I want some people to help me answer these questions, tried google but doesn't give the answers I wanted, this is for my assignment, it'd be appreciated if anyone could help so I can use it for reference, thank you. Questions: What are 3 main reasons networks are created? What are 2 types of networks used in industry? What does NOS stand for? 3 types of OS that used in a P2P network What is a client/server based network? & the roles are/ Networks are broken up into 3 main areas LANs PANs WLANs and WANs, what are 3 characteristics of each of these networks? What are the steps to take if your network failed the OSI has 7 layers, what are those layers & what is each layer used for? Protocols are vital aspect of communication within a network. List and explain 3 protocols used with a network What are the 4 numbers in a IP address called what is NAT and SPI why are they important? What is a network topology? There are 5 classes of addresses what are these addresses and what are they used for?