A computer network is a set of computers connected together for the purpose of sharing resources.

Computer Network

http://duniyarcomputer.com/mene-ne-networking/

 Local Area Network (LAN)

A local area network (LAN) is a network that connects computers and other devices in a relatively small area, typically a single building or a group of buildings.

https://techterms.com/definition/lan

 Wide Area Network (WAN)

A wide area network (WAN) is a computer network that spans a relatively large geographical area and consists of two or more interconnected local area networks (LANs).

http://www.allisonroyce.com/wide-area-network/

Peer-2-Peer Architecture

Peer-to-peer architecture (P2P architecture) is a commonly used computer networking architecture in which each workstation, or node, has the same capabilities and responsibilities. 

https://www.slideshare.net/srijish/p2p-principle-architecture-and-challenges-presentation

Client-Server Architecture

The client–server model is a distributed application structure that partitions tasks or workloads between the providers of a resource or service, called servers, and service requesters, called clients.

https://practice.geeksforgeeks.org/problems/explain-client-server-architecture

Bus Topology

In computer architecture, a bus is a communication system that transfers data between components inside a computer, or between computers. 

https://www.computerhope.com/jargon/b/bustopol.htm

Ring Topology

A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node - a ring.

https://www.computerhope.com/jargon/r/ringtopo.htm

Star Topology

Network topology is the arrangement of the various elements of a communication network. Network topology is the topological structure of a network and may be depicted physically or logically.

https://www.computerhope.com/jargon/s/startopo.htm

Mesh Topology

A mesh network is a local network topology in which the infrastructure nodes connect directly, dynamically and non-hierarchically to as many other nodes as possible and cooperate with one another to efficiently route data from/to clients.

https://www.computerhope.com/jargon/m/mesh.htm

Protocol

The TCP/IP Internet protocols, a common example, consist of: Transmission Control Protocol (TCP), which uses a set of rules to exchange messages with other Internet points at the information packet level

https://users.cs.cf.ac.uk/Dave.Marshall/PERL/node168.html