Resource Protection

Embedded System

This set of Embedded Systems Multiple Choice Questions & Answers (MCQs) focuses on “Resource Protection”.

1. Which of the following unit protects the memory?
a) bus interface unit
b) execution unit
c) memory management unit
d) peripheral unit

2. Which unit protects the hardware?
a) MMU
b) hardware unit
c) bus interface unit
d) execution unit

3. Which mechanism can control the access?
a) in-situ
b) spin-lock
c) ex-situ
d) both in-situ and ex-situ

4. Which of the following is very resilient to the system crashes?
a) Windows 3.1
b) MS-DOS
c) Windows NT
d) kernel

5. Which of the following are coupled in the Windows NT for the resource protection?
a) kernel mode and user mode
b) user mode and protected mode
c) protected mode and real mode
d) virtual mode and kernel mode

6. Which of the following support multi-threaded software?
a) Windows NT
b) thread
c) process
d) task

7. Which provides a 4 Gbyte virtual address space?
a) Windows 3.1
b) MS-DOS
c) pSOS+
d) Windows NT

8. Which applications can be used with the Windows NT?
a) WIN16
b) WIN32
c) WIN4
d) WIN24

9. Which of the following has the same instruction set as that of the Windows NT?
a) WIN32
b) WIN4
c) WIN24
d) WIN16

10. Which can provide more memory than physical memory?
a) real memory
b) physical address
c) virtual memory
d) segmented address

11. Which of the following uses a swap file to provide the virtual memory?
a) windows NT
b) kernel
c) memory
d) memory management unit

12. What is the size of the swap file in Windows 3.1?
a) 25 Mbytes
b) 30 Mbytes
c) 50 Mbytes
d) 100 Mbytes

13. What is the nature of the swap file in the Windows NT?
a) static
b) dynamic
c) linear
d) non-linear

14. What limits the amount of virtual memory in Windows 3.1?
a) size of the swap file
b) nature of swap file
c) static file
d) dynamic file

15. Which of the following control and supervises the memory requirements of an operating system?
a) processor
b) physical memory manager
c) virtual memory manager
d) ram

16. What is the size of the linear address in the virtual memory manager?
a) 2 Gbytes
b) 12 Gbytes
c) 4 Gbytes
d) 16 Gbytes

17. How many modes are used to isolate the kernel and the other components of the operating system?
a) 2
b) 3
c) 4
d) 5

18. Which are the two modes used in the isolation of the kernel and the user?
a) real mode and virtual mode
b) real mode and user mode
c) user mode and kernel mode
d) kernel mode and real mode

19. Which of the following must be used to isolate the access in the user mode?
a) device driver
b) software driver
c) on-chip memory
d) peripherals

20. Which mode uses 16 higher real-time class priority levels?
a) real mode
b) user mode
c) kernel mode
d) protected mode

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