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Servlets Interview Questions and Answers

Ques 11. How can I send user authentication information while making URL Connection?

Ans. You'll want to use HttpURLConnection.setRequestProperty and set all the appropriate headers to HTTP authorization.

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Ques 12. The code in a finally clause will never fail to execute, right?
Ans. Using System.exit(1); in try block will not allow finally code to execute.
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Ques 13. What mechanisms are used by a Servlet Container to maintain session information?
Ans. Cookies, URL rewriting, and HTTPS protocol information are used to maintain session information
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Ques 14. Difference between GET and POST
Ans. In GET your entire form submission can be encapsulated in one URL, like a hyperlink. query length is limited to 260 characters, not secure, faster, quick and easy.
In POST Your name/value pairs inside the body of the HTTP request, which makes for a cleaner URL and imposes no size limitations on the form's output. It is used to send a chunk of data to the server to be processed, more versatile, most secure.
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Ques 15. What is session?
Ans. The session is an object used by a servlet to track a user's interaction with a Web application across multiple HTTP requests.
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