The correct answer is E. None of the above.
A ring network is a type of local area network (LAN) in which each computer is connected to two other computers, forming a ring. Data is transmitted around the ring in one direction. If a computer needs to send data to another computer, it sends the data to the computer next to it in the ring. That computer then forwards the data to the next computer, and so on until the data reaches its destination.
A LAN is a computer network that is limited to a small area such as a home, office, or school. LANs are typically used to share resources such as printers, file servers, and internet access.
A star network is a type of network in which each computer is connected to a central hub or switch. The hub or switch acts as a central point for data transmission. When a computer needs to send data to another computer, it sends the data to the hub or switch, which then forwards the data to the destination computer.
EuroNET was a packet-switched data network that was established in 1979 by the European Economic Community (EEC). EuroNET was used to connect research and academic institutions in the EEC. It was eventually replaced by the European Academic and Research Network (EARN).
A packet switching network is a type of network in which data is transmitted in small units called packets. Each packet contains the destination address of the data, as well as the data itself. Packets are routed through the network independently of each other. This allows for more efficient use of network resources, as well as greater reliability.