Question 1 10 points) which of the following is not correct about web session? a session is a random token generated dynamically a session can be used to save user preference while visiting to a website A session is not needed for HTTP web applications requiring establishing user privilege level and list of permitted funcationalities None of the above Save Question 2 (15 points) In PHP, isset(S SESSION['xyz']) method returns true if there already exists a session with token "xyz" True False Save Question 3 (10 points) To answer this question, you need to go to http:'php.net/manual/en/function.session- start.php Is the statement below true/false? session start destroys a session if a current one already exists that may be obtained via a GET or POST request, or passed via a cookie. True False