Topologoes and Network Models-Data Communication Network-Quiz, Exercises of Data Communication Systems and Computer Networks

Download Topologoes and Network Models-Data Communication Network-Quiz and more Exercises Data Communication Systems and Computer Networks in PDF only on Docsity! Data Communication Networks Quiz. NO.1 (a) Total Marks: 15 Dated: 06-02-09 1. Draw a hybrid topology with a bus backbone connecting two star backbones. Each backbone connects three star networks and a bus network. 2. When a party makes a local telephone call to another party, is this a point-to-point or multipoint connection? Explain your answer. 3. Give some functions of Data Link Layer. 4. Discuss, with the aid of a diagram, the similarities and differences between the Internet model (as defined in chapter 2 of Forouzan) and the ISO model of network communications. 5. On your diagram for question 9), indicate the user support and network support layers in each of the models. 6. In the context of a network model, what is a peer-to-peer process? 7. What is the difference between network layer delivery and transport layer delivery? 8. What are headers and trailers, and how do they get added and removed? 9. Categorise the four basic topologies in terms of line configuration. 10. For n devices in a network, what is the number of cable links required for a mesh, ring, bus and star topology? How many network interface cards (or I/O ports) are required in total for each topology? 11. What are some of the factors that determine whether a network is a LAN, MAN or WAN? 12. For each of the following four networks, discuss the consequences if a connection fails: a. Five devices arranged in a mesh topology. b. Five devices arranged in a star topology (not counting the hub). c. Five devices arranged in a bus topology. d. Five devices arranged in a ring topology. docsity.com