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

1. 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

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

3. 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

4. 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

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

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

7. 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

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

9. _____________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

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

12. The _____________ are based on modification of the original message in some manner, or on creation of a false message.
A. Passive attack
B. Release of message content attack
C. Traffic analysis attack
D. Active attack
Answer : D

13. ___________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

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

15. 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

16. Which one of the following statements is true?
A. The cat command cares which file it receives as input or where the input goes.
B. Relative pathnames begin with something other than the slash character
C. UNIX shells never remember their current working directory (CW.
D. The cat command interprets -X as an option character rather than a pathname.
Answer : B

17. 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

18. 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

19. 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

20. __________ 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

21. The usual su command syntax is
A. su-pwd
B. su-pd
C. su - userID
D. Sue- ID
Answer : C

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

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

24. The time taken by the Dispatcher to stop one process and start another running is known as _________________.
A. Turnaround time
B. Dispatch Latency
C. Access time
D. Response time
Answer : B

25. 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

26. 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

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

28. 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

29. You can use print manage window
A. To cancel the print job
B. To check status of files in the print queue
C. To interrupt printing
D. All of the above
Answer : D

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

31. 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

32. In Windows, start button is used to
A. Device setting
B. Run applications
C. All of above
D. Turn off the system
Answer : C

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

34. 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

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

36. 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

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

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

39. The maximum size of a write file is limited to only
A. Name of the file
B. Extension of the file
C. The amount of memory in your computer
D. All of above
Answer : C

40. ______________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

41. 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

42. ____________approach can place the data directly into the memory or take the data directly from the memory without direct intervention from the processor.
A. DMA
B. Daisy chain arbitration
C. polling
D. none of these
Answer : A

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

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. The Network Time Protocol is similar to _______________algorithm in that synchronization is also performed using time serversand an attempt is made to correct for communication latencies.
A. Banker's
B. Divide and conquer's
C. Cristians
D. Xdelta's
Answer : C

46. Which one is true for unconditional disk formatting?
A. Transfer system files after format
B. Do not check/scan surface after format
C. Destroys every byte of data on a disk by overwriting it with with blank spaces
D. All of above
Answer : C

47. 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

48. 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

49. 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

50. A two-byte integer called ____________is interpreted as an index into an array of inodes in a fixed, known location on disk.
A. an inode
B. an inumber
C. an imap
D. an imark
Answer : B