packet-A piece of a message transmitted over a packet-switching network.

Local area network (LAN) technologies connect many devices that are relatively close to each other, usually in the same building.

Wide area network (WAN) technologies connect a smaller number of devices that can be many kilometers apart

An IP (Internet Protocol) Address is an alphanumeric label assigned to computers and other devices that connect to a network using an internet protocol. 

Bus - Each node is daisy-chained (connected one right after the other) .Information sent from a node travels along the backbone until it reaches its destination node.

Ring - Like a bus network, rings have the nodes daisy-chained. The difference is that the end of the network comes back around to the first node, creating a complete circuit.

 Token is a special series of bits that travels around a token-ring network. As the token circulates, computers attached to the network can capture it.

- In a star network, each node is connected to a central device called a hub. The hub takes a signal that comes from any node and passes it along to all the other nodes in the network.

tree topology combines characteristics of linear bus and star topologies. It consists of groups of star-configured workstations connected to a linear bus backbone cable.

Protocol-

An agreed-upon format for transmitting data between two devices. The protocol determines the following:

 peer-to-peer, or abbreviated P2P, a type of network in which each workstation has equivalent capabilities and responsibilities. . Peer-to-peer networks are generally simpler, but they usually do not offer the same performance under heavy loads

Client-server architecture (client/server) is a network architecture in which each computer or process on the network is either a client or a server.