HTML Forms Handling MCQ question and answer with solution

41.
Which function is used to erase all session variables stored in the current session?

A. session_destroy()

B. session_change()

C. session_remove()

D. session_unset()

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42.
What will the function session_id() return is no parameter is passed?

A. Current Session Identification Number

B. Previous Session Identification Number

C. Last Session Identification Number

D. Error

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43.
Which one of the following statements should you use to set the session username to Nachi?

A. $SESSION[‘username’] = “Nachi”;

B. $_SESSION[‘username’] = “Nachi”;

C. session_start(“nachi”);

D. $SESSION_START[“username”] = “Nachi”;

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44.

What will be the output of the following PHP code? Say your previous session username was nachi.

<?php
unset($_SESSION['username']);
printf("Username now set to: %s", $_SESSION['username']);
?>

A. Username now set to: nachi

B. Username now set to: System

C. Username now set to:

D. Error

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45.
An attacker somehow obtains an unsuspecting user’s SID and then using it to impersonate the user inorder to gain potentially sensitive information. This attack is known as.

A. session-fixation

B. session-fixing

C. session-hijack

D. session-copy

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46.
Which parameter determines whether the old session file will also be deleted when the session ID is regenerated?

A. delete_old_file

B. delete_old_session

C. delete_old_session_file

D. delete_session_file

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47.
Which function effectively deletes all sessions that have expired?

A. session_delete()

B. session_destroy()

C. session_garbage_collect()

D. session_expired_delete()

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48.
Which function is used to transform PHP’s session-handler behavior into that defined by your custom handler?

A. session_set_save()

B. session_set_save_handler()

C. Session_handler()

D. session_save_handler()

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49.
The session_start() function must appear.

A. after the html tag

B. after the body tag

C. before the body tag

D. before the html tag

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50.
What is the return type of session_set_save_handler() function?

A. boolean

B. integer

C. float

D. character

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HTML Forms Handling MCQ question and answer with solution | PHP Programming

41. Which function is used to erase all session variables stored in the current session?

Answer & Solution

42. What will the function session_id() return is no parameter is passed?

Answer & Solution

43. Which one of the following statements should you use to set the session username to Nachi?

Answer & Solution

44. What will be the output of the following PHP code? Say your previous session username was nachi. <?php unset($_SESSION['username']); printf("Username now set to: %s", $_SESSION['username']); ?>

Answer & Solution

45. An attacker somehow obtains an unsuspecting user’s SID and then using it to impersonate the user inorder to gain potentially sensitive information. This attack is known as.

Answer & Solution

46. Which parameter determines whether the old session file will also be deleted when the session ID is regenerated?

Answer & Solution

47. Which function effectively deletes all sessions that have expired?

Answer & Solution

48. Which function is used to transform PHP’s session-handler behavior into that defined by your custom handler?

Answer & Solution

49. The session_start() function must appear.

Answer & Solution

50. What is the return type of session_set_save_handler() function?

Answer & Solution

41.
Which function is used to erase all session variables stored in the current session?

42.
What will the function session_id() return is no parameter is passed?

43.
Which one of the following statements should you use to set the session username to Nachi?

44.
What will be the output of the following PHP code? Say your previous session username was nachi.

`<?php unset($_SESSION['username']); printf("Username now set to: %s", $_SESSION['username']); ?>`

45.
An attacker somehow obtains an unsuspecting user’s SID and then using it to impersonate the user inorder to gain potentially sensitive information. This attack is known as.

46.
Which parameter determines whether the old session file will also be deleted when the session ID is regenerated?

47.
Which function effectively deletes all sessions that have expired?

48.
Which function is used to transform PHP’s session-handler behavior into that defined by your custom handler?

49.
The session_start() function must appear.

50.
What is the return type of session_set_save_handler() function?