True or false

5 Multiprogramming and timesharing are one and the same concept, in that, both aims at a more efficient utilization of the same computer system resource - the main memory Pipes could be blocking or non-blocking, full duplex or half-duplex, but they can only be message- boundary nonpreserving (and not message-boundary preserving 6 7 At the time of creation, a process has access to the standard files: stdin, stdout and stderr. But these 8 The exec family of system calls is used to overlay one process with another. Thus, the only way to get 9 With fread0 (fwrite)), we typically read (or write) one element of an array of data structures ata 10 The operating system and other system programs operate in kernel (protected) mode, while all other 11 A zombie process is a major problem in operating systems, since a zombie process consumes system 12 The system calls wait0 and waitpid) are similar in the sense that both of them can be used to wait for standard files can be redirected to other files in the course of program execution. a child process to perform a different task from the parent is by use of an exec call. time. However, we can actually read (write) multiple elements with one call to fread) (fwrite0) programs operate in user mode resources, and the zombie cannot be removed from the system a process. Therefore, one can always be used in place of the other