2. What is a LAN?
• Local Area Network which supports fast low-error data transfer on
a physical network infrastructure that covers a small, limited
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3. Network card
• Connects a computer to a computer network.
• It is considered a piece of computer hardware.
5. Router
• Small devices that join multiple networks together.
• 3 gateway device; connects two or more networks that router
operates at the network layer.
6. Protocol TCP/IP
• Thanks to this protocol, different SO operating systems and
different networks can communicate each other.
7. TCP
• Provides reliable transfer of information transmitted across the
network and IP transfers information to the destination computer.
8. IP
• It is located on the computer
• To make the computer identifiable
