- There are five type of protocol, which are Hypertext Transfer Protocol (HTTP), Simple Mail Transfer Protocol (SMTP), Fail Transfer Protocol (FTP), Transmission Control Protocol (TCP) and Internet Protocol (IP)
- Modem is a device that enables a computer to transmit data over telephone or cable lines.
- A router is used to connect segments of a LAN.
- A hub/switch forwards data packets across a network toward their destinations.
- WAP connects wireless communication devices together to form a wireless network.
- Example of NOS are Windows NT, Red Hat Linux, Apple Share and Novell Netware.
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