BSCIT-302: Computer Networks

Section A: High-Value Long Questions (30 marks)

OSI Reference Model

1. List out and explain Layers of OSI (Open Systems Interconnection) reference model with diagrams. (10/10 importance)

2. Draw and explain the OSI Reference Model. Discuss data encapsulation process through all layers. (10/10 importance) 1.

   Sender Side:  
   +----------------------+  
   |  Application Layer   |  (User Data)  
   +----------------------+  
   |  Presentation Layer  |  (Data Formatting)  
   +----------------------+  
   |  Session Layer       |  (Session Control)  
   +----------------------+  
   |  Transport Layer     |  (Segment)  
   +----------------------+  
   |  Network Layer       |  (Packet - IP Address Added)  
   +----------------------+  
   |  Data Link Layer     |  (Frame - MAC Address Added)  
   +----------------------+  
   |  Physical Layer      |  (Bits Transmission)  
   +----------------------+
   
   Receiver Side (Decapsulation in reverse)
   
   

3. Compare OSI Reference Model with TCP/IP protocol suite. Explain the functions of each layer in both models. (9/10 importance)

Network Topologies

1. List out and explain various topologies of Network in detail with diagrams, advantages, and disadvantages. (9/10 importance)
2. Explain Bus, Star, Ring and Mesh topologies with their merits and demerits. Include diagrams for each. (9/10 importance)
3. Write a detailed note on Ring Topology. Explain its working principle, advantages, disadvantages, and applications. (8/10 importance)

Transmission Media

1. Discuss Classification of Guided Media in detail with diagrams and specifications. (9/10 importance)
2. Explain twisted pair cable in detail with its types, advantages, disadvantages, and applications. (8/10 importance)
3. Explain types of Wireless Transmission in detail. Include propagation methods and applications. (8/10 importance)
4. What are various characteristics of Transmission Media? Explain with examples. (8/10 importance)

Network Components & Architecture

1. List out and define various components of Networking in detail. (8/10 importance)
2. Discuss: LAN Vs. MAN Vs. WAN with detailed comparison of technologies, scope, and applications. (8/10 importance)
3. Explain class-based IP addresses in detail with diagrams and examples. (7/10 importance)

Network Switching