The base-10 logarithm function, denoted by log 10 , computes how many times 10
can be multiplied by itself to equal a number. For example, log 10 (10) equals 1 because
10 multiplied by itself exactly once equals 10. The log 10 (100) equals 2 because 10 × 10,
or 10 multiplied by itself twice, equals 100. Computing other log 10 values is difficult,
requiring the use of a calculator. The good news is that you will not need a calculator or a
logarithm on the CCNA Wireless exam. Even so, try to suffer through the few equations
in this chapter so that you get a better understanding power comparisons and measurements