What is a port, id, host, etc.?

Question

Computer networks

Hello toaster.
Russian people do not know how to explain briefly and clearly, this is all that I understood after spending time looking for banal things in Google.
Please give a short and coherent description of what is what.
Port, host, id, poppy, node.
Can you give a clear comparison.
And then you go to the article, and there - the
port is a window in a large house in which we need to.
Not where he is, not how he is, not what he is. So it is with others. I want something capacious and short
THESES, JUST THESES
I don't have to throw articles where just to find these theses among a bunch of others, you need to read a ton of text. These are not transistors that simply cannot be explained.
Just
1 point is -
2 point is -

Answer 1

port - a virtual number to distinguish between different receivers of network packets. imagine a kmoputer as a big piece of iron from which 65536 connectors (ports) stick out. and each port is associated with a program.
there is a set of standard port numbers or you can open your port for communication with your own program.
a web server runs on the tcp80 connector, mail is received via tcp25, etc.
And that's what Wikipedia was created for.
host ID MAC node
option 2: google "computer networks for beginners" and read. if the article does not work, read the next one, there are many different stamps in the text and video, etc. you will definitely find yours.
you will slowly gain knowledge in your head - you will understand the jargon and the structure of communication and you will begin to understand network interaction.