Computer Networks

• A network interconnection is every device in a network whether its physical or logical
• Node: Any device connected to a network.
• Network topology: physical connection of a network
• Terminal: device that allows you to introduce information and transmits it, it checks if it is being transmitted in the correct way

Types of computer networks

• LAN/Local Area Network: is a local area network and it connects devices in a small area (like a house or office).
• MAN/Metropolitan Area Network: is a metropolitan area network that covers a city or region.
• WAN/Wide Area Network: is a wide area network, connecting devices globally.
• PAN/Personal Area Network: is a personal area network, connecting nearby devices (like bluetooth).
• CAN/Campus Area Network: a campus area network covers universities or corporations. SAN/Storage Area Network: a storage area network that connects servers for data management.
• VPN/Virtual Private Network: a virtual private network which protects and encrypts connections on the internet.

Network Protocol

• Network protocol states that rules allow communication between devices in a network

Most important network protocols

• TCP/IP (Transmission Control Protocol/Internet Protocol): are the protocols that enable communication on the internet.
• HTTPS (HyperText Transfer Protocol Secure): a secure protocol for transferring data on the web.
• FTP (File Transfer Protocol): a protocol for transferring files between devices on a network.
• DNS (Domain Name System): a system that translates domain names into IP addresses.
• DHCP (Dynamic Host Configuration Protocol) : a protocol that automatically assigns IP addresses on a network.