Tag: programming languages

Questions Related to programming languages

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

  1. -s

  2. -l

  3. -S

  4. -k

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Correct Option: B

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

  1. split

  2. spin

  3. fork

  4. system

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Correct Option: D

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

  1. -s

  2. -l

  3. -S

  4. -k

Show answer
Correct Option: A

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

  1. cd

  2. chdir

  3. pwd

  4. wd

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Correct Option: B

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)=@_; $sublist[1] = 5; }
technology programming languages

  1. (1,2.3)

  2. (1,5,3)

  3. Will produce error

  4. (1,4,3)

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Correct Option: B

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

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

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

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

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

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Correct Option: A

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

  1. The code will output the following: 11 12 13 14 15 16 17 18 19

  2. The code will output the following: 10 11 12 13 14 16 18 20 22

  3. The code will output the following: 10 11 12 13 14 16 18 20

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

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Correct Option: B

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

  1. The code will output the following:123

  2. The code will output the following: 3

  3. The code will output the following:23

  4. The code will output the following: 321

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Correct Option: A

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

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

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

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

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

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Correct Option: D

What do the variable $? contains?
technology programming languages

  1. Page length of a particular output file

  2. The input end-of-line character

  3. The return code returned by a command called by the system function.

  4. The error code generated by a system library routine.

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Correct Option: C