Computer Networks · Unit 1 · 6 hrs
Introduction to Computer Network
Exam-focused notes for Introduction to Computer Network (Computer Networks, CSC263): what the TU syllabus asks and how it has actually been tested, with 12 solved past questions from this unit.
What this unit covers
- Definitions, Uses, Benefits
- Overview of Network Topologies (Star, Tree, Bus,...)
- Overview of Network Types (PAN, LAN, CAN, MAN,...)
- Networking Types (Client/Server, P2P)
- Overview of Protocols and Standards
- OSI Reference Model
- TCP/IP Models and its comparison with OSI
- Connection and Connection-Oriented Network Services
- Internet, ISPs, Backbone Network Overview
Connection and Connection-Oriented Network Services
Explain about connection-oriented network services. [5]
A connection-oriented service is a type of network service in which a dedicated logical path (connection) is established between the sender and receiver before any data is transmitted. The connection is maintained throughout the communication session and is...
Full solved answer →Overview of Network Types
Explain different types of network types. [5]
A network is a collection of interconnected devices that can communicate and share resources with each other. Networks are classified based on their size, geographic coverage, and purpose. The main types of networks are described below: --- - The smallest a...
Full solved answer →Explain LAN with example. How is it different from PAN? [5]
A Local Area Network (LAN) is a type of computer network that connects computers and other devices within a limited geographical area such as a home, office building, school, or campus. It allows connected devices to share resources such as files, printers,...
Full solved answer →OSI Reference Model
What is protocol? Explain each layer of OSI model in detail.[10]
--- A network protocol is an established set of rules that determine how data is transmitted between different devices in the same network. It allows connected devices to communicate with each other, regardless of any differences in their internal processes...
Full solved answer →Overview of Network Topologies
Why do we need network topology? Explain star topology along with its merits and demerits. [5]
--- Network Topology refers to the physical or logical layout of a network. It defines the way different nodes are placed and interconnected with each other, and also describes how data is transferred between these nodes. We need network topology for the fo...
Full solved answer →Define network topology. Explain ring topology along with its merits and demerits. [5]
Network topology refers to the physical or logical layout of a network. It defines the way different nodes are placed and interconnected with each other. Network topology also describes how the data is transferred between these nodes. Network topology is ca...
Full solved answer →Explain different types of network topologies. [5]
Network Topology refers to the physical or logical layout of a network. It defines the way different nodes are placed and interconnected with each other, and also describes how data is transferred between these nodes. Network topology is categorized into fi...
Full solved answer →Overview of Protocols and Standards
Define Protocol. Why do we need standards? [5]
--- A protocol is a set of rules that governs communication between devices in a network. It defines how data is transmitted, received, and interpreted across a network. The three key elements of a protocol are: Element Description ------ Syntax Refers to t...
Full solved answer →Write short notes on (any two): a. Protocol and standards b. Switch c. Checksum [5]
--- A protocol is a set of rules that governs data communication between devices in a network. Without a protocol, two devices may be connected but cannot communicate meaningfully. The three key elements of a protocol are: Element Description ------ Syntax ...
Full solved answer →Networking Types
Explain client/server network. How is it different from peer to peer network? [5]
Client/Server architecture is a computing model in which the server hosts, delivers, and manages most of the resources and services to be consumed by the client. - One or more client computers are connected to a central server over a network or internet con...
Full solved answer →Internet, ISPs, Backbone Network Overview
Write short note on (any two): a. Backbone network b. ISDN c. Signal [5]
--- A backbone network is a network containing a high-capacity connectivity infrastructure used to connect different parts of a larger network. - It acts as the central highway that interconnects various smaller networks (such as LANs) and carries the bulk ...
Full solved answer →TCP/IP Models and its comparison with OSI
Explain each layer of TCP/IP model in detail. Compare it with OSI model.[10]
The TCP/IP model (Transmission Control Protocol / Internet Protocol) is a concise, practical networking model that forms the foundation of the modern Internet. Unlike the OSI model which has 7 layers, the TCP/IP model has 4 layers. It was developed by the U...
Full solved answer →Make Unit 1 stick
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