Bsc CSIT Semester 4 – Computer Networks – Unit 1: Introduction to Computer Network (6Hrs.)

1. Introduction: A network topology refers to the arrangement or structure of how computers, cables, and other network devices are connected to each other. It shows the physical or logical layout of

Different Types of Network Computer networks are mainly divided into the following types based on their size, coverage area, and purpose: --- 1. PAN (Personal Area Network) - PAN is the smallest type

Protocol and OSI Model --- Protocol Definition: A protocol is a set of rules and conventions that governs how data is transmitted, received, and interpreted over a network between two or more devic

Network Topology --- 1. Why do we need Network Topology? Network topology defines the physical or logical arrangement of nodes and links in a network. It is important because: - Determines how devi

Protocol: A protocol is a set of rules and conventions that govern how data is transmitted and received over a network. It defines: - How communication starts and ends. - How errors are detected and c

Client/Server Network Definition: A Client/Server network is a network architecture where a central server provides resources or services (like files, printing, databases) to multiple clients. Clien

Short Notes (Any Two) --- a. Backbone Network Definition: A backbone network is the central part of a network that connects various sub-networks (LANs, MANs) and provides a path for the exchange of

TCP/IP Model and Comparison with OSI Model TCP/IP Model Layers 1. Application Layer - Provides network services directly to user applications. - Protocols: HTTP, FTP, DNS, SMTP. - Combines O

Network Topology Definition: Network topology is the physical or logical arrangement of nodes (computers, devices) and the connections between them in a network. It determines how data flows between

Local Area Network (LAN) Definition: A Local Area Network (LAN) is a network that connects computers and devices within a small geographic area, such as a home, office, or building, allowing resourc

Introduction The OSI (Open Systems Interconnection) Model is a conceptual framework used to understand and standardize the functions of a communication system or network. It divides network communic