Online Access Free 1Z0-899 Exam Questions

Given a war file with the following structure
| - WEB-INF/classes/Myservlet.class
| - WEB-INF/lib/wf.jaf
Where wf.jar contains a valid web-fragment.xml and the following two classes: MyFilter1.class and MyFiler2.class.
The web-fragment.xml is as follows:

The following are some code snippets:

When one access "/" of the above web application, which filters will be executed?

• A.MyFilter2
• B.MyFilter1
• C.MyFilter1 and MyFilter2
• D.No filters will be executed.

A developer chooses to avoid using singieThreadModel but wants to ensure that data If; updated in a thread safe manner.
Which two can support this design goal? (Choose two)

• A.Store the data in the Httpsession object.
• B.Store the data in an instance variable.
• C.Store the data in the ServletRequest object.
• D.Store the data in a local variable.
• E.Store the data in the sarvletContext object.

A method call inside your servlet has thrown an IOException resulting from a lost network connection to a necessary resource. The servlet has determined that it will be unable to operate successfully for a few minutes, but expects to be able to resume operation after that period. How should this situation handled?

• A.The servlet should re-throw the exception to the web container.
• B.The servlet should throw a servletException to the web container.
• C.The servlet should throw an unavailableException to the web container.
• D.The servlet should redirect to an error page that reports the exception message.
• E.The servlet should retry the request until the method returns successfully.

During initialization, a servlet finds that the database connection it requires is unavailable. As the system designer, you know that the database start up completes several minutes after the web- container initializes the servlet. How should this be handled?

• A.Retry the connection until it is successful, then allow the init() method to complete.
• B.Throw the IOException
• C.Throw a ServletException
• D.Throw an UnavailableException

An application stores session data in a JavaBean object. The object is then stored in the HttpSession object.
Which is true?

• A.Appropriate protection against problems caused by concurrent access should be provided by the bean.
• B.Synchronization of all bean methods is required to ensure thread safety.
• C.Thread safety is not an issue, since concurrent access to a single session is impossible.
• D.The servlet should take precautions to ensure that concurrent access to the bean is prevented.
• E.The servlet should implement SingleThreadModel