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B3 - Protocols - Coggle Diagram
B3 - Protocols
web page protocols
www of interconnecetd web pages is the most common use of the internet.
Web pages needs to be transmitted from web server to browse on your computer using packet switching
common protocols used are HTTP and HTTPS
Hyper Transfer Protocol (HTTP): used to allow web server and browser to transfer hypertext documents.
an HTTP message requests teh web page from server
{acket switching used to send request
web server then sends the file and you can view it in your browser.
web page file part of TCP/IP protocol family so its broken into packets and send from web server to browser.
Hypertext Transfer Protocol Secure (HTTPS): secure version if HTTP
the communication between browser and web server is encrypted
authenticates the accessed website and adds a layer of security on data in transmit
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internet, www, intranet, extranet
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intranet : secure network that can only be accessed by that companys employees that uses the same protocol as the internet.
extranet: private network typically open to external parties such as business partners, suppliers, key customers etc.
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email protocol
Most common protocols used by emails are:
SMTP - manages outgoing emails, used for sending emails
IMAP - used to recieve emails, allows access from multiple devices
POP3 - used to recieve emails, allows you to download email from mail server, only accessible from one device.