DRDO - Operating System 1000+ MCQ [Solved] PDF Download

1. ______________ refers to the technology in which some space in hard disk is used as an extension of main memory.
A. Cache memory
B. Paging
C. Virtual memory
D. Associative memory
Answer : C

2. 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

3. Which of the following operating system reads and reacts in actual time?
A. Quick Response System
B. Time Sharing System
C. Batch Processing System
D. Real Time System
Answer : D

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

5. To install the new font
A. Start -> setting -> font
B. Start -> control panel -> font -> install new font
C. Start -> setting -> control panel -> font -> install new font
D. Start -> setting -> control panel -> font
Answer : C

6. Windows 2000 supports -------------- type of file system
A. NTFS
B. EFS
C. FEFS
D. EFFS
Answer : A

7. 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

8. 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

9. The Bankers algorithm is used
A. to prevent deadlock
B. to rectify deadlock
C. to detect deadlock
D. to slove deadlock
Answer : A

10. ______________ are popular way to improve application through parallelism.
A. Processes
B. Threads
C. Context switching
D. none of these
Answer : B

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

12. ______________is a mechanism the prevents two or more processes from accessing a shared resource simultaneously.
A. Livelock
B. Preemption
C. Semaphore
D. either or
Answer : C

13. 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

14. One of the wonderful things about UNIX is its ___________names.
A. Unlimited path
B. Unlimited directory
C. Limited path
D. Limited file
Answer : A

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

16. 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

17. Underlined text, such as text and folder names is referred to as
A. Hyperlink
B. Menu
C. Source drive
D. None of these
Answer : A

18. 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

19. 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

20. The primary purpose of an operating system is a …
A. To allow people to use the computer
B. To make the most efficient use of computer hardware
C. To make computer easier to use
D. To keep system programmer employed
Answer : B

21. 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

22. Having data belonging to two independent processes in the same page is called____________.
A. Buffering
B. Blocking
C. Message-passing
D. False sharing
Answer : D

23. The two sub systems of user mode layer of windows 2000 are _________ and __________
A. excel, executive
B. environment, integral
C. orbit , kernel
D. Kernel , executive
Answer : B

24. 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

25. The ___ contains commands associated with the My Computer window
A. Start menu
B. Standard menu
C. System menu
D. None of the above
Answer : C

26. When a child dies, it sends a _______________signal to its parent.
A. SIGCHLD
B. EDEADLK
C. WNOHANG
D. SEDECHLD
Answer : A

27. _______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

28. _____________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

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

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

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

32. ______________ occurs when multiple processes or threads read and write data items so that the final result depends on the order of execution of instructions in the multiple processes.
A. Race condition
B. Mutual exclusion
C. Exception
D. Interrupt
Answer : A

33. When copying more than one file at a time, you must specify an existing directory as the ___________
A. Source
B. Sub directory
C. Destination.
D. Path name
Answer : C

34. ___________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

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

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

37. 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

38. ______________approach simplifies debugging and system verification.
A. Kernel
B. Layered
C. Extended
D. Virtual machine
Answer : B

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

40. The essential difference between an operating system like Linux and one like Windows is that
A. Linux is a proprietary whereas Windows is not
B. Windows can run with an Intel processor, whereas Linux cannot
C. There are multiple versions of Linux, but only one version of Windows
D. Any programmer can modify Linux code which is not permitted with Windows
Answer : D

41. SRM stands for
A. Security Resource Manager
B. Secret Resource Manager
C. Security Reference Monitor
D. Security Reference Manual
Answer : C

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

43. 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

44. 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

45. 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

46. Which components appear in the initial windows start up display?
A. Dialog box
B. Task bar
C. Start menu
D. All of the above
Answer : B

47. 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

48. _______________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

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

50. A standard UNIX system includes a set of ___________ and a set of ___________.
A. Commands ,files
B. Libraries, Applications
C. Libraries, files
D. Files, Applications
Answer : B