I think that the answer is packets.
System software is a type of computer program that is designed to run a computer’s hardware and application programs.
Generalized software refers to software designed to read, process and write data with the help of functions performing specific audit routines and with self-made macros.
Explanation:
The second for loop does 1 of 4 iterations for every 1 of 5 iterations of the parent loop. meaning it is 4 x 5 which is 20.