One difference between multi-tasking using fork() versus using threads is that: a. inter-process communication between threads is a lot faster than between fork()ed children because context switching is faster.
b. inter-processor communications between forked children is not needed.
c. inter-process communication between forked children is a lot faster than between threads because context switching is faster.

a local network will allow everyone in the office to share the printer.

the major difference between the two is the objective and the reward of the game. candy crush has a puzzle theme with the objective of meeting a specific quota of points or objects, you are able to gain access to the next level and compete with peers on the process. on duolingo the objective is rather different, you are given sets of questions for you to answer for you to move to the next level and as for the reward, you are able to learn available language as this is an app developed to teach the user about other languages.