Discuss the key functions of an operating system, and how these functions make it possible for computer applications to effectively utilize computer system resources.

Alex’s family members live in different parts of the world. they would like to discuss the wedding plans of one of their distant relatives. however, alex wants all the family members to talk to each other simultaneously so that they can make decisions quickly. which mode of internet communication should they use? a. blog b. email c. wiki d. message board e. instant messaging

In a game with three frames, where will the objects on layer 1 appear? a. next to the play area b. in the middle of the game c. behind everything else d. in front of everything else

Can someone work out the answer as it comes up in one of my computer science exams and i don't understand the cryptovariables