What to read about the work of the Internet?

Question

Data transfer

Hello!
I'm going to a Junior PHP interview, most likely they will ask about the basic principles of the global network and client-server interaction.
Tell me what you can read on this topic, so that without going into the admin wilds, quickly refresh your knowledge?

Answer 1

For a junior, knowledge of decoding HTTP, FTP, TCP, IP will go

Answer 2

At the junior level, they are unlikely to be interested in the operation of the network below the application layer (HTTP).
In principle, it is enough to read about HTTP on the wiki (the protocol itself, headers, status codes, basic, SSL), you can read a little about DNS for development ... and in principle this is enough.
In the context of PHP, it is worth going over the documentation and understanding SAPI. In particular, you should have an idea in your head about how, for example, PHP cookies set and receive them in $_COOKIE
via client-server interaction - web api, REST, SOAP.