Network Protocols

• Network Protocols are a set of rules for how devices communicate.
• Every device has a unique number called a MAC Address.
• MAC addresses are assigned by manufacturers and cant be changed. They are used so devices can be found on a network.
• Communication on the SAME network uses MAC Addresses.
• Communication on a DIFFERENT network uses IP Adresses.
• IP adresses are assigned before the device can access the network.
• IPv4 uses 32 bits and IPv6 uses 128 bits.
• TCP/IP sets rules for how devices connect to the network.
• SMTP is Simple Mail Transfer Protocol - Used to send emails.
• IMAP is Internet Message Access Protocol - Retrieve and store emails on Server
• POP3 is Post Office Protocol- Retrieve and store emails on Device.
• FTP is File transfer protocol - Transfers files between computers.
• HTTP is Hypertext Transport Protocol - used to access websites.
• HTTPS is Hypertext Transport Secure Protocol - used to access websites securely.
• A Network Layer is a group of protocols with similar functions.