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The encodeRedirectURL() method of the HttpServletResponse interface, returns a URL by including a session ID in it for use in the sendRedirect() method. If the encoding is not required, the URL is returned unchanged. If browser supports cookies, the encodeRedirectURL() method returns the input URL unchanged, since the session ID will be persisted as a cookie. This method is different from the encodeURL as this method redirects the request to a different URL in the same session. The syntax of the encodeRedirectURL() method is as follows: public String encodeRedirectURL(String urlstring) Here, urlstring is the URL to be encoded. Answer: C is incorrect. The encodeURL() method of the HttpServletResponse interface returns a URL by including the session ID in it. If the encoding is not required, the URL is returned unchanged. If cookies are supported by the browser, the encodeURL() method returns the input URL unchanged since the session ID will be persisted as a cookie. The syntax of the encodeURL() method is as follows: public String encodeURL(String urlstring) Here, urlstring is the URL to be encoded.