Study

computer network is system in which multiple computer devices are connected to each other to share information and resources  LAN- local area network is computer network that interconnects computer devices within limited area such as school, laboratery . Man- metropolitan area like city . wan- large scale geographical area. protocol- is set of rules to govern data communication  OSI MODEL=  OSI stands for  Open System Interconnection   is a reference model that describes how information from a   software   application in one   computer   moves through a physical medium to the software application in another computer. Internet - is type of world wide computer network  internet is computer network that interconnects hundreds of millions of computer devices throughout the world  WEB-  Web page consist of objects . object can be HTML file,text file, audio file etc.. if webpage consist of HTML text and five images then web page has 6 objects. A web page is given an online address called a U