Thursday, 28 December 2017

Network Architecture

WELCOME TO MY BLOG

What is Network Architecture?
According to Shelly Cashman in the books DC 2018, network architecture was a configuration of computers, devices and media on a network.

Other than that, wikipedia define it as the design of a communication network. It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as  data formats use. This concept was brought by Shreyas Dhakal In  telecommunication, the specification of a network architecture may also include a detailed description of products and services delivered via a communications network, as well as detailed rate and billing structures under which services are compensated.



Differences between Client Server Network and Peer-To-Peer network

If you work with computers long enough, sooner or later you’ll hear the terms “client/server” and “peer-to-peer.” These terms may seem strange at first, but each describes a particular networking architecture. And each architecture is more suitable for certain types of businesses. In this article, I’ll explore the differences between client/server and peer-to-peer networks.


CategoryClient/Server NetworkPeer-To-Peer
SizeFor medium and large networkFor small network fewer than 10 computers
TrainingNeed trainingDoes not need training
Set upMore difficult to set upEasy to set up
InstallationMore expensive to installLess expensive to install
Operating systemNeed specific operating systemDoes not need specific operating system
ImplementationBig corporation with high security dataSmall business and home users

If you can afford it and if you have a qualified person to manage it, a client/server network is going to be your best bet. If you have only three employees who share a printer and occasional files, however, there’s absolutely nothing wrong with setting up a simple peer-to-peer networking environment. What’s best for you will depend on your budget and the size of your office.


Peer-to-Peer Network






Client Server Network


Thursday, 21 December 2017

Computer Network

WELCOME TO MY BLOG

What is computer network? How do we use it? What is it actually???? So, let me explain.

A computer network is a digital telecommunications network which allow nodes to share resources. In computer network, networked computing devices exchange with data each other using a data link. The connection between nodes are established using transmission medias which consists of wireless and physical media.
Network computer devices that originate, route and terminate the data are called network nodes. Nodes can include hosts such as personal computer, phones, servers as well as networking hardware. Two such devices can be said to be networked together when one device is able to exchange information with the other device, whether or not they have a direct connection to each other.

Advantages and Disadvantages Of Computer Network




AdvantagesDisadvantages
easy to communicateexpensive to build
Ability to share data, informations and databreakdowns and possible loss of resources
reduce the costs of purchasing hardwaresecurity threats
reduce the costs of buying softwarebandwidth issue
password protected

Transmission Media



Shelly Cashman said transmission media are materials or substances capable of carrying one or more signals in a communications channel.


Physical TransmissionWireless Transmission
Twisted-pair cableInfrared
Coaxial cableBroadcasts Radio
Fibre-optic cableCellular Radio
Microwave
Communication Satellites

Communications Devices

From a book named "Discovery Computer 2018" a communications device is defined as any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device.