Unit 3:-
Winter 2023
1. Draw the neat labeled diagram of OSI (open System interconnection)
reference model. (2m)
2. Explain the major functions of the first 6 layers of OSI model. (6m)
3. Compare OSI reference model and TCP/IP Protocol (six points) (6m)
Summer 2023
1. List four upper most layers of OSI model.(2m)
2. Draw TCP/IP model. State the functions of each layer. (4m)
3. Describe the functions of data link layer and network layer in OSI
model.(4m)
4. Write a procedure for the following: (6m)
To share a file
To share printer in network.
Summer 2022
1. List any two functions of presentation layer. (2m)
2. List the four commands of SMTP.
3. Explain ISO-OSI reference model with diagram. (4m)
4. Describe the working of following layers of OSI model (4m)
(1) Data link layer
(2)Network layer
5. Compare between OSI and TCP/IP model (any 4 points) (4m)
6. List and explain functions of session layer. (4m)
7. Describe the concept of data encapsulation. Explain in details.(6m)
Summer 2019
1. Define meaning of layered approach. (2m)
2. Describe the working of following layers of OSI model (4m)
(1) Data link layer
(2)Network layer
3. Draw TCP/IP reference model. Write the function of each layer. (4m)
4. Write stepwise procedure to share file on network.(4m)
5. Describe major functions of transport layer in TCP/IP model. (4m)
6. Differentiate between OSI model and TCP/IP model (any six points).
Winter 2019
1. Define protocol. State its significance.(2m)
2. Draw OSI model. State function of each layer. (4m)
3. Describe design issue of layering in computer network. (4m)
4. Describe working of TCP/IP model how it differs fro OSI? (4M)
5. Define interfaces, services, packets and layer. (4m)
6. Enlist steps to share a printer in a network and share a scanner within
two computers.(6m)
