peer. Explain your answer.
b) Classify the relationship between both data centers as either client/server or peer-to-peer. Explain
3. Consider a simple telephone network consisting of two end offices and one intermediate switch with a 1-MHz full-duplex trunk between each end office and the intermediate switch. The average telephone is used to make four phone calls per 8-hour workday, with a mean call duration of six minutes. Ten percent of the calls are long distance. What is the maximum number of telephones an end office can support?