Quiznetik

Linux and PHP | Set 1

1. /temp is a type of filesystem directory

A. True

B. False

Correct : B. False

2. Which of the following commands delete the files from the /tmp directory, issued by non-root user?

A. rmdir -rf /tmp/*

B. rm -rf /tmp/* -su

C. su -c “rm -rf /tmp/*”

D. su “rm -rf /tmp/*”

Correct : C. su -c “rm -rf /tmp/*”

3. Echo is used to Display message on screen. Which of the following options below should be used with echo to not output the trailing newline?

A. /e

B. /n

C. -n

D. both b and c

Correct : C. -n

4. The basic function of ______________ is to search files for lines (or other units of text) that contain a pattern.

A. awk

B. search

C. %awk

D. cat

Correct : A. awk

5. What is the content of /etc directory?

A. Configuration files for your system.

B. Contains the system startup scripts

C. Both a and b

D. User specific settings for programs like IRC, X etc.

Correct : C. Both a and b

6. What is the difference between linux file system and windows file system?

A. Under Linux, the various partitions are detected at boot and assigned a drive letter whereas Under windows, unless you mount a partition or a device, the system does not know of the existence of that partition or device.

B. Under Windows, the various partitions are detected at boot and assigned a drive letter whereas Under Linux, unless you mount a partition or a device, the system does not know of the existence of that partition or device.

C. Under Windows, the various partitions are detected at reboot and assigned a drive letter whereas Under Linux, unless you mount a partition or a device, the system does not know of the existence of that partition or device.

D. Under Windows, the various partitions are detected at reboot and assigned a drive letter whereas Under Linux, you mount a partition or a device.

Correct : B. Under Windows, the various partitions are detected at boot and assigned a drive letter whereas Under Linux, unless you mount a partition or a device, the system does not know of the existence of that partition or device.

7. Which of the following below is/are true for Date command?

A. It can work w/o arguments

B. It always needs an argument

C. It always need to have a+ as an argument

D. None of the above

Correct : A. It can work w/o arguments

8. What is the default number of shell commands saved in the history list of .cshrc file?

A. 200

B. 100

C. 150

D. 175

Correct : A. 200

9. mount -r is used to mount a file in read only mode

A. True

B. False

Correct : A. True

10. The advantage of using NFS rather than Samba for file sharing in Linux is

A. files saved as .tar extension

B. compressed files

C. compatibility with Windows file sharing

D. None of the above

Correct : C. compatibility with Windows file sharing

11. Which of the following supports for creating a Linux VPN (Virtual Private Network)?

A. RC2

B. 3DES

C. chap

D. NTLMv2

Correct : B. 3DES

12. Find command can search for files by

A. date

B. size

C. name

D. all of above

Correct : D. all of above

13. How can we find the current value for shell variables?

A. Set command

B. Display command

C. val command

D. Currval command

Correct : A. Set command

14. CWD is a type of shell variable

A. True

B. False

Correct : A. True

15. Which framework is provided for the programs to interchange information about Linux OS?

A. Resource Sharing Framework

B. Resource Security Framework

C. Information Sharing Framework

D. Resource Definition Framework

Correct : D. Resource Definition Framework

16. What is the difference between PATH and path?

A. PATH and path specify directories to search for commands and programs

B. Both variables always represent the same directory list

C. altering either automatically causes the other to be changed

D. All choices are correct.

Correct : D. All choices are correct.

17. How much usable space is available, when a Linux system is configured with a RAID 5 array that consists of six 20 GB hard disk drives?

A. 80

B. 100

C. 120

D. 60

Correct : C. 120

18. Which of the following below are environmental variables?

A. USER

B. HOME

C. both a and b

D. VARHOST

Correct : C. both a and b

19. Applications written to provide a GUI shell for Unix and Linux are called

A. DOS

B. x windows

C. OS/2

D. Vista

Correct : B. x windows

20. Which of the following commands can be used to check for file corruption?

A. md5sum

B. checkfile

C. cat -vet

D. tar –checksum

Correct : A. md5sum

21. Starting or restarting a computer is called

A. booting the system

B. firing the system

C. tasking the system

D. restoring the system

Correct : A. booting the system

22. This type of boot occurs when the computer is already on, and you restart it without turning off the power.

A. generic boot

B. live boot

C. warm boot

D. cold boot

Correct : C. warm boot

23. The ‘logout’ built in command is used to

A. shutdown the computer

B. logoff of the computer

C. logout the current user

D. to exit the current shell

Correct : D. to exit the current shell

24. The command ‘umask -S’

A. prints the current mask using symbolic notation

B. prints the current mask using octal numbers

C. sets the mask to 000

D. sets the mask to 777

Correct : A. prints the current mask using symbolic notation

25. Which command puts a script to sleep untill a signal is recieved?

A. sleep

B. suspend

C. disown

D. break

Correct : B. suspend

26. Which of the following below are true functionalities of shell?

A. Authenticates user

B. Interprets commands

C. Allocates time and memory to programs

D. Only a and b

Correct : B. Interprets commands

27. A process can run only in the background

A. True

B. False

Correct : B. False

28. Which of the following below are true functionalities of Kernel?

A. Allocates time and memory to programs

B. Authenticates user

C. Interprets commands

D. All choices are correct

Correct : A. Allocates time and memory to programs

29. To implement new application on IBM z/10. Which of the following options need to be considered if it to be implemented in Linux?

A. IBMz/OS outperforms Red Hat Linux in commercial workloads

B. IBMz/OS is more expensive, Linux is shareware

C. Red Hat Linux does not support all devices supported by IBMz/OS

D. z/OS is supported by IBM SupportLine, whereas Red Hat Linux can only be supported by Red Hat

Correct : C. Red Hat Linux does not support all devices supported by IBMz/OS

30. A process is identified by a unique

A. Pid

B. Id

C. processed

D. proid

Correct : A. Pid

31. Which command reduces the size of a file?

A. pzip

B. gcat

C. pgcat

D. gzip

Correct : D. gzip

32. Which of the following has greater market share of Linux SW/HW

A. Linux on z10

B. Linux HP integrity server

C. Linux on AS/400 servers locate

D. Linux on DELL Xeon

Correct : A. Linux on z10

33. Which of the following is the BEST way to set up SSH(Secure Shell) for communicating between System without needing passwords?

A. Use ssh-keygen for generating public-private keys.

B. Disable passwords on specific accounts that will use SSH.

C. Both A and B

D. None of the above

Correct : A. Use ssh-keygen for generating public-private keys.

34. Which of the following commands can be run to remove all the rules in an iptable table?

A. iptable-L

B. iptable-A

C. iptable-F

D. iptable-delete

Correct : C. iptable-F

35. Which command is used to see the online manual?

A. Man

B. manual

C. *man

D. %man

Correct : A. Man

36. The head command writes the first ____________ lines of a file to screen.

A. Five

B. Twenty

C. Ten

D. Fifteen

Correct : C. Ten

37. Which command is used to clear the screen?

A. % clear

B. clear

C. clrscr

D. either a or c

Correct : B. clear

38. Which command is used to find what is in your home directory?

A. % List

B. % Is

C. % home

D. Either a or c

Correct : B. % Is

39. Pipe symbol is represented by

A. ||

B. |

C. ^

D. $

Correct : B. |

40. What is the shortcut to the login directory?

A. shift+cd

B. cd+enter key

C. alt+ctrl+cd

D. ctrl+cd

Correct : B. cd+enter key

41. What is used to search files for specified words or patterns?

A. Less

B. Srch

C. %src

D. Grep

Correct : D. Grep

42. cd home to get back to your home-directory?

A. True

B. False

Correct : B. False

43. > symbol is used to redirect the output of a command

A. True

B. False

Correct : A. True

44. Which character is used to match exactly one character?

A. |

B. *

C. ^

D. ?

Correct : D. ?

45. The hierarchy of a series of directories branching in a user system starts from

A. home

B. root

C. /home

D. /root

Correct : C. /home

46. What PHP stands for?

A. Hypertext Preprocessor

B. Pre Hypertext Processor

C. Pre Hyper Processor

D. Pre Hypertext Process

Correct : D. Pre Hypertext Process

47. How does the identity operator === compare two values?

A. It converts them to a common compatible data type and then compares the resulting values

B. It returns True only if they are both of the same type and value

C. If the two values are strings, it performs a lexical comparison

D. It bases its comparison on the C strcmp function exclusively

Correct : A. It converts them to a common compatible data type and then compares the resulting values

48. Under what circumstance is it impossible to assign a default value to a parameter while declaring a function?

A. When the parameter is Boolean

B. When the function is being declared as a member of a class

C. When the parameter is being declared as passed by reference

D. When the function contains only one parameter

Correct : C. When the parameter is being declared as passed by reference

49. Variables always start with a ........ in PHP

A. Pond-sign

B. Yen-sign

C. Dollar-sign

D. Euro-sign

Correct : C. Dollar-sign

50. What is the value displayed when the following is executed? Assume that the code was executed using the following URL: testscript.php?c=25 <?php function process($c, $d = 25) { global $e; $retval = $c + $d - $_GET['c'] - $e; return $retval; } $e = 10; echo process(5); ?>

A. 25

B. -5

C. 10

D. 5

Correct : B. -5

51. PHP is an open source software

A. True

B. False

Correct : A. True

52. Which of the following is not valid PHP code?

A. $_10

B. ${“MyVar”}

C. &$something

D. $10_somethings

Correct : D. $10_somethings

53. What is the difference between print() and echo()?

A. print() can be used as part of an expression, while echo() can’t

B. echo() can be used in the CLI version of PHP, while print() can’t

C. print() can be used in the CLI version of PHP, while echo() can’t

D. There’s no difference: both functions print out some text!

Correct : A. print() can be used as part of an expression, while echo() can’t

54. PHP runs on different platforms (Windows, Linux, Unix, etc.)

A. True

B. False

Correct : A. True

55. Use the ___________ to delete the data inside the table, and not the table itself?

A. DEOP TABLE

B. DELETE TABLE

C. TRUNCATE TABLE

D. REMOVE TABLE

Correct : C. TRUNCATE TABLE

56. In mail($param1, $param2, $param3, $param4), the $param2 contains:

A. The message

B. The recipient

C. The header

D. The subject

Correct : D. The subject

57. Which of the following delimiter is ASP style?

A. <% %>

B. <? ?>

C. <script language=”php”></script>

D. All of the above

Correct : A. <% %>

58. What is the purpose of basename() function in PHP?

A. Returns the last accessed time of the file

B. Returns the first accessed time of the file

C. Strips of the path and returns the file name.

D. Strips of the path the returns of the folder name.

Correct : C. Strips of the path and returns the file name.

59. In PHP, fgets() is used to read a file one line at a time.

A. TRUE

B. FALSE

Correct : A. TRUE

60. Which of the following statement produce different output

A. <? echo “this is php example”; ?>

B. <P=”This is php example”;?>

C. <?php echo “This is php example”; php?>

D. <script language=”php”>print “This is php example”;</script>

Correct : C. <?php echo “This is php example”; php?>

61. Which of the following data type is compound datatype supported by PHP.

A. Array

B. String

C. Float

D. Boolean

Correct : A. Array

62. Which of the following functions in PHP do not return a timestamp?

A. time()

B. date()

C. strtotime()

D. gmmktime()

Correct : B. date()

63. Which of the following are valid float values?

A. 4.5678

B. 4

C. 7.00E+04

D. All of the above

Correct : D. All of the above

64. Which of the following type specifier is invalid in printf() functions.

A. % a

B. % b

C. % c

D. % d

Correct : A. % a

65. Transactions are used to treat sets of SQL statements atomically.

A. TRUE

B. FALSE

Correct : A. TRUE

66. How does the identity operator ===compare two values in PHP?

A. It converts them to common compatible data type and then compares the resulting values.

B. It returns True only if they are both of the same type and value

C. If the two values are strings, it performs a lexical comparison

D. It based its comparison on the C strcmp function exclusively

Correct : B. It returns True only if they are both of the same type and value

67. Which of the following is not an SQL aggregate function?

A. AVG

B. SUM

C. MIN

D. CURRENT_DATE()

Correct : D. CURRENT_DATE()

68. The _____________ statement is used to delete a table in MySQL.

A. DROP TABLE

B. DELETE TABLE

C. DEL TABLE

D. REMOVE TABLE

Correct : A. DROP TABLE

69. The ____________function parses an English textual date or time into Unix timestamp in PHP.

A. strtodate()

B. stroftime()

C. strtotime()

D. str_to_time()

Correct : C. strtotime()

70. Which function(s) in PHP computes the difference of arrays?

A. array_diff

B. diff_array

C. arrays_diff

D. diff_arrays

Correct : A. array_diff

71. ______________ Returns the time of sunrise for a given day / location in PHP.

A. datesunrise()

B. date_sunrise()

C. date-sunrise()

D. date.sunrise()

Correct : B. date_sunrise()

72. What is the difference between print() and echo() in PHP?

A. print has a return value of 1 so it can be used in expressions where as echo has a void return type

B. echo() can be used in the CLI version of PHP, while print() can’t

C. print() can be used in the CLI version of PHP, while echo() can’t

D. There’s no difference: both functions print out some text!

Correct : B. echo() can be used in the CLI version of PHP, while print() can’t

73. The ___________ function is used to read a single character from a file in PHP.

A. fgetc()

B. fgets()

C. fget()

D. fgetf()

Correct : A. fgetc()

74. In PHP, which of the following(s) count elements in an array?

A. count

B. Sizeof

C. Array_Count

D. Count_array

Correct : A. count

75. Which syntax is default syntax in PHP?

A. < ?php ?>

B. <% %>

C. < ? ?>

D. < script language="php">

Correct : A. < ?php ?>

76. Which of the following delimiter syntax is PHP's default delimiter syntax

A. <? php ?>

B. <% %>

C. <? ?>

D. <script language="php"> </script>

Correct : A. <? php ?>

77. Which of the following delimiter is default in PHP?

A. <?php ?>

B. <% %>

C. <? ?>

D. <script language="php"> </script>

Correct : A. <?php ?>

78. What is the expansion of LAMP?

A. Linux And MySQL PHP

B. Linux Apache MySQL PHP

Correct : B. Linux Apache MySQL PHP

79. Which operator is used to concatenate two strings in PHP?

A. dot operator (.)

B. plus operator (+)

Correct : A. dot operator (.)

80. Whether One-line comment begin with pound sing(#) in PHP?

A. True

B. False

Correct : A. True

81. Which of following comments is supported by PHP.

A. Single line c++ syntax - //

B. Shell syntax - #

C. Both of above

D. None of above

Correct : C. Both of above

82. What PHP stands for?

A. Hypertext Preprocessor

B. Pre Hypertext Processor

C. Pre Hyper Processor

D. PHP: Hypertext Preprocessor

Correct : D. PHP: Hypertext Preprocessor

83. There are three different kind of arrays:

A. Numeric array, String array, Multidimensional array

B. Numeric array, Associative array, Dimensional array

C. Numeric array, Associative array, Multidimensional array

D. Const array, Associative array, Multidimensional array

Correct : C. Numeric array, Associative array, Multidimensional array

84. PHP is __________________.

A. Partially cross-platform

B. Truly cross-platform

Correct : B. Truly cross-platform

85. Can we embedded directly PHP code into XHTML document?

A. FALSE

B. TRUE

Correct : B. TRUE

86. Variables always start with a ________ in PHP.

A. Pond-sign

B. Yen-sign

C. Dollar-sign

D. Euro-sign

Correct : C. Dollar-sign

87. Which of the following function is used to change the root directory in PHP?

A. choot()

B. change_root()

C. cd_root()

D. cd_r()

Correct : A. choot()

88. Which of the following tags in PHP is not a valid way to begin and end a PHP code block?

A. <?php ?>

B. <! -->

C. <? ?>

D. <script language="php"></script>

Correct : B. <! -->

89. What will the ?getdate() function returns in PHP?

A. An integer

B. A floating-point number

C. An array

D. A string

Correct : C. An array

90. What is full form of PHP?

A. PreHypertextProcessor

B. HypertextPreprocessor

C. Hypertext Postprocessor

D. PostHypertextProcessor

Correct : B. HypertextPreprocessor

91. The left association operator % is used in PHP for __________.

A. percentage

B. bitwise or

C. division

D. modulus

Correct : D. modulus

92. Which one is right in PHP?

A. <?php var_name = $value;?>

B. <?php $var_name = $value; ?>

C. <?php $var_name = value;?>

D. <?php var_name = value;?>

Correct : B. <?php $var_name = $value; ?>

93. SQL is not case sensitive. DELETE is the same as delete.

A. TRUE

B. FALSE

Correct : A. TRUE

94. Which of the following is not true regarding XForms?

A. PHP provides support for XForm

B. It can be used on PDF documents

C. The data is sent in XML format

D. The action and method parameters are defined in the body

Correct : D. The action and method parameters are defined in the body

95. You have defined three variables $to, $subject and $body to send an email. Which of the following methods would you use for sending an email?

A. mail($to,$subject,$body)

B. sendmail($to,$subject,$body)

C. mail(to,subject,body)

D. sendmail(to,subject,body)

Correct : A. mail($to,$subject,$body)

96. Which of the following are useful for method overloading?

A. __call, __get, __set

B. _get,_set,_load

C. __get,__set,__load

D. __overload

Correct : A. __call, __get, __set

97. Which of the following is a PHP resource?

A. Domxml document

B. Odbc link

C. File

D. All of the above

Correct : D. All of the above

98. Does PHP 5 support exceptions?

A. Yes

B. No

Correct : A. Yes