1000+ Operating System Multiple Choice Question Answer [Solved]

1. Which of the following is/are external commands?
A. Edit
B. Label
C. Sys
D. All of above
Answer : D

2. Bootstrapping is also known as ______
A. cold-hot boot
B. hot boot
C. hot strap
D. cold boot
Answer : D

3. IPC stands for _________
A. Integrated parallel communication
B. Intermediate process call
C. Internal program call
D. Inter process communication
Answer : D

4. In case of modification an unauthorized party not only gains access to but tampers with an asset. This is an attack on ____________________.
A. availability
B. confidentiality
C. integrity
D. authenticity
Answer : C

5. In ____________ location policies a random node is polled to check its state and the task is transferred if it will not be overloaded; polling is continued until a suitable node is found.
A. Threshold
B. Shortest
C. Bidding
D. Pairing
Answer : A

6. The name services of DCE include ________
A. the Cell Directory Service
B. the Global Directory Service
C. the Global Directory Agent
D. A,B and C
Answer : D

7. All of the following are TRUE regarding virtual memory EXCEPT
A. Any amount of RAM can be allocated to virtual memory
B. The setting for the amount of hard disk drive space to allocate virtual memory can be manually change
C. This temporary storage is called the swap file or page file
D. Virtual memory is the physical space o the hard drive
Answer : A

8. ______________is responsible for allocating primary memory to processes and for assisting the programmer in loading and storing the contents of the primary memory.
A. Operating system
B. Memory manager
C. Database administrator
D. RAM
Answer : B

9. Recently deleted files are stored in
A. Taskbar
B. Desktop
C. My computer
D. Recycle bin
Answer : D

10. An orphan process is automatically inherited by the _____and becomes a _______ of this process.
A. 'init' process, father
B. 'init' process, child
C. 'initial process, father
D. 'it' process, child
Answer : B

11. In_________________ model, when a process does a release access, the contents of all the modifications are not immediately sent to other nodes but they are sent only on demand.
A. Release Consistency Model
B. Lazy Release consistency model
C. Weak Consistency Model
D. Processor Consistency Model
Answer : B

12. The operating system is the most common type of ___ Software
A. System
B. Application
C. Word processing software
D. Communication
Answer : A

13. In ________________________ each node periodically sends a message to the time server.
A. Passive Time Server Centralized Algorithm
B. Active Time Server Centralized Algorithm
C. Global Averaging Distributed Algorithms
D. Localized Averaging Distributed Algorithms
Answer : A

14. In case of good process migration mechanism, _____________ means failure of any node other than the one on which the process is running should not affect the execution of the process.
A. Robustness
B. Efficiency
C. Transparent
D. Interference
Answer : A

15. You can move a window to a different position on your screen by dragging it by its
A. Tail
B. Move handle
C. Status bar
D. Title bar
Answer : B

16. Which is the layer of a computer system between the hardware and the user program
A. Operating system
B. Operating environment
C. System environment
D. None
Answer : B

17. When you start up the computer the boot up storage at which the BIOS versions manufacturer and data are displayed on the monitor is called
A. Bootstrap
B. System configuration
C. Power on self test (POST)
D. Kernel loading
Answer : C

18. The command used to create logical drive for specific location of disk
A. Format
B. Fdisk
C. Subst
D. All of the above
Answer : C

19. A process is _________________
A. program in main memory
B. Program in cache memory
C. program in secondary storage
D. program in execution
Answer : D

20. Initialization of I/O devices is part of the_________.
A. CPU
B. MSDOS
C. UNIX kernel
D. None of the above
Answer : C

21. The ______________ unpacks the call receipt messages from local RPC Runtime and makes a perfect local call to invoke the appropriate procedure in the server.
A. server Stub
B. server
C. client
D. client stub
Answer : A

22. What is the function of adio button?
A. To select multiple option
B. To select single option
C. To select all option
D. All of above
Answer : B

23. A bar that inform you the available options in your computer, opened applications, background running applications and can be used to switch between applications quickly is
A. Menu bar
B. Tool bar
C. Status bar
D. Task bar
Answer : D

24. Identify the server:
This type of server generally remains in existence indefinitely. It is shared by many clients. Servers of this type are created and installed before the clients use them.
A. Instance-per-call-servers
B. Persistent Servers
C. Non-Persistent Servers
D. Semantic server
Answer : B

25. A process control block contains varies attributes required by _____________ to control a process.
A. RAM
B. virtual memory
C. BIOS
D. Operating System
Answer : D

26. The algorithm should be scalable i.e. _____________.
A. The system should not enter a state in which nodes spend all their time migrating processes or exchanging control messages without doing any useful work.
B. The system should be able to handle small and large networked systems.
C. The algorithm should not be affected by the crash of one or more nodes in the system.
D. The process assignment decisions should be based on the current load of the system and not on some fixed static policy.
Answer : B

27. Find out the characteristics of System-oriented names:
A. They are large integers or bit strings.
B. They are of the same size
C. Generally shorter than human-oriented names and are easy for manipulations like hashing, sorting and so on.
D. All A, B, C
Answer : D

28. _______refers to the block size of the DSM system, i.e. to the units of sharing and the unit of data transfer across the network when a network block fault occurs.
A. Granularity
B. Coherence
C. Abstraction
D. Synchronization
Answer : A

29. Which of the following does not occur during the power-on-self-test (POST)?
A. The scandisk utility begins to run
B. The video card and video memory are tested
C. The BIOS identification process occurs
D. Memory chip are checked to ensure that they are working properly
Answer : A

30. What is dispatch latency?
A. The time taken by the dispatcher to stop one process and start another
B. The whole time taken by all processor
C. The time taken by the processor to write a file into disk
D. None of Above
Answer : A

31. Most accurate global time is based on oscillations of the ______________
A. Cesium-130 atom
B. Cesium-133 atom
C. Cesium-136 atom
D. Cesium-139 atom
Answer : B

32. _____________typically contains temporary data such as subroutine parameter, return address, and temporary variables.
A. Current value of Program Counter
B. Value of the variables
C. The process stack
D. A data section
Answer : C

33. The primary purpose of an operating system is:
A. To allow people to use the computer,
B. To make the most efficient use of the computer hardware
C. To make computers easier to use
D. To keep systems programmers employed
Answer : B

34. Transparent RPC mechanism refers to :
A. Existance of multuple computer visible and a provide a single system image to its users.
B. It runs the program transparently.
C. It is a technique to shift the program to other computer.
D. It is technique in which local procedures and remote procedures are indistinguishable to programmers.
Answer : D

35. Fsck conducts a check in _____ phases
A. One
B. Two
C. Five
D. Eight
Answer : C

36. Whenever you move a directory from one location to another
A. The directory is moved the source file is not moved
B. All the subdirectory inside that directory are moved
C. All files inside the directory are moved
D. Both b and c
Answer : A

37. PVM stands for
A. Parallel Virtual Machine
B. Parallel Virtual Message
C. Process Virtual Machine
D. Process Virtual Monitor
Answer : A

38. Which of the following is drop down list?
A. Combo box
B. List
C. Text area
D. None
Answer : A

39. An operating system version designed for use with a media center PC is Microsoft Windows XP
A. Media center edition
B. Home edition
C. Tablet PC edition
D. None of above
Answer : A

40. Process migration involves__________________
A. Selection of a process to be migrated
B. Selection of destination system or node
C. Actual transfer of the selected process to the destination system or node
D. All A, B, C
Answer : D

41. Creation of a semaphore set is done using the _______system call.
A. semget()
B. semsget()
C. mknod()
D. sempget()
Answer : A

42. In layered approach each layer uses the functions and services of ------------------
A. kernel
B. lower-level layers
C. higher-level layers
D. all of these
Answer : B

43. In _______, if a processor writes the value 100 to the memory location x, this write operation will only change the contents of its local memory and will not affect the contents of the memory of any other processor.
A. Tightly coupled systems,
B. Loosely coupled systems
C. Parallel processing systems
D. File management system
Answer : B

44. In the case of____________ , changes to an open file are only locally visible.
A. session semantics
B. immutable files
C. atomic transactions
D. None of the above.
Answer : A

45. _________, as a feature of good distributed file system, clients should be able to continue working if a file server crashes. Likewise, data must not be lost and a restarted file server must be able to recover to a valid state.
A. Scalability
B. Reliability
C. Flexibility
D. Fault tolerance
Answer : D

46. Objects location is found by _________________
A. Broadcasting
B. Encoding Location of objects within UID
C. Searching creator node first and then broadcasting
D. All A, B, C
Answer : D

47. Which of the following is suitable after you install new drivers?
A. Hibernate
B. Sleep
C. Restart
D. Shut Down
Answer : C

48. The Basic Input Output System (BIOS) resides in
A. RAM
B. ROM
C. The CPU
D. Memory Cache
Answer : B

49. Which components appear in the initial Windows start up display?
A. Start menu
B. Dialog boxes
C. Taskbar
D. All of above
Answer : C

50. A _______________in a distributed system is a string of bits or characters that is used to refer to an entity.
A. name
B. attribute
C. identifiers
D. addresses
Answer : A