Test your basic knowledge |

Perl Programming

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The use of "if" "if-else" and "if-elsif-else"






2. Reverses the elements of the array






3. Regular __________: * - 0 or more characters - + - 1 or more characters - ? - 0 or 1 characters






4. The variable that provides the last index of an array






5. _________ of scalar variables in perl - using "=" - Ex: $myVariable = 5;






6. Returns all of the values of the hash as an array






7. Returns a copy of the string as all lower case






8. To get rid of the ________ in $line you could now chomp() (Ex: chomp($line);)






9. Common ________: pop(@array) - push(@array, $new Value) - shift(@array) - unshift(@array, $newValue) - sort(@array) - reverse(@array)






10. A special system variable used to pass arguments to script






11. The _______ in perl: - used to execute an external command - will output results of command to terminal - returns the exit status of the program that ran - use this for commands that you dont care about SAVING the output to a variable






12. _________ in perl - Singular variable - starts with "$" - Number or characer or string- Perl does automatic type conversion of these






13. Sort and array alphabetically






14. _________ @arrayName) returns the size of the array






15. To write to a filehandle






16. scalar(@arrayName) returns the ______ of the array names






17. Add a new element to the from of the array with the value $newwValue






18. Assignment of hash variables in perl (when oringally defining the hash)






19. The use of ______ in perl - Documenting code - Created by placing a "#" on a line. - are not multi-line






20. Removes trailing newline






21. Returns a two element ray of the next key value pair; resultArray[0] is the key resultArray[1] is the value






22. Does the hash key with "keyName" exists






23. Common ________: keys(%hash) - values(%hash) - each(%hash) - delete($hash{keyName}) - exists($hash{keyName}) - reverse(%hash)






24. Returns a copy of the string as all upper case






25. The two primary methods of executing _______ in perl: - system("command args") - - `command args`






26. Remove trailing newline from each element in the array






27. $#arrayName returns the value of the ______ of the array (NOT the data stored in that array element)






28. Swap keys for values and values for keys. Will cause issues if there are multiple hash entries with the same value






29. Join the elements of the array seperating the elements with the ':' character

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


30. Returns all of the keys of the hash as an array






31. Arrays can be assigned or read in _________






32. In arrays elements need not be __________






33. ________ in perl - A collection of data (static data or scalar variables or arrays or hashes can all be stored in an array element)






34. To include modules in perl






35. In perl the _______ will recognize syntax errors and halt execution BEFORE it begins - and will output statements; it does not understand and the line which it encountered the error on






36. Common ___________: substr($string, $start, $numchars); - length($string) - lc($string) - uc($string) - chomp($string) - chomp(@string) - join(':", @string) - split(/\s/, $string) - lcfirst($string) - ucfirst($string)






37. < - > - == - <= - >= - !=






38. Explain how to read a line from a file handle






39. The two phases of creating a PERL program _______ - Execution






40. Returns a copy of the string with the first letter upper case






41. Removes the first element of the array shift






42. Modules in perl - Synonymous with header files in C - Collection of ______ and variables that may be used in your program






43. Regular ____________: w - alphanumeric word including underscor - d - digits 0-9 - s any whitespace - . - any character






44. Delete the hash entry with the key given






45. Returns the sub string starting at index $startindex and ending after $numchars chars in the string $string






46. The open() statement in perl: open(________, file_mode, "filename.txt")






47. Adds a new element to end of the array with value $newValue






48. eq - ne - lt - le - gt - ge






49. Returns a copy of the string with the first letter lower case






50. Removes the last element from the array pop







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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