1D0-437 testing software（8 to 17） for candidates: Sep 2021 Edition

Q8. Consider the following program code:

if ("cool" =~ m/[cool]{4}/)

{

print("True ");

}

else

{

print("False ");

}

if ("cool" =~ m/[col]{4}/)

{

print("True ");

}

else

{

print("False ");

}

What is the output of this code?

A. False False

B. False True

C. True False

D. True True

Q9. Consider the following program code:

@array = ("one", "two"); push(@array, "three"); shift(@array); unshift(@array, "four"); pop(@array);

print($array[0]);

What is the output of this code?

A. one

B. two

C. three

D. four

Q10. In the context of Perl user-defined subroutines, which statement is the most accurate?

A. Variables declared using the my keyword are global in scope.

B. Variables declared using the local keyword are only available to the subroutine from which they are declared.

C. Variables declared using the my keyword are available to the calling subroutine.

D. Variable declared using the local keyword are available to subsequently called subroutines.

Q11. Which statement is the most accurate?

A. The push function adds elements to the beginning of an array.

B. The push function removes the first element in an array.

C. The pop function removes the first element in an array.

D. The pop function removes the last element in an array.

Q12. In Perl, packages are used for which task?

A. To label a program

B. To encrypt a program

C. To create new keywords

D. To define a namespace

Q13. Which line of code represents the correct syntax to establish a reference to a database handle?

A. $dbh = DBI::connect("dbi:mysql:myPhoneBook");

B. $dbh = DBD:->connect("dbi::mysql::myPhoneBook");

C. $dbh = DBD::connect("mysql:dbi:myPhoneBook");

D. $dbh = DBI->connect("dbi:mysql:myPhoneBook");

Q14. Consider the following program code:

$i = 15;

LOOP: for(; $i < 25; $i++)

{

if ($i % 2)

{

next LOOP;

}

print($i );

}

What is the result of executing this program code?

A. The code will output the following: 15 2 4 6 8 10 12 14 16 18 20 22 24

B. The code will output the following: 15 17 19 21 23 25

C. The code will fail at line 2 because $i is not initialized.

D. The code will output the following: 16 18 20 22 24

Q15. Consider the following program code: print(1 );

BEGIN { print(2 ); }

END { print(3 ); }

BEGIN { print(4 ); } END

{

package MyPackage; print(5 );

}

What is the result of executing this program code?

A. The code will output the following: 1 2 3 4 5

B. The code will output the following: 2 4 1 5 3

C. The code will output the following: 2 1 3 4 5

D. The code will output the following: 2 4 1 3

Q16. Consider the following statement:

$buffer = a string;

Also consider that a file named test.txt contains the following line of text: One line of test text.

What is the output of the following lines of code?

$file = "test.txt";

open (OUT, "<$file") || (die "cannot open $file: $!"); read(OUT, $buffer, 15, 4);

print $buffer;

A. a strOne line of test

B. a stOne line of tes

C. a strOne line of tes

D. a stOne line of test

Q17. Consider the following code:

%chars = ("a", "100", "b", "90", "c", "80");

Which one of the following choices will reverse the key/value pairing of the code?

A. reverse(%chars);

B. %chars = reverse(%chars);

C. reverse(%chars) = %chars;

D. invert(%chars);