7.1 Internet Protocols and Network Hardware

7.1 Internet Protocols and Network Hardware

1. Protocols - Sets of rules that packets of data must follow when going through a network

2. Network communication protocol is a standard method for transmitting data from one computer to another across a network

3. Layers

   • 1. Physical Layer
     • The layer at which basic communication takes place
       • Modem
   • 2. Data link Layer
     • The go-between from the network layer to the physical layer
       • WiFi/Ethernet
   • 3. Network Layer
     • The Layer that is responsible for forwarding packets
       • Internet protocol (IP)
   • 4. Transport Layer
     • Responsible for dividing the data to be transmitted into smaller packets
       • Transmission control protocol (TCP), User datagram protocol (UDP)
   • 5. Application Layer
     • Consists of protocols that use the transport layer to deliver services ot the network or Internet layer
       • File transfer protocol (FTP), Hypertext transfer protocol (HTTP), Telecommunication Network (Telnet), Secure shell (SSH)