Networking Protocols
NetworkHTTP protocols(Hypertext areTransfer Protocol): This is the setprotocol your web browser uses to request and receive webpages from servers. When you type a URL into your browser, it sends an HTTP request to the server, which then sends back the webpage as a response. HTTP is a "stateless" protocol, meaning each request/response pair is independent.
HTTPS (HTTP Secure): HTTPS is HTTP with an extra layer of rulessecurity. It encrypts the data exchanged between your browser and standardsthe server using SSL/TLS. This helps protect sensitive information (like passwords or credit card numbers) from being intercepted by third parties.
FTP (File Transfer Protocol): As the name suggests, FTP is used to transfer files between computers over a network. It's commonly used for uploading files to a web server. FTP establishes two connections - a command connection for sending instructions, and a data connection for actually transferring the files.
TCP (Transmission Control Protocol): TCP is all about reliable data delivery. When applications (like email clients or web browsers) send data using TCP, it establishes a connection and ensures that allowthe differentdata devicesarrives to communicate with each other.
Just as human languages like Englishintact and Spanishin havethe grammarsright thatorder. structureIf communication,any networkdata protocolsis establishlost aalong commonthe frameworkway, TCP will resend it.
IP (Internet Protocol): IP is responsible for informationaddressing exchange.
Somerouting ofdata packets across the mostinternet. importantEach and widely used protocolsdevice on the internet andhas corporatea networksunique include:
TCP/IP -address, Thewhich fundamentalis protocolused ofto send data to the internetcorrect destination. IP is an "unreliable" protocol, meaning it doesn't guarantee that definespackets howwill arrive at their destination or in the right order (that's TCP's job).
UDP (User Datagram Protocol): UDP is a simpler, faster alternative to TCP. It doesn't establish a connection or provide error checking. This makes it less reliable, but also much quicker - perfect for applications like video streaming or online gaming where a little data shouldloss beis formatted,acceptable.
SMTP addressed, transmitted, routed, and received between devices. TCP handles assembling data into packets, while IP handles addressing and routing the packets.
HTTP - The Hypertext Transfer Protocol used for web communications. HTTP works on top of TCP/IP and defines how web browsers request pages from servers and how servers transfer HTML, images, video and other content.
FTP - The File Transfer Protocol for uploading and downloading files between a client and server. Like HTTP, FTP runs on top of TCP/IP. It allows efficient and reliable file transfers.
SMTP - The (Simple Mail Transfer ProtocolProtocol): This protocol handles the sending of email. When you send an email, your email client uses SMTP to send the message to your mail server, which then uses SMTP to send it to the recipient's mail server.
SSH (Secure Shell): SSH allows you to securely connect to a remote computer over an unsecured network. It's often used forby emailsystem transmission.administrators SMTPto handlesmanage sendingservers remotely. SSH provides encrypted communication between the two machines, ensuring that sensitive commands and routingdata email messages through mail servers.
DNS - The Domain Name System that translates domain names like "linkedin.com" to IP addresses required for locating devices on a network. DNS serves as the directory for the internet.
While these provide the backbone of networking, many other application-layer protocols exist for voice over IP (VoIP), video streaming, instant messaging, file sharing, and more.
New protocols are also emerging, like QUIC that aims to speed up web transfers.
Understanding the protocols that connect our digital world can shed light on the inner workings of computer networks.
From TCP/IP providing end-to-end delivery to DNS linking domain names to devices, protocols enable the reliable flow of data.
Our hyperconnected world would notcan't be possible without these standardized languages powering communication behind the scenes.intercepted.