Question??? Help

Please can anyone explain me about networking
I not understood :stressed:

few things I know about network is

1) data exists in the form of form of 1 & 0
2) in wire it travels from copper wire/optical fiber
3)in wireless it travels from electromagnetic waves (so we can't see the signals)
4) next I researching on OSI & TCP/IP models
I donno what is the use of these layers
5) these layers exists from Ethernet to screen
In wireless from WiFi to Mobile screen
6)and there is a protocol named TCP in transport layer I confused though it is layer or protocol
7)and there is ports for specific protocols
like http 80 & https 443
what protocols do ??
It every time changes ? TCP port is 53

8) when we browse over internet what protocols we use?

I'm not 100% sure what you are asking, can you make the post a little bit more clear? i'd be glad to help if i understood the question. are you taking a Cisco course or something?

(11-16-2016, 08:33 AM)millionandbell Wrote:

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I'm not 100% sure what you are asking, can you make the post a little bit more clear? i'd be glad to help if i understood the question. are you taking a Cisco course or something?

No course self learning


I mean what is the use of network layers

TCP/IP which is a "simplified" implementation of the theoretical OSI model. OSI was replaced by tcp/ip long time ago.
Osi had 7 layers tcp/ip have 4 layers.

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