Computer Basics : What Is a Protocol?

[dsozacarol]

hi

[TheResidentEngineer]

Grandpa seems like a noob...start with the basics. Don't lie to the kids, KISS.

[happygamestvfun1]

Next up: "Computer Basics: What Is a Noob?"

[Ir0nF1st924]

@happygamestvfun1 noob (n); a noob is a person who thinks they can beat anyone but always end up getting beat themselves

[qwertyfshag]

good info

[lwanatt]

so frustrating to me how difficult it is to understand the fundamental basics of how every necessary system in a pc functions because no one ever starts at the beginning, no one around my age atleast, the way i see it i still dont understand what a protocol is because i am not able to write even the simplest example of one myself, i can imagine little exercise where one friend writes a protocol and a little message and the other person deciphers the meaning of the transmission maybe?

[bucles2000]

There is a philosophical core about information processes which allow you to make deductions at your own. Start first with a battery and swicht the voltage polarity. You will see the electrons moving back and forth. Here you have a sinusoidal wave(+ -). But if the electron always move on and stop always in one direction there is not change of polarity.Increasing the voltage means also speed electron(amperage). Moving electron in one direction in +5 volts through logical gates makes computation.

[TheResidentEngineer]

@lwanatt Simply put: Protocol is the agreed upon arrangement of ones and zeros which computers use to communicate with one another. Simple binary words with specific lengths and fields defined by the designer. The most common protocols would be internal to every computer which uses an Intel processor which boasts the majority of the world market.  Protocols have nothing to do with the port, the port is merely the agreed upon channel the computer uses certain protocols on, standards based.

[TheYouuTubeRipper]

It's not hard coded into the computer. You can have a computer without a network card and it knows nothing of protocols or TCP/IP. TCP/IP is implemented via software, usually built into the operating system's kernel and firmware tells the computer how to communicate with the network interfaces. Firmware is also software (usually written in machine code, C/C++ etc.) but it's specialized software whose purpose is as I said, to tell the OS how to communicate with the NIC.

[Shoot3r101]

So is TCP 22 a protocol?

[TheYouuTubeRipper]

TCP stands for Transmission Control Protocol and it's one of the main protocols that form the TCP/IP suite of protocols.

The TCP/IP suite is a group of literally hundreds of protocols that form a TCP/IP stack and all work together, each protocol taking care of its bit of the entire communication process.

Port 22 is part of the 1024 reserved or 'well known' ports and port 22 TCP is used for SSH (secure shell), a protocol used to allow 1 computer to securely connect to another (simlar to telnet)

[birdshitremovalcom]

Thank you - Very helpful.