Choose the correct statement about the UNIX family of operating systems:

a. Because files can be shared across fork() and exec() calls, I/O redirection can be done via files
b. Because files cannot be shared across an exec() call, I/O redirection is done via pipes, sockets, etc.
c. Because files cannot be shared across a fork() call, I/O redirection is done via pipes, sockets, etc.

Hassan is writing his master’s thesis, which is a thirty-page document. he received some feedback from his professor in the form of comments, but does not see where the comments are. what is the fastest way for hassan to find the feedback?

Why would a programmer use the logical operator and in an if statement? a: when an action is to be taken that requires both conditions to be falseb: when an action is to be taken that requires both conditions to be truec: when an action is to be taken that requires the first condition to be falsed: when an action is to be taken that requires the second condition to be truei took the test and the answer is b.

Which of these is most responsible for differences between the twentieth century to the twenty-first century?