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1st CLASS Rakibul Hasan Emon ID : 1915002532 Batch : 50th OSI – Open System Interconnection  OSI has 7 layer 1- Physical Layer : Cables, Topology ,LAN etc 2- Data Link : Mac protocols, Switchs 3- Network : IPV4,IPV6 4- Transport : 5- Session : How many time spend.buper speed slow 6-Presentation : Application : Software What is computer network ? A computer network is a set of computers connected together for the purpose of sharing resourcse .The most common resourcse shared today is connected to the internet. The internet itseltf can be considered a computer network.
Goals of computer network : 1) Resource Sharing : The main goal of the computer network is Resource Sharing.One computer to another computer over a network. 2) Performance : By messuring the speed of data transmission with nunber of users,connectivity and the software used. 3) Reliability : Make easy to use , for data communication in case of hardware failure or connectivity issues. 4) Scalability : Increases the system performance by adding more processor. 5) Security : Is the main characteristics of computer network. Network Hardware and Software : 1) Hardware Equipment : NIC, Server, Router etc 2) Software : Operating System 3) Cables and Connectors : Twisted-pair cable,coaxial cable.

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1st class

  • 1. 1st CLASS Rakibul Hasan Emon ID : 1915002532 Batch : 50th OSI – Open System Interconnection  OSI has 7 layer 1- Physical Layer : Cables, Topology ,LAN etc 2- Data Link : Mac protocols, Switchs 3- Network : IPV4,IPV6 4- Transport : 5- Session : How many time spend.buper speed slow 6-Presentation : Application : Software What is computer network ? A computer network is a set of computers connected together for the purpose of sharing resourcse .The most common resourcse shared today is connected to the internet. The internet itseltf can be considered a computer network.
  • 2. Goals of computer network : 1) Resource Sharing : The main goal of the computer network is Resource Sharing.One computer to another computer over a network. 2) Performance : By messuring the speed of data transmission with nunber of users,connectivity and the software used. 3) Reliability : Make easy to use , for data communication in case of hardware failure or connectivity issues. 4) Scalability : Increases the system performance by adding more processor. 5) Security : Is the main characteristics of computer network. Network Hardware and Software : 1) Hardware Equipment : NIC, Server, Router etc 2) Software : Operating System 3) Cables and Connectors : Twisted-pair cable,coaxial cable.