Question 1

Running your Perl scripts with a d switch will perform which task?

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Invoke the Perl debugger
Disable the Perl debugger
Disable breakpoints
Display a stack trace

Answer

Correct Option: A

Question 2

Which file test can be done to see if a file is a socket?

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-s
-l
-S
-k

Answer

Correct Option: A

Question 3

How can you include code from another file in your program?

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With the #include preprocessor command
Adding the file’s directory to @INC and then passing the filename to require.
Both A & B
None of the above

Answer

Correct Option: C

Question 4

What will the following statement return?

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grep(! /^ !/, @array);
Every non empty list element
Every list element that does not start with an exclamation mark.
Every list element.

Answer

Correct Option: B

Question 5

What is the default sort order in Perl?

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alphabetic
numeric
ASCII
none of the above

Answer

Correct Option: C

Question 6

Rather than using print, what is often used in Perl when formatting is important?

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printf
format
align
show

Answer

Correct Option: A

Question 7

If $string contains abcdefghijiklmdef , what will the following call return? rindex($string , "def", 11 );

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14
3
4
15

Answer

Correct Option: B

Question 8

Consider the following program code: %hash = (small => 8oz, medium => 16oz, large => 32oz); @keys = sort(keys(%hash)); for ($i = 0; $i < 3; $i++) { print($hash{$keys[$i]}\n); } What is the result of executing this program code?

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The code will fail at line 1 because a hash cannot contain both numeric and string data.
The code will execute without error but will output nothing.
The code will output the following: 32oz 16oz 8oz
The code will output the following: large medium small

Answer

Correct Option: C

Question 9

Which of the following will call a subroutine named "mom"?

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&mom
$mom
mom$
%mom%

Answer

Correct Option: A

Question 10

Which operator can be used to create private variables within a subroutine?

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native
limited
my
regional

Answer

Correct Option: C

Question 11

Within a loop, which operator jumps to the end of the loop but does not exit the loop?

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next
last
redo
leave

Answer

Correct Option: A

Question 12

To convert a timestamp into a format more readable by a user, which function should you use?

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bitwise
localtime
translate
transform

Answer

Correct Option: B

Question 13

What value do variables have before they are first assigned?

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undef
null
0
nil

Answer

Correct Option: A

Question 14

Which Perl function is used to change the name of a file?

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nameas
rename
name
now_known_as

Answer

Correct Option: B

Question 15

Which of the following commands should be used to open a filehandle named KAREN to an existing file named sw?

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open KAREN ">sw";
open KAREN, ">sw";
open "sw" KAREN;
open ">sw", KAREN;

Answer

Correct Option: B

Question 16

Which command should be used to close the filehandle KAREN?

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close KAREN "sw";
KAREN close;
close KAREN;
close &KAREN

Answer

Correct Option: C

Question 17

25 Which Perl function can be used to identify the first found occurrence of a substring?

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find
index
locate
allocate

Answer

Correct Option: B

Question 18

Which function can be used to return such information about a file as its UID, GID, CTIME, etc.?

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file
stat
info
mode

Answer

Correct Option: B

Question 19

Which modifier can be used when matching in Perl to ignore case?

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s
v
i
c

Answer

Correct Option: C

Question 20

Which function can be used to break up a string into more than one part based upon a separator?

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chop
split
divide
parse

Answer

Correct Option: B

Description: programming languages Online Quiz - 226
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: programming languages

programming languages Online Quiz - 226

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