Question 13 -- 76 The hardware/user gap is bridged by the OS or by other system software. Which of the following task does not require OS support? 1 Control the execution of a program 2 Allocate memory for a new data structure 3 Load a program into memory 4 Change the layout of a document Question 14 -- / 6 Most modern Operating Systems adopt 1 Microkernel structure 2 Layer structure 3 Modular structure Question 16 -- / 6 In a virtual machine, each program believes that it has 1 more memory than is physically available on the machine 2 multiple processors 3 another "virtual" computer to assist in its operations 4 its own memory Question 17 -- / 6 Which of the following methods are used to pass parameters to the OS? 1 Register 2. Block 3 Stack 4 All of the above 5 None of the above