Question

5 questions
1 what is wi - fi?
a a frequency that has multiple channels
b a wireless networking technology
c paint that acts as a shield against frequencies
d a traffic controller that directs radio waves

Explanation:

Wi - Fi is a well - known wireless networking technology that allows devices to connect to a network without the use of cables. It uses radio frequencies to transmit data. Option A is just about a frequency with channels which is not a full description. Option C is an incorrect description as Wi - Fi is not paint. Option D is also incorrect as Wi - Fi is not a traffic controller for radio waves in that sense.

Answer:

B. a wireless networking technology