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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
___ function is used for joining lists. |
| A. | foreach |
| B. | for |
| C. | split |
| D. | join |
| Answer» E. | |
| 2. |
___ is known as range operator. |
| A. | . . |
| B. | $1 |
| C. | $. |
| D. | $_ |
| Answer» B. $1 | |
| 3. |
The command @x=(1. .10) will assign first ten integer values to the array ‘a’. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 4. |
For deleting the elements from the right of the array ___ function is used. |
| A. | pop |
| B. | push |
| C. | queue |
| D. | shift |
| Answer» B. push | |
| 5. |
Which function can combine the functionalities of push, pop, unshift and shift? |
| A. | splice |
| B. | add |
| C. | delete |
| D. | split |
| Answer» B. add | |
| 6. |
To add elements to the right side of the array ____ function is used. |
| A. | pop |
| B. | push |
| C. | queue |
| D. | unshift |
| Answer» C. queue | |
| 7. |
File x .c has 5 lines of code. The commanddate l tee abc l sort - x. c l wc -1, displays |
| A. | 5 |
| B. | 6 |
| C. | 0 |
| D. | an error message |
| Answer» C. 0 | |
| 8. |
For looping in a list, ____ is used. |
| A. | for |
| B. | fordo |
| C. | foreach |
| D. | while |
| Answer» B. fordo | |
| 9. |
awk doesn’t use $ in evaluation or assignment of variables. |
| A. | True |
| B. | False |
| C. | may be |
| D. | Can't say |
| Answer» B. False | |
| 10. |
Which option is used for storing awk programs in a file? |
| A. | -e |
| B. | -f |
| C. | -i |
| D. | -h |
| Answer» B. -f | |
| 11. |
awk supports the use of arrays. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 12. |
Which of the following is not true about awk arrays? |
| A. | they are not expanded automatically |
| B. | they are initialized to zero or an empty string |
| C. | index can be a string also |
| D. | they are not formally defined |
| Answer» B. they are initialized to zero or an empty string | |
| 13. |
Which function is used by perl for displaying the length of a string? |
| A. | string |
| B. | len |
| C. | split |
| D. | length |
| Answer» E. | |
| 14. |
___ function returns the first occurrence of a character in a string. |
| A. | string |
| B. | index |
| C. | split |
| D. | length |
| Answer» C. split | |
| 15. |
We cannot perform sorting on columns using sort command. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 16. |
Context switch changes the process mode from |
| A. | user to kernel mode |
| B. | kernel to user mode |
| C. | kernel mode to the kernel process |
| D. | Both (a) and (b) |
| Answer» E. | |
| 17. |
awk uses _____ dimensional arrays. |
| A. | one |
| B. | two |
| C. | multi |
| D. | three |
| Answer» B. two | |
| 18. |
The ___ prefix to an array name signifies the last index of the array. |
| A. | $0 |
| B. | $# |
| C. | #$ |
| D. | $_ |
| Answer» C. #$ | |
| 19. |
Which of the following is referred to as default variable? |
| A. | $0 |
| B. | $1 |
| C. | $! |
| D. | $_ |
| Answer» E. | |
| 20. |
A user-defined variable is initialized to ____ |
| A. | zero |
| B. | zero or null string |
| C. | |
| D. | operator |
| Answer» C. | |
| 21. |
___ operator is used for selecting current line number. |
| A. | $0 |
| B. | $1 |
| C. | $. |
| D. | $_ |
| Answer» B. $1 | |
| 22. |
The printf function uses ___ for string data and ___ for numeric. |
| A. | %f, %l |
| B. | %s, %f |
| C. | %s, %d |
| D. | %s, %s |
| Answer» D. %s, %s | |
| 23. |
head -n 3 emp.lst | tr ‘[a-z]’ ‘[A-Z]’Above command will change the case of text from lower to upper. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 24. |
______ option is used for compressing multiple consecutive characters. |
| A. | -d |
| B. | -c |
| C. | -n |
| D. | -s |
| Answer» E. | |
| 25. |
The output of the following command will be:$ uniq foo1 foo2 |
| A. | erroneous |
| B. | output stored in foo2 |
| C. | concatenates both files |
| D. | process foo1 and output is stored in foo2 |
| Answer» E. | |
| 26. |
To perform context addressing, we have to enclose the pattern in ____ |
| A. | double quotes |
| B. | single quotes |
| C. | / / |
| D. | $ $ |
| Answer» D. $ $ | |
| 27. |
The following command will match the lines beginning with ‘2’.$ grep “^2” emp.lst |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 28. |
The following command will match ‘Agarwal’, ‘agarwal’ and ‘agrawal’.$ grep “[aA]g[ar][ar]wal” emp.lst |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 29. |
If there are special characters in a pattern, then we’ve to enclose them in ______ |
| A. | single quotes |
| B. | double quotes |
| C. | without any quotes |
| D. | all quotes |
| Answer» C. without any quotes | |
| 30. |
perl is ____ of grep, tr, sed and awk. |
| A. | subset |
| B. | superset |
| C. | child |
| D. | parent |
| Answer» C. child | |
| 31. |
Which of the following will be used to print lines containing ‘manager’ in emp.lst? |
| A. | awk ‘/manager/ { print }’ emp.lst |
| B. | awk ‘/manager { print }’ emp.lst |
| C. | awk ‘/manager/ { print } emp.lst |
| D. | awk ‘manager { print }’ emp.lst |
| Answer» B. awk ‘/manager { print }’ emp.lst | |
| 32. |
For deleting the elements from the left of the array ___ function is used. |
| A. | pop |
| B. | push |
| C. | queue |
| D. | shift |
| Answer» E. | |
| 33. |
To repeat a string, perl uses ___ operator. |
| A. | / |
| B. | . |
| C. | x |
| D. | \\ |
| Answer» D. \\ | |
| 34. |
____ function breaks up a string on the basis of delimiter. |
| A. | length |
| B. | substr |
| C. | system |
| D. | split |
| Answer» E. | |
| 35. |
Which of the following are concatenation operators? |
| A. | / |
| B. | . |
| C. | _ |
| D. | \\ |
| Answer» E. | |
| 36. |
The command $ sed -n ‘$p’ emp.lst will display the last line. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 37. |
Which of the following is an associative array? |
| A. | a[ ] |
| B. | arr[ ] |
| C. | envr [ ] |
| D. | ENVIRON[ ] |
| Answer» E. | |
| 38. |
We can specify filenames in command line using perl. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 39. |
The following will display :perl -e ‘print “UNIX” x 10 . “\n” ;’ |
| A. | UNIX |
| B. | UNIX 10 times |
| C. | error message |
| D. | \n |
| Answer» C. error message | |
| 40. |
____ section can be used if we’ve to print something after processing the last line. |
| A. | end |
| B. | begin |
| C. | start |
| D. | first |
| Answer» C. start | |
| 41. |
Perl also supports use of for loop in the following manner.for($i=0;$i |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» B. False | |
| 42. |
awk uses ___ operator for concatenating strings. |
| A. | > |
| B. | | |
| C. | * |
| D. | no operator available |
| Answer» E. | |
| 43. |
To add elements to the left side of the array ____ function is used. |
| A. | pop |
| B. | push |
| C. | queue |
| D. | unshift |
| Answer» E. | |
| 44. |
sqroot(x) function returns the square root of x. |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 45. |
____ section can be used if we’ve to print something before processing the first line. |
| A. | end |
| B. | begin |
| C. | start |
| D. | first |
| Answer» C. start | |
| 46. |
The following command will produce an error.$ cut -d “|” -f 1,4 emp.lst |
| A. | True |
| B. | False |
| C. | May be |
| D. | Can't say |
| Answer» C. May be | |
| 47. |
Which one of the following commands is incorrect? |
| A. | $ cut -d “|” -f 1,4 emp.lst |
| B. | $ cut -c -3 emp.lst |
| C. | $ tail -c -511 foo |
| D. | $ tail -c 500 foo |
| Answer» E. | |
| 48. |
Which function is identical to Strstr ( )? |
| A. | Strlen ( ) |
| B. | Strchar ( ) |
| C. | Strcmp ( ) |
| D. | None of them |
| Answer» C. Strcmp ( ) | |
| 49. |
Process of breaking up a long string into words is called as |
| A. | Stroking |
| B. | Delimiters |
| C. | Tokenizing |
| D. | Parsing |
| Answer» D. Parsing | |
| 50. |
Case functions are used for |
| A. | Changing lowercase to uppercase |
| B. | Changing the length of string |
| C. | String replacement functions |
| D. | Searching functions |
| Answer» B. Changing the length of string | |