[ITAL] Network Protocol

describe what a protocol is and different types of protocols (including: Wide Area Network protocols and Local Area Network access protocols)

Set of rules that ensure data is transferred between devices correctly

Important so that different devices, platforms can communicate with each other

Method of addressing

Type of error checking

How to indicate start and end of message

How receiver confirms the message

Compression methods

Ethernet Protocol

Transmitting Dataframes within LAN

Use Physical Address (MAC address) for addressing

Additional protocol: PPP

IP - Internet Protocol

Defines IP Address

IP deals with data packets, and routing of data packets to destination

Router is a network layer device

TCP is an example transport layer protocol

UDP is another transport layer protocol

Watch video and answer:

https://youtu.be/AYdF7b3nMto

Application layer protocols built on-top of TCP

Some common Protocols:

HTTP, HTTP/S: Web server communicate with client (e.g. Browser)

IMAP, POP3, SMTP: Email protocols

FTP: File Transfer Protocol

DNS: Resolving (translate) web domain name to IP addresses