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. Delete the hash entry with the key given






2. The purpose of {} in an "if" statement: To Define the __________ of the if statement. Unlike C the {} braces ARE REQUIRED






3. Split string into an array using spaces as delimeter






4. To write to a filehandle






5. Arrays can be assigned or read in _________






6. In arrays elements need not be __________






7. _________ in perl - An associative array






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






9. 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






10. _________ $#arrayName give value of last index available in the array. Ex an array of size 5 will have its $#arrayName = 4






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






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






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






14. The four types of loops in perl: while - until - for - ________






15. To include modules in perl






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






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






18. Remove trailing newline from each element in the array






19. The three basic ________ of the open() function: > write - >> append - < read file






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






21. Removes trailing newline






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






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






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






25. Sort and array alphabetically






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






27. Removes the first element of the array shift






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






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






30. Returns the length of the string including escape sequences






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






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






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






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






35. Reverses the elements of the array






36. Two ____________ in regular expressions: =~ Contains - !~ Does not contain






37. The __________ in perl: - uses grave marks `command args`- returns the output of the command to the variable you specify - if $output = `command arg` the output is stored all in one variable (all lines seperated by n) - if @output = `command arg` the






38. Removes the last element from the array pop






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






40. < - > - == - <= - >= - !=






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






42. Assignment of a hash variable for a single hash element






43. Does the hash key with "keyName" exists






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






45. To read an entire file into an array (one line per element)






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






47. 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


48. The use of "if" "if-else" and "if-elsif-else"






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






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