Which two items describe OS in abstraction?

1. Memory Management

2. File Management

3. Resource Allocator

4. User Interface

5. Control Program

6. Device Driver

Which two items describe OS in abstraction? 1. Memory Management 2. File Management 3. Resource Allocator 4. User Interface 5. Control Program 6. Device Driver a. 1,2 O b. 3,4 O c. 3,5 d. 2,6 QUESTION 2 Which of the following 4 layers belong to a computer system? 1, users 2. applications 3. system and application programs 4. hardware 5. os 6. compilers 7. Other Machines 8. device drivers O 1, 2, 6,7 1,3,4,5 1, 2, 3,8 O 2,3,6,7