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problem 1: What do you mean by the term distributed system? What are its benefits?

problem 2: What do you mean by the term protocol? Why are protocols required?

problem 3: Define the three transmission modes-Simplex, Half-duplex and Full-duplex. Distinguish them.

problem 4: What is the fundamental difference between Connection-oriented and Connection-less services? Describe with illustrations.

problem 5: Draw the architecture of OSI model and describe it in brief.

problem 6: The transport layer makes a connection between the source and destination. What are the three events included in a connection?

problem 7: What is the basic difference between a service point address, a logical address and a physical address?

problem 8: Draw the TCP/IP protocol suite. How do the layers of the TCP/IP protocol suite correlate to the layer of OSI model?

problem 9: What do you mean by the term Data Transmission? Name the two main categories of transmission media.

problem 10: What do you mean by the term Multiplexing? What are the three main Multiplexing methods?

problem 11: What are the three switching methods? Which is more efficient, circuit switching or virtual circuit switching? Why?

problem 12: Contrast the three groups of services provided by ISDN.

problem 13: Describe the term framing, error control and flow control with respect to data link layer.

problem 14: What do you mean by the term stop and wait protocol? Illustrate the shortest path and multipath method of routing.

problem 15: What are the services of network layer? Which protocols are mainly used at this layer?

problem 16: Describe all the protocols of transport layer. What are five transport classes defined by the OSI model?

problem 17: Describe the function of session layer. In what condition would synchronization points be significant?

problem 18: Describe the message handling system and file transfer access and management function of application layer.

problem 19: What are some of the factors which find out whether a communication system is a LAN, MAN or WAN?

problem 20: What is the function of a router? How does a router distinct from a bridge? How is repeater distinct from an amplifier?

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