Question

If one kilobyte is 1,024 bytes, how many ones and zeros are needed to represent that amount of data?

Answer 1

a. 1,024

b. 1,000

c. 16,384

d. 8,192

Answer 2

1 bit = a one or a zero (1 or 0)
1 byte = 8 bits (1111000, for example)
1 kilobyte = 1024 bytes (because 1024 = \(2^{10}\))

Your question is asking you find how many bits are in one kilobyte.
Source: http://tandemtables.com/database/tables/basics/BYTES_EASY.html
Also: http://www.computerhope.com/issues/chspace.htm puts the sizes into context.