How are the parameters passed to and results are returned from a system call? Select one or more: a. Parameters can be passed in registers b. When there are more parameters than registers, the OS cannot pass them onto the registers without clearing up all the registers c. When there are more parameters than the registers, store the parameters in a block and pass the block address as a parameter to a register d. Parameters can be pushed on and popped off the stack by the OS e. Parameters are copied to a special register, parameter register, and they are always stored in that register f. All the options are correct How does a user application access system code within the OS? The list of steps are given below, but the order is not correct. Choose the correct order which describes the way in which the CPU gets to know what code is running 1. Kernel process a trap. The trap handler will index into jump table to find the handler for a specific system call and jump into the code Contrl is returned to the user space codefollowing the tra ivocaton 3. Mode bit is switched into kernel mode from user mode 4. Mode bit is switched from kernel mode into user mode 5. System call is made which places the system call id into a register and the trap instruction is thrown Select one: a, 5, 3, 1, 4, 2 b. 3, 4, 5, 1, 2 c. 5, 3,4,1,2 d. 5, 4, 3, 2,1 e. None of the above Drag and drop the words in the correct positions. What are the steps taken to start up a computer? When device is turned on, read Oo locate 2.it then finds theand loads the into 3. It then asks the user or automatically loads the into RAM ROM Primary bootloader Master boot record Secondary bootloader RAM Kernel Primary BIOS Secondary BIOS Heap and stack memory