Question 1: ITrue or False if False say whyl 1- Bourne again shell is an example of a graphical user interface. 2- Windows is an example of operating systems that contain only a graphical user interface. 3- The main advantage of graphical user interfaces compared to command line interpreters is the ease of use. 4 A system program is a program that issues at least 5 system calls. are pure model (they are either layered or microkernel or 6- The program is the same as a process. 7- The two models of interprocess communication are shared memory and message passing. 8- A process is zombie if his parent terminated without invoking wait