Protocols and Standards

POP

• Post Office Protocol

• an email protocol

• it covers the transfer of emails from the server to the client

• removes (pops) the emails from the server as it does so

IMAP

• Internet Message Access Protocol

• an email protocol

• used for transferring emails from a server to a client

• does not remove the email from the server

SMTP

• Simple Mail Transfer Protocol

• an email protocol

• used for sending emails from the client to the server

HTTP

• Hyper Text Transfer Protocol

• used for the transfer of HTML pages (web pages) from a web server to a client

HTTPS

• Hyper Text Transfer Protocol Secure

• covers the transfer of encrypted web pages from a web server to a client

FTP

• File Transfer Protocol

• covers the transfer of files from a server to a client and vice versa

IP

• Internet Protocol

• covers addressing

TCP

• Transmission Control Protocol

• controls the volume of traffic on the Internet (flow control), error detection and correction as well as encapsulation of data into packets

protocol layers

grouping protocols with similarities in their function

standard

• technical specifications that specify how software and hardware components must work

• each standard will include one or more sets of protocols

protocol

a set of rules that determine how two devices will communicate

Ethernet

• a protocol that specifies how devices should be connected in a wired LAN

• defines how data should be transmitted using MAC addresses to determine which device the data should go to

• also defines what should happen if a collision occurs on the network

Wi-Fi

• a set of protocols that specify how devices can communicate wirelessly using radio waves

• defines the frequency band and channel that should be used for communication as well as transmission rates and how devices authenticate

Bluetooth

• a wireless protocol

• much shorter range than Wi-Fi

• uses ultra-high frequency radio waves

• typically used to transfer files between mobile devices and for headphones