Terminologies Associated with Computer Network

When we study the subject of computer network, we encounter many terminologies associated with the subject. Some  terminologies are briefly described below. 1.       Entity :: The active component in each layer are called entities. Entity can be a software process or hardware like an intelligent input/output device etc. 2.     Peer Entity :: Entities in the same layer running on different machines are called peer entities. 3.     Service provider and service user :: In a layered…

"Terminologies Associated with Computer Network"

Computer Network and Tree topology

A tree topology combines characteristics of bus and star topologies. It consists of groups of star-configured workstations connected to a linear bus backbone cable. This bus/star hybrid aprochsupports future expandability of the network much better then a bus or star alone. Advantages 1. The network is easy to extend by just adding another branch. 2. Fault isolation is relatively easy. Disadvantages 1. If the backbone cable breaks, the entire network goes down. 2. More difficult…

"Computer Network and Tree topology"

STAR TOPOLOGY, Computer network topology

In the star topology, all the computers and other network devices connected to a central device called a hub. Each connected device requires a single cable to be connected to hub. A hub normally accept data from a sending computer and delivers it to the computer for which the data is addressed. Hence a star network is not a broadcast network, rather a point-to-point network. Using a separate cable to connected to the hub allows…

"STAR TOPOLOGY, Computer network topology"

INFORMATION TECHNOLOGY : INTRODUCTION TO INTERNET

THE INTERNET, sometimes called simply “the Net”, is a computer network made up of thousands of worldwide. No one knows exactly how many computers are connected to the internet. It is certain , that these number in the millions and are increasing at a rapid rate. No one is in charge of the internet .There are organizations which develop technical aspects of this network and set standards for creating applications on it ,but no governing…

"INFORMATION TECHNOLOGY : INTRODUCTION TO INTERNET"