1.3 Layering

Layering

Layering

Dividing networking tasks into smaller, simpler tasks that interact

Advantages of Layering

Reduces complexity, enables specific device manufacturing, promotes cross-vendor product compatibility

Protocols

Rules enabling network devices to communicate

TCP

Splits data into packets, reassembles at destination

IP

Routes and addresses data packets to correct destinations

HTTP

Transfers web pages for viewing in browsers

HTTPS

Securely transfers encrypted data using SSL

MAC Address

Unique hexadecimal identifier for network interface cards

FTP

Transfers files across a network

SMTP

Sends emails between mail servers

POP/IMAP

Receive and store emails, with POP deleting once downloaded and IMAP syncing across devices

TCP/IP Model Layers

Application, Transport, Network, Data Link - each with specific functions