Assignment questions Unit 1: Network Architecture 1. List at-least 5 main responsibilities of Data link layer & Transport layer of OSI reference model. 2. What is layered architecture? Explain the interaction between the layers using a suitable diagram. 3. What are the responsibilities of the network layer in the internet model? 4. Name some services provided by the application layer in the internet model. 5. What is the difference between a port address, a logical address and a physical layer address? 6. What is a peer-to-peer process? 7. What are the concerns of the physical layer in the internet model? 8. What are the headers and trailers, and how do they get added and removed? Unit 2: Data Link control 1. What are the three protocols considered for noisy channels? 2. Define framing and the reason for its need. 3. Compare and contrast the G0-Back-N ARQ protocol with Selective repeat ARQ. 4. Briefly describe the services provided by the data link layer. 5. Define piggybacking and its uses. 6. Compare and contrast byte-stuffing and bit-stuffing. Which technique is used in byte-oriented protocols? Which technique is used in bit-oriented protocols? 7. Which all the protocols of data link layer uses pipelining concept
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