Question 1

Which file test can be done to see if a file has the sticky bit set on it?

technology programming languages

-s
-l
-S
-k

Answer

Correct Option: D

Question 2

Within a loop, which operator immediately ends execution of the loop?

technology programming languages

next
last
redo
leave

Answer

Correct Option: B

Question 3

You want to close the directory handle EVAN. Which of the following should you use to accomplish this?

technology programming languages

close EVAN;
closedir EVAN;
close_directory EVAN;
none of the above

Answer

Correct Option: B

Question 4

Assume that $var has the value hello . What is the value of the following sting?q (It’s time to say $var);

technology programming languages

It’s time to say $var
It’s time to say hello
None
Both

Answer

Correct Option: A

Question 5

Consider the following program code @array= (“Y”,”W”,”X”); @array=sort(@array); unshift(@array , ”Z”); print($array[0]); What is the output of this code

technology programming languages

W
X
Y
Z

Answer

Correct Option: D

Question 6

Consider the following lines of code: @array1 = ("apples", "oranges", "pears", "plums"); foreach (@array1) {print "$_\n"}; What is the result of these lines of code?

technology programming languages

applesorangespearsplums
apples oranges pears plums
apples
apples oranges pears plums

Answer

Correct Option: D

Question 7

Which function can be used to print a message to standard error, but not quit the program?

technology programming languages

warn
alert
tell
notifiy

Answer

Correct Option: A

Question 8

Suppose the variable $var has the value abc123abc . What is the value of $var after the following substitution?

technology programming languages

$var=~ s/(\d+)/ $1*2 /e ;
“abc”
It will produce error
“ABC123ABC”

Answer

Correct Option: D

Question 9

Your script has just read in a variable from the keyboard and you want to strip that variable of the newline character that came in. What operator should you use to perform this operation?

technology programming languages

tidy
trim
chomp
slim

Answer

Correct Option: C

Question 10

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

technology programming languages

-s
-l
-S
-k

Answer

Correct Option: B

Question 11

Which Perl function can be used to launch a child process to run a program?

technology programming languages

split
spin
fork
system

Answer

Correct Option: D

Question 12

Which file test can be done to see if a file exists and has a nonzero size?

technology programming languages

-s
-l
-S
-k

Answer

Correct Option: A

Question 13

Within Perl, which operator is used to change the working directory?

technology programming languages

cd
chdir
pwd
wd

Answer

Correct Option: B

Question 14

What is the value of @list at the end of the following program? #!/usr/local/bin/perl @list=(1,2.3); &testsub(*list); Sub testsub{ Local (*sublist)[email protected]_; $sublist[1] = 5; }

technology programming languages

(1,2.3)
(1,5,3)
Will produce error
(1,4,3)

Answer

Correct Option: B

Question 15

Consider the following program code: @array = (10, Masami, 10..13, Niklas); for ($i = 1; $i < $#array; $i++) { print($array[$i] ); } What is the result of executing this program code?

technology programming languages

The code will output the following: Masami 10 11 12 13
The code will output the following: 10 Masami 10 11 12 13
The code will output the following: 10 Masami 11 12 13 Niklas
The code will output the following: Masami 10 11 12 13 Niklas

Answer

Correct Option: A

Question 16

Consider the following program code: $x = 10; LOOP: while ($x < 15) { print ($x ); if ($x >= 14 && $x <= 20) { $x += 2; redo LOOP; } else { $x++; }} What is the result of executing this program code?

technology programming languages

The code will output the following: 11 12 13 14 15 16 17 18 19
The code will output the following: 10 11 12 13 14 16 18 20 22
The code will output the following: 10 11 12 13 14 16 18 20
The code will output the following: 10 11 12 13 14 15 16 17 18 19 20

Answer

Correct Option: B

Question 17

Consider the following program code: $y = 1; $x = 2; $z = 3; do { print ($y ); } while ($y eq 2); do { print ($x ); } until ($x eq 2); print ($z ); What is the result of executing this program code?

technology programming languages

The code will output the following:123
The code will output the following: 3
The code will output the following:23
The code will output the following: 321

Answer

Correct Option: A

Question 18

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

technology programming languages

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

Answer

Correct Option: D

Question 19

What do the variable $? contains?

technology programming languages

Page length of a particular output file
The input end-of-line character
The return code returned by a command called by the system function.
The error code generated by a system library routine.

Answer

Correct Option: C

Question 20

What do the variable $! contains?

technology programming languages

Page length of a particular output file
The input end-of-line character
The return code returned by a command called by the system function.
The error code generated by a system library routine.

Answer

Correct Option: D

Description: programming languages Online Quiz - 225
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: programming languages

programming languages Online Quiz - 225

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