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






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






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






4. 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






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






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






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






8. Removes the last element from the array pop






9. Sort and array alphabetically






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






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






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






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






14. Returns the length of the string including escape sequences






15. ________ in perl - can be scalar array or hash context - tells the interpreter what you are looking for (Ex: "$arrayname[$index_number]")






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






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






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






19. 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






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






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






22. Delete the hash entry with the key given






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






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






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






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






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






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






29. To include modules in perl






30. 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


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






32. Arrays can be assigned or read in _________






33. In arrays elements need not be __________






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






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






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






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






38. Remove trailing newline from each element in the array






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






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






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






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






43. Removes trailing newline






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






45. Reverses the elements of the array






46. _________ in perl - An associative array






47. Stores information about the current users environment. You can print this from the command line using printenv






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






49. To write to a filehandle






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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