What technology allows data to be stored in one place and be retrieved by many systems?

How can a broadcast station be received through cable and satellite systems?

The open systems interconnection (osi) reference model: defines standards for many aspects of computing and communications within a network. is a generic description for how computers use multiple layers of protocol rules to communicate across a network. defines standards for wireless local area network (wlan) communication protocols. details the advantages and disadvantages of various basic network cabling options.

Are special combinations of keys that tell a computer to perform a command. keypads multi-keys combinations shortcuts