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2016 Sep 1Z0-899 Study Guide Questions:
Q91. 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.
Q92. Which java code snippet checks whether the user is of the role “MANAGER” for a given HttpServRequest, httpServletRequest?
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Q94. When using Servlet asynchronous API if you want to dispatch the request back to a particular url -"/url" within the same Servlet Context which of the following API would you use?
C. AsyncContext.dispatch(servletContext, "/url");
F. RequestDispatcher.forward(servletContext, "/url");
Q95. Which EL expression evaluates to the request URI?
Q96. A developer wants to make a name attribute available to all servlets associated with a particular user, across multiple requests from that user, from the same browser instance.
Which two provide this capability from within a tag handler? (Choose two)
A. pageContext.setAttribute(“name”, theValue);
B. pageContext.setAttribute(“name”, getSession() );
C. pageContext.getRequest().setAttribute(“name”, theValue);
D. pageContext.getSession().setAttribute(“name”, theValue);
E. pageContext.setAttribute(“name”, theValue, PageContext.PAGE_SCOPE);
F. pageContext.setAttribute(“name”, theValue, PageContext.SESSION_SCOPE);
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Q97. A Client wants to retrieve a representation of a resource, e.g. an XML document, localized according to the preferences of the user. Each user is allowed to specify one or more languages, in order of preference. Such preferences are application independent.
How can the Client send language preference Information to the Server using a standard HTTP facility?
A. In the request body
B. In a request header
C. In the request line
D. In the request URL
Q98. Your web application requires the adding and deleting of many session attributes during a complex use case. A bug report has come in that indicates that an important session attribute is being deleted too soon and a NullPointerException is being thrown several interactions after the fact. You have decided to create a session event listener that will log when attributes are being deleted so you can track down when the attribute is erroneously being deleted.
Which listener class will accomplish this debugging goal?
A. Create an HttpSessionAttributeListener class and implement the attributeDeleted method and log the attribute name using the getName method on the event object.
B. Create an HttpSessionAttributeListener class and implement the attributeRemoved method and log the attribute name using the getName method on the event object.
C. Create an SessionAttributeListener class and implement the attributeRemoved method and log the attribute name using the getAttributeName method on the event object.
D. Create an SessionAttributeListener class and implement the attributeDeleted method and log the attribute name using the getAttributeName method on the event object.
object value = session.getAttribute(key);
Q100. A popular Ajax framework and its companion widget library contain several hundreds of files of different types (.js, .ess, .html). Your company has mandated that all its web applications use only specific versions of this framework approved by IT and repackaged internally as jar files. Furthermore, web applications should only include the entire jar, without subsetting or modification.
Where should the framework's files be placed inside a jar file to enable this kind of reuse?
A. under resources
B. under META-INF/resources
C. under META-INF/web-contents
D. under WEB-INF/resources