多选题A session-scoped attribute is stored by a servlet， and then that servlet forwards to a JSP page. Which threejsp：useBean attributes must be used to access this attribute in the JSP page？（）AidBnameCbeanDtypeEscope

第1题：

Which statement is true about web container session management？（）

• A、Access to session-scoped attributes is guaranteed to be thread-safe by the web container.
• B、To activate URL rewriting， the developer must use the HttpServletResponse.setURLRewriting method.
• C、If the web application uses HTTPS， then the web container may use the data on the HTTPS request stream to identify the client.
• D、The JSESSIONID cookie is stored permanently on the client so that a user may return to the web application and the web container will rejoin that session.

第2题：

Upon a user’s first visit to the website， which two operations are always performed when the getSession method is called with no arguments in a servlet？（）

• A、 All URLs returned by the server are rewritten.
• B、 An HttpSession object is created if necessary.
• C、 The user name and password of the user are checked.
• D、 The session ID is stored in the HTTP response as a cookie.

第3题：

第4题：

For which three events can web application event listeners be registered？（）

• A、When a session is created
• B、After a servlet is destroyed
• C、When a session has timed out
• D、When a cookie has been created
• E、When a servlet has forwarded a request
• F、When a session attribute value is changed

第5题：

A session-scoped attribute is stored by a servlet， and then that servlet forwards to a JSP page. Which threejsp：useBean attributes must be used to access this attribute in the JSP page？（）

• A、id
• B、name
• C、bean
• D、type
• E、scope

第6题：

Which two prevent a servlet from handling requests.？（）

• A、 The servlet’s init method returns a non-zero status.
• B、 The servlet’s init method throws a Servlet Exception
• C、 The servlet’s init method sets the Servlet Response’s context length to 0
• D、 The servlet’s init method sets the Servlet Response’s content type to null.
• E、 The servlet’s init method does NOT return within a time period defined by the servlet container.

第7题：

Which interface must a session attribute implement if it needs to be notified when a web container persistsa session？（）

• A、javax.servlet.http.HttpSessionListener
• B、javax.servlet.http.HttpSessionBindingListener
• C、javax.servlet.http.HttpSessionAttributeListener
• D、javax.servlet.http.HttpSessionActivationListener

第8题：

第9题：

You have a use case in your web application that adds several session-scoped attributes. At the end of theuse case， one of these objects， the manager attribute， is removed and then it needs to decide which of theother session-scoped attributes to remove. How can this goal be accomplished？（）

• A、The object of the manager attribute should implement the HttpSessionBindingListener and it should call the removeAttribute method on the appropriate session attributes.
• B、The object of the manager attribute should implement the HttpSessionListener and it should call the removeAttribute method on the appropriate session attributes.
• C、The object of the manager attribute should implement the HttpSessionBindingListener and it should call the deleteAttribute method on the appropriate session attributes.
• D、The object of the manager attribute should implement the HttpSessionListener and it should call the deleteAttribute method on the appropriate session attributes.

第10题：

Given the HttpServlet code：   getServletContext（）.setAttribute（“foo”， “value”）； What is the result？（）

• A、 The attribute foo is placed in the application
• B、 A ServletContextListener registered for that servlet is notified
• C、 A ServletAttributeListener registered for that servlet is notified
• D、 An HttpSessionAttributeListener registered for that servlet is notified