Important Questions from Units – I and II Subject: Computer Networks UNIT-I 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 List various components in a network. List and define different network topologies with neat sketch? Also state the advantages and disadvantages of each topology? Write any four reasons for using layered protocols. Compare and contrast the OSI and TCP/IP reference models with neat Sketch and functions. Explain the functionality of each layer in OSI reference model. Explain the functionality of each layer in OSI reference model. Describe the advantages of a multipoint connection over a point- to-point connection? Discuss about Internet standards. What are the advantages of having layered architecture? Compare and contrast the OSI and TCP/IP reference models with neat Sketch and functions. With neat sketch List and define different Network topologies with advantages and disadvantages Explain about different Transmission Modes with neat sketch. With neat sketch explain categories of networks in detail. Explain about Connection-oriented and Connection-less services with comparison table. Explain about PAN, LAN, MAN and WAN. Explain the Service Primitives of a Network? Explain about Layered architecture with neat sketch? With neat sketch explain Transmission Modes? UNIT-II 1 2 3 4 5 6 7 8 9 Write the advantages of optical fiber over twisted-pair and coaxial cables Explain about various transmission media in physical layer with a neat sketch. Describe guided transmission media. Difference between guided and unguided Transmission media? With neat sketch explain the guided transmission media with applications, advantages and disadvantages. With neat sketch explain the unguided transmission media with applications, advantages and disadvantages. Explain about optical fiber transmission modes? Explain about types of Microwave Transmission with characteristics, advantages and disadvantages? Explain about satellite microwave communication