Race conditions can occur if two or more processes can access a shared object at the same time. Suppose there are five processes, A, B, C, D and E. Is there a race condition if all five of these are using the same critical section at whatever times they like, if no one of these processes (nor any other) is able to modify values in the critical section? How is the answer different if only one of the processes can modify values in the critical section, or is there no difference between these two cases?

When early motion pictures played in movie theaters, they were often accompanied by live organ or piano music. which of the following are the most likely reasons that this happened? (select all that apply). the music was provided to distract audience members from the loud sounds made when filmstrips were changed. the music accompanied the movies because the movies were silent and audiences were used to hearing music during plays in theaters. the music usually was played before, and sometimes after the movie, as an alternative form of entertainment. the music viewers to interpret the dramatic action in the films.