Tables in second normal form (2nf) . select the correct answer to fill in the gap.
a. have a composite key.
b. have all non-key fields depend on the whole primary key.
c. have all non-key fields depend on part of the primary key.
d. have no dependencies between non-key fields and the primary key.

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