I. Network infrastructure: 1) Build a network for company or university which includes 500 employs and more (each employee has her own computer and note that the network can be extended more than 500 users). 2) Describe the staff distribution in this network (how many branches, departments, rooms, etc.) 3) End system devices: Computer, Laptop, IP phone, Server, Printer 4) Different types of network devices which needed to build your networks (e.g. Hub, Switch, Router, Bridge, Modem, Repeater, Access Point...) 5) Communication media (e.g. copper coaxial cable, twisted pair cable, fiber optic cable... and wireless). 6) IP Addressing and Subnetting (addressing range needed to configure the network components)