1000+ Operating System Multiple Choice Question Answer [Solved]

1. 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

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

3. ____________ file system allows sharing in multiple different locations grouped under one folder.
A. Direct
B. distributed
C. sequential
D. parallel
Answer : B

4. A process is ____________________
A. A program in Execution.
B. An asynchronous activity.
C. The 'dispatchable' unit.
D. All A, B, C
Answer : D

5. _____________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

6. ___________variable is not automatically created on all UNIX systems but is used by so many programs that it is considered a standard environment variable.
A. IFS
B. MAIL
C. TERM
D. PATH
Answer : C

7. Which of the following is not essential to shut down your computer?
A. XCOPY
B. Edit
C. Sys
D. None of the above
Answer : D

8. Because the I/O devices are not synchronized with the CPU, some information must be exchanged between the CPU and the device to ensure that the data is received reliably. This interaction between the CPU and an I/O device is usually referred to as ____________
A. polling
B. arbitration
C. handshaking
D. interrupting
Answer : C

9. 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

10. _______________refers to a strategy where whenever a resource is requested, it is only granted if it cannot result in deadlock.
A. Deadlock Prevention
B. Livelock
C. Deadlock avoidance
D. none of these
Answer : C

11. In case of ____________________transparency a file can transparently move to another server.
A. Location
B. Migration
C. Replication
D. Concurrency
Answer : B

12. 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

13. 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

14. 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

15. 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

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

17. An unauthorized party inserts counterfeit objects into the system is called_________________
A. interruption
B. interception
C. fabrication
D. modification
Answer : C

18. A _____________is a collection of processors that do not share memory, peripheral devices,or a clock.
A. Computer system
B. distributed system
C. network
D. None of the above
Answer : B

19. 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

20. 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

21. A program to be executed must be in ---------------
A. main memory
B. secondary memory
C. virtual memory
D. Read only memory
Answer : A

22. _______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

23. The early ARPAnet is an example of a distributed computing system based on the ________________.
A. Minicomputer model
B. Workstation model
C. Hybrid model
D. Processor pool model
Answer : A

24. _________, 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

25. An option commonly takes the form of a _____followed by __________characters.
A. dot, one or more
B. dash, only one
C. dash, one or more
D. dot,only two
Answer : C

26. Which buffering strategy is used for implementing synchronous communication?
A. Single message buffer
B. Unbounded - Capacity buffer
C. Finite-Bound Buffer
D. All can be used.
Answer : A

27. BSD stands for_____________________
A. Basic Software Division
B. Berkeley Software Distribution
C. British Software Distribution
D. Berkeley Software data
Answer : B

28. ______________ selects a process from among the ready processes to execute on the CPU.
A. CPU Scheduler
B. Loader
C. Dispatcher
D. Compiler
Answer : A

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

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

31. _______________occurs when two or more execution flows are able to run simultaneously.
A. Deadlock
B. Concurrency
C. race condition
D. interrupt
Answer : B

32. When resources have multiple instances ________ is used for deadlock Avoidance.
A. Bankers algorithm
B. Resource Allocation Graph
C. semaphores
D. all of these
Answer : A

33. A solution to starvation is _____________.
A. segmentation
B. Aging
C. Paging
D. virtual memory
Answer : B

34. __ is the program run on a computer when the computer boots up
A. System software
B. Operating system
C. System operations
D. None
Answer : B

35. A sequence of instructions telling the computer what to do is called a_____________
A. program
B. language
C. translator
D. package
Answer : A

36. 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

37. Which of the following is an essential file of a MS-DOS boot disk?
A. COMMANCOM
B. START.COM
C. VER.COM
D. TREE.COM
Answer : A

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

39. Which command is used to display the contents of the text file of DOS?
A. Copy
B. Copy con
C. Dir
D. Type
Answer : D

40. 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

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

42. Choose the correct statement from the following.
A. In computer terminology, variables are symbols which stand for some value.
B. An alternative method for executing the commands in the file backup is to make the file as directory.
C. The restricted shell gives more control to the system administrator and restricts the options of the user.
D. The decision making done by computer programs is in the form of conditional execution.
Answer : C

43. 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

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

45. The find command is different from most UNIX commands in that each of the argument expressions following the beginning path name is considered a _____________
A. action expression
B. Boolean expression.
C. Boolean constant
D. Search qualifiers
Answer : B

46. 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

47. When a peripheral device needs immediate attention from the operating system, it generates a(n)
A. Page file
B. Spool
C. Stack
D. Interrupt
Answer : D

48. A shared memory segment first needs to be allocated (create, using the__________ system call.
A. semget()
B. msgrcv()
C. shmget()
D. mknod()
Answer : C

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. __________ deals with when a modified page should be written out to secondary memory.
A. Cleaning policy
B. Fetch policy
C. Frame locking
D. None
Answer : A