Random-access memory (ram) is able to quickly access data because it is arranged in which of the following configurations?
1. a three-dimensional grid consisting of rows, columns, and tiers of memory cells
2. a one-dimensional grid consisting of one long row of memory cells
3. a two-dimensional grid consisting of rows and columns of memory cells
4. a one-dimensional grid consisting of one long column of memory cells

What is wi-fi infrastructure? a metropolitan area network that uses radio signals to transmit and receive data a communications technology aimed at providing high-speed wireless data over metropolitan area networks a means by which portable devices can connect wirelessly to a local area network, using access points that send and receive data via radio waves includes the inner workings of a wi-fi service or utility, including the signal transmitters, towers, or poles and additional equipment required to send out a wi-fi signal