Protocols and layers 1.3.2 Flashcards
What is hypertext transfer protocol?
defines how web browsers should request and web servers should deliver resources
What is Hypertext Transfer Protocol Secure?
A secure version of HTTP that adds encryption
What is File Transfer Protocol?
Transfer computer files between client and server
What is Post office protocol?
Retrieve emails from email server, downloads them then deletes them from server
What is Internet Message Access Protocol?
Allows multiple devices to have access to the same inbox, reads emails. Emails are read not downloaded and can be organised into folders
What is Simple Mail Transfer Protocol?
Send email to email server, or between servers
What is Transmission Control Protocol?
Splits data from applications into smaller data packets which can be sent across a network
What is “Retrieve emails from email server, downloads them then deletes them from server”
Post office protocol
What is “defines how web browsers should request and web servers should deliver resources”
hypertext transfer protocol
What is “Allows multiple devices to have access to the same inbox, reads emails”
Internet Message Access Protocol
What happens at the Network access layer? include function and relevant protocol
Converts data into electrical signals - Ethernet and Wi-Fi
What happens at the Internet layer? include function and relevant protocol
Adds IP address of sender and receiver to each packet, IP
What happens at the Transport layer? include function and relevant protocol
Splits encoded data into packets and allows them to be sent over network - TCP
What happens at the Application layer? include function and relevant protocol
Encodes data to allow communications between clients and servers. (the rest of the protocols)
What is the benefit of using layers?
Breaks down complex problems into smaller more manageable problems. Once layer can be developed or changed without affecting other layers
