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Course name: Data communication and networking

Q1) (a) Explain the Network categories-LAN,MAN and WAN with the diagram and suitable examples for each that determine their communication system. (b) You have two computers connected by an Ethernet hub at home. Is this a LAN, a MAN, or a WAN? Explain your reason. (3 Marks) Q2) Give a brief history about the Internet and the Internet Service Providers(ISP). (2 Marks) Q3) Discuss the functions of the layers of an OSI model along with its diagram. (3 Marks) Q4) Match the following to one or more layers of the OSI model: (2 Marks) a. Route determination b. Flow control c. Interface to transmission media d. Provides access for the end user Q5) (a) Compare Analog signal with digital signal. (b) Show the comparison of periodic and aperiodic signals in data communication. (3 Marks) Q6) Discuss about the transmission impairment and its causes. (2 Marks) Q7) What are the types of error? Discuss the concept of Error detection . (3 Marks) Q8) Discuss the characteristics of Classful addressing and Classless addressing. (2 Marks)