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Quizzes

Operating System(Quiz 1)

Date January 28, 2022

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Question 1 of 40

1. Question
The main memory of the computer
- Controls the operations of computer.
- Performs data processing functions.
- Stores data and programs.
- None of these.
Correct

Incorrect
Question 2 of 40

2. Question
Program counter (PC) contains
- Address of an instruction to be fetched
- Instructions most recently fetched
- Data to be written into memory
- Data to be read from memory
Correct

Incorrect
Question 3 of 40

3. Question
MAR (memory address register)
- Contains data to be written into memory.
- Contains data to be read from memory.
- Specifies location in memory for next read/or writer.
- Contains address of next instruction to be fetched.
Correct

Incorrect
Question 4 of 40

4. Question
IR (Instruction register)
- Contains the address of an instruction to be fetched.
- Contains the instruction most recently fetched
- Specifies memory addresses.
- None of these.
Correct

Incorrect
Question 5 of 40

5. Question
Which of the following is not an address register?
- Index register
- Segment pointer
- Stack pointer
- Data register.
Correct

Incorrect
Question 6 of 40

6. Question
Following is not the state of Five-State process model
- Ready
- Running
- Not Running
- New.
Correct

Incorrect
Question 7 of 40

7. Question
Memory table is used
- To allocate main memory to processes
- To allocate secondary memory to processes
- To manage virtual memory
- A, B and C are true.
Correct

Incorrect
Question 8 of 40

8. Question
I/O tables are used
- To assign I/O devices of computer
- To manage I/O devices of computer system
- A and B both true
- A and B both false.
Correct

Incorrect
Question 9 of 40

9. Question
The operating system control tables maintains file table, because
- These tables manage I/O devices and channels of the computer system.
- These tables provide information about the existence of files, their location on secondary memory and their current status.
- These tables provide information to manage process.
- None of these.
Correct

Incorrect
Question 10 of 40

10. Question
Processor in computer
- Controls the operations of the computer/ processes data functions.
- Stores data and program.
- Moves data between computer and its external environment.
- None of these.
Correct

Incorrect
Question 11 of 40

11. Question
Memory buffer register (MBR) contains
- Data that is to be written into memory
- A particular I/O device.
- Exchange data between I/O module and the processor.
- The instruction most recently fetched.
Correct

Incorrect
Question 12 of 40

12. Question
I/O modules move data
- Between external environment and computer.
- In the computer main memory.
- In Processors
- None of these.
Correct

Incorrect
Question 13 of 40

13. Question
I/O OBR (I/O Buffer register) is
- Used for the exchange of data between an I/O module and the processor.
- Specifies particular I/O device.
- (A) and (B) both true.
- (A) and (B) both false.
Correct

Incorrect
Question 14 of 40

14. Question
User-visible register
- Enables machine language programmer to minimize main memory reference by optimizing register use.
- Enables assembly language programmer to minimize main memory reference by optimizing register use.
- A and B both true.
- A and B both false.
Correct

Incorrect
Question 15 of 40

15. Question
The operations of the processor are supervised by
- Control and Status register
- Data register.
- Address register.
Correct

Incorrect
Question 16 of 40

16. Question
User-Visible register Which of the following do not support GUI (Graphical User Interface)
- DOS
- WINDOWS
- Linux
- None of these.
Correct

Incorrect
Question 17 of 40

17. Question
In the given operating system match the correct

(i) Thread (ii) Process

(A) The unit of resource

(B) The unit of dispatching
- (i) A and (ii) B
- (i) B and (ii) A
- (i) A, B
- (ii) A, B.
Correct

Incorrect
Question 18 of 40

18. Question
The MS-DOS an operating system supports
- Single user process and multiple threads
- Multiple user process and single thread
- Single user process and single thread
- Multiple user processes and multiple threads.
Correct

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Question 19 of 40

19. Question
The UNIX, an operating system supports
- Multiple user processes and single thread per process.
- Multiple user processes and multiple threads per process.
- Single user process and single thread per process.
- Single user process and multiple threads per process.
Correct

Incorrect
Question 20 of 40

20. Question
The Java run time environment is an example of
- Single user process with multiple threads
- Multiple user processes with single thread per process.
- Multiple user processes with multiple threads per process.
- None of these.
Correct

Incorrect
Question 21 of 40

21. Question
The Windows 2000, operating system supports
- Multiple user processes with single thread per process.
- Multiple processes with multiple thread per process.
- Single process with single thread.
- Single process with multiple threads.
Correct

Incorrect
Question 22 of 40

22. Question
In the pure User Level Threads (ULT)
- Thread management is done by application,
- Thread management is done by kernel,
- Kernel is not aware of the existence of thread,
- Application program interface (API) to the kernel thread
- i, iii are true
- i, ii and iii are true
- All are false
- None of these are true
Correct

Incorrect
Question 23 of 40

23. Question
The Window 2000 (W2K) and Linux are the example of
- User Level Thread (ULT)
- Kernel Level Thread (KLT)
- A and B both
- None of these.
Correct

Incorrect
Question 24 of 40

24. Question
The following is not an advantage of User Level Threads (ULT).
- Thread switching does not requires kernel mode privileges because all of the thread management are within the user address space of a single process.
- Here scheduling can be application specific.
- ULT can be run an any operating system.
- When ULT executes a system call, not only that thread blocked, but all of the threads within the process are blocked.
Correct

Incorrect
Question 25 of 40

25. Question
The Linux operating system supports
- Single thread per process and single process.
- Multiple thread per process and single process.
- Single thread per process and multiple processes.
- Multiple thread per process and multiple processes.
Correct

Incorrect
Question 26 of 40

26. Question
The Vector and array processors fall into
- Single Instruction Single Data (SIS(D) stream
- Single Instruction Multiple Data (SIM(D) stream.
- Multiple Instruction Single Data (MIS(D) stream.
- Multiple Instruction Multiple Data (MIM(D) system.
Correct

Incorrect
Question 27 of 40

27. Question
In cluster
- Computers communicate with each other’s via fixed paths or via some network facilities
- Computer communicates with each other’s via a shared memory.
- Both (A) and (B)
- None of these.
Correct

Incorrect
Question 28 of 40

28. Question
The cluster is a case of
- Distributed memory
- Shared memory
- Master/slave architecture
- Symmetric multi processor.
Correct

Incorrect
Question 29 of 40

29. Question
The master/slave architecture is an example of
- Distributed memory processing
- Shared memory processing
- Symmetric multi processing
- None of these.
Correct

Incorrect
Question 30 of 40

30. Question
I/O modules in computer
- Controls the operation of the computer.
- Stores data and program.
- Move data between the computer and external environment.
- Provides communication among processors and main memory.
Correct

Incorrect
Question 31 of 40

31. Question
Instruction register contains
- The address of an instruction to be fetched.
- The instructions most recently fetched.
- The data to be written into memory.
- The data to be read from memory.
Correct

Incorrect
Question 32 of 40

32. Question
The following

1)Start 2)Fetch next instruction

3)Execute Instruction 4)Halt

represents
- Instruction cycle with interrupt
- Instruction cycle without interrupt
- Instruction cycle with two interrupts
- None of these.
Correct

Incorrect
Question 33 of 40

33. Question
Instruction processing consists of
- Fetch cycle only
- Execution cycle only
- Fetch and Execution cycle both
- None of these.
Correct

Incorrect
Question 34 of 40

34. Question
Operating System is
- Software
- Hardware
- Software and Hardware both
- None of these.
Correct

Incorrect
Question 35 of 40

35. Question
The concept used to support multi programming environment on a computer is
- Virtual memory
- Hierarchy of physical memory
- Display of multiple windows
- None the above.
Correct

Incorrect
Question 36 of 40

36. Question
Which combination of the following features will suffice to characterize an OS as a multi programmed OS ?
- More than one program may be loaded into main memory at the same time for execution.
- If a program waits for certain events such as I/O, another program is immediately scheduled for
- If the execution of a program terminates, another program is immediately scheduled for
- (i) only
- (ii) and (iii)
- (i) and (iii)
- (i), (ii) and (iii).
Correct

Incorrect
Question 37 of 40

37. Question
Turnaround time is defined as
- Delay between job submission and job completion
- A waiting time
- Both (A) and (B) above
- None of these
Correct

Incorrect
Question 38 of 40

38. Question
The only state transition initiated by the user process itself in an operating system is
- Block
- Timer run out
- Dispatch
- Wake up
Correct

Incorrect
Question 39 of 40

39. Question
Window 98 is a
- Single user system
- Multi user system
- Single tasking system
- None of these.
Correct

Incorrect
Question 40 of 40

40. Question
OS/390 is a
- Single user system
- Multi user system
- Single tasking system
- None of these.
Correct

Incorrect

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Abdul Rehman

January 28, 2022

January 29, 2022

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