Computers. an exchange of predetermined signals between a computer and a peripheral device or another computer, made when a connection is initially established or at intervals during data transmission, in order to assure proper synchronization.
If someone is in the loop, they are part of a group of people who make decisions about important things, or they know about these decisions. If they are out of the loop, they do not make or know about important decisions.
napotkać
unexpectedly experience or be faced with (something difficult or hostile)