Quiznetik

Operating System Architecture | Set 5

1. The administrative information of a file is stored in

Correct : C. inode

2. The -t option to ls is used for

Correct : A. sort according to time

3. The systems internal name to file is

Correct : B. i-number

4. The first tow bytes in each directory entry are

Correct : B. connection between name of file and its contents

5. The rm command removes

Correct : A. directory entries

6. primary parts oc c comipler is in

Correct : B. /lib

7. The basic program such as who and ed resids in

Correct : C. /bin

8. various administrative fils such as password file in

Correct : D. /etc

9. Short lived files created during execution are stored in

Correct : A. /tmp

10. which of following features of UNIX may be used for IPC

Correct : D. all of these

11. In a system 5 peole are currently using VI editor, then no. of currosonding rocesses will be

Correct : B. 5

12. the command echo welcome >/dev/tty

Correct : D. a&c

13. dev/nul

Correct : D. all of these

14. The advantage of binary files over text file is

Correct : D. all of these

15. UNIX uses ls to list files in a directory. The corresponding command in MS environment is

Correct : C. dir

16. For some file the access permissions are modified to 764. Which of the following interpretation is valid:

Correct : C. every one can read, group including owner can write, owner alone can execute

17. Which directory under the root contains the information on devices

Correct : B. /dev

18. Which option makes the command to ask the user for confirmation before removing each file

Correct : A. rm-i

19. which opttion deletes all files in the current directory and all its subdirectories

Correct : B. rm-r

20. which option is used for forcing removal operation

Correct : C. rm-f

21. which option in used for deleting everything in current directory and below.

Correct : D. rm-rf

22. which command is used for renaming a file

Correct : A. mv

23. which command is used for displaying contents of a file

Correct : B. cp

24. which command is used for copying a file

Correct : C. rm

25. Which command is used to determine a type of file

Correct : B. file

26. Whcich command is used for word count

Correct : C. wc

27. The command for changing file owener is

Correct : A. chown

28. The command for changing group owner is

Correct : B. chgrp

29. The vi editor is working in which mode of following

Correct : D. all of these

30. command mode allows operation of

Correct : A. copy and delete

31. Input mode is used for

Correct : A. to show text

32. ex mode is used for

Correct : A. handling files and erform substitution

33. :x is used for

Correct : A. saving and editing

34. :q is used for

Correct : B. editing and aborting

35. :w is used for

Correct : D. saving

36. !cmd is used for

Correct : C. to runs cmd and return to command prompt

37. which of the following are archive command

Correct : D. all of these

38. which command is used for creating an archive

Correct : A. tar -c

39. whicj command is used for displaying file in archieve

Correct : C. tar-t

40. which command is used for extracting file sfrom arcieve

Correct : B. tar-x

41. Which command is used for specifying archieve arch

Correct : D. #name?

42. the file access permission types are

Correct : D. all of these

43. it --- means

Correct : A. no permission

44. it --- x means

Correct : B. execute only

45. it -w- means

Correct : C. writable only

46. it -wx means

Correct : D. writable and executable

47. it r-- means

Correct : A. readable

48. it r-x means

Correct : B. readable and executable

49. it rw- means

Correct : C. readable and writable

50. It rwx means

Correct : D. readable, writable and executable

51. The command that can be used to restrict incoming messages to a user is

Correct : B. mesg

52. The sort command in UNIX

Correct : A. used to sort a file

53. Which of the following keys is used to replace a single character with new text?

Correct : B. s

54. The tail command in UNIX

Correct : A. can be used to look at the tail or bottom of the file

55. Which command is used to change protection mode of files starting with the string emp and ending with 1,2, or 3?

Correct : B. chmod u x emp[l-3]

56. Which command will be used with vi editor to append text at end of line?

Correct : B. is

57. Which command is used to display the device name of the terminal you are using?

Correct : C. tty

58. Which command allows you to view your file 24 lines at a time ?

Correct : A. more

59. The tar command in UNIX

Correct : C. both a and b

60. Which of the following commands is used to rename a file?

Correct : C. mv

61. Which of the following calls never returns an error?

Correct : A. getpid

62. Which of the following commands is used to count the total number of lines,words and characters contained in a file?

Correct : B. wc

63. The cc command makes a total of

Correct : D. 4 pass

64. Which command will be used with vi editor to move back to the beginning of a word

Correct : A. b

65. Mounting a file system results in the loading of

Correct : B. super block

66. When a process makes a system call ,its mode changes from

Correct : A. user to kernel

67. Which of the following files contains information related to password aging?

Correct : C. password

68. Which of the following are character special files?

Correct : B. printer

69. To allow only one user to work with a particular file at a particular time ,one has to

Correct : C. locking

70. A popular boot loader used by most Linux distributions to boot Linux is called

Correct : B. lilo

71. LILO can also be used to boot other operating systems as well such as ……..

Correct : D. all of these

72. LILO can be installed to either ……..of Linux root partition.

Correct : C. both a and b

73. What is LILO ?

Correct : C. linux loader

74. LILO’s configuration file is

Correct : A. /etc/lilo.conf

75. Other boot loaders which can be used to load Linux exist:

Correct : C. both a and b

76. The kernel itself is a program that usually lives in the root partition of the UNIX filesystem. Most Linux distributions call it           and it often a symbolic link to the real kernel file which lives in “/boot”.

Correct : A. /vmlinuz

77. After the kernel is brought in from disk into main memory, it begins execution and one of the first things it does is …………

Correct : B. initialize the system’s hardware.

78. All those cryptic messages you see fly by when the Linux kernel first starts up are messages from the initializing and configuring your hardware.

Correct : C. compiled-in kernel drivers

79. The first program the kernel attempts to execute after basic system initialization is complete is called

Correct : B. init

80. init’s job after basic system initialization is

Correct : C. both a and b

81. The actual program which the Linux kernel executes as the init process can be specified via the command line parameter.

Correct : B. "init"

82. The system start-up scripts are executed by                     when the system starts up and it is these scripts which are responsible for completing the bootstrap process of the UNIX system.

Correct : A. init

83. Styles of system start-up scripts…

Correct : C. both a and b

84. All start-up scripts are typically kept in a directory named which usually lives somewhere under “/etc”

Correct : A. init.d

85. Each start-up script can usually accept at least two command line arguments:

Correct : A. start and stop

86. Steps in boot process

Correct : D. all of these

87. Hardware configuration while booting includes

Correct : D. all of these

88. Environment variables can be accessed by

Correct : C. shell scripts

89. Which of the following shell scripts looping features does not recognize the break command?

Correct : D. none of the above

90. Which of the following is not a filter?

Correct : A. cat

91. Shell functions

Correct : D. are not executed by new shell

92. The shell does the following in Unix

Correct : A. is the user interface

93. "bash" is an example of a

Correct : B. shell

94. Which of the following is not a component of a user account?

Correct : D. kernel

95. The Superuser can

Correct : D. all the above

96. Who needs to possess the superuser account?

Correct : B. system administrator

97. To use a Unix system with a GUI you need this type of window to enter Unix commands

Correct : A. terminal

98. Multiple Unix commands can be put into a file to form a program. This is called a

Correct : B. script

99. To get to the on-line reference manual, you use this command

Correct : C. man

100. The letters "bash" stand for

Correct : B. bourne again shell