How can access rights and permission could be used to protect computer systems, files and folders

depends on what software you are using. google docs or microsoft word or other?

well you didnt give us any options it looks like so im going to go with because cash cant be traced.

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.