A system of interconnected computers and computerized peripherals such as printers is called computer network. This interconnection among computers facilitates information sharing among them. Computers… Read More »DCN – Quick Guide

Computer systems and computerized systems help human beings to work efficiently and explore the unthinkable. When these devices are connected together to form a network,… Read More »DCN – Network Services

There are several protocols which work for users in Application Layer. Application layer protocols can be broadly divided into two categories: Protocols which are used… Read More »DCN – Application Protocols

Two remote application processes can communicate mainly in two different fashions: Peer-to-peer: Both remote processes are executing at same level and they exchange data using… Read More »DCN – Client Server Model

Application layer is the top most layer in OSI and TCP/IP layered model. This layer exists in both layered Models because of its significance, of… Read More »DCN – Application Layer Introduction

The User Datagram Protocol (UDP) is simplest Transport Layer communication protocol available of the TCP/IP protocol suite. It involves minimum amount of communication mechanism. UDP… Read More »DCN – User Datagram Protocol

The transmission Control Protocol (TCP) is one of the most important protocols of Internet Protocols suite. It is most widely used protocol for data transmission… Read More »DCN – Transmission Control Protocol

Next Layer in OSI Model is recognized as Transport Layer (Layer-4). All modules and procedures pertaining to transportation of data or data stream are categorized… Read More »DCN – Transport Layer Introduction

Every computer in a network has an IP address by which it can be uniquely identified and addressed. An IP address is Layer-3 (Network Layer)… Read More »DCN – Network Layer Protocols

In real world scenario, networks under same administration are generally scattered geographically. There may exist requirement of connecting two different networks of same kind as… Read More »DCN – Internetworking