In a scenario where a filter chain is used for both compression and encryption, which process should ideally occur first?
- Compression, Encryption, Other Filters, Process Request
- Compression, Other Filters, Encryption, Process Request
- Encryption, Compression, Other Filters, Process Request
- Other Filters, Compression, Encryption, Process Request
In this scenario, it is generally recommended to perform encryption before compression. This ensures that the data is first secured through encryption and then compressed. Therefore, the correct order is to place the encryption filter before the compression filter in the filter chain.
If you want to perform some task when a session is created or destroyed, which listener should you implement?
- HttpSessionAttributeListener
- HttpSessionListener
- ServletContextListener
- ServletRequestListener
The HttpSessionListener interface is used to perform tasks when a session is created or destroyed.
Which listener is used to track changes to the attributes of the ServletRequest?
- HttpSessionListener
- ServletContextListener
- ServletRequestAttributeListener
- ServletRequestListener
The ServletRequestAttributeListener interface is used to track changes to the attributes of the ServletRequest, such as when an attribute is added, removed, or replaced.
For monitoring changes to the session's attribute list, which listener interface is suitable?
- HttpSessionAttributeListener
- HttpSessionBindingListener
- ServletContextListener
- ServletRequestListener
The HttpSessionAttributeListener interface is suitable for monitoring changes to the session's attribute list.
The __________ element in web.xml is used to define a logical name for a servlet.
- logical-name
- name
- servlet-logical
- servlet-name
The element in web.xml is used to define a logical name for a servlet.
What is the primary use of the ServletContextAttributeListener in a web application?
- To handle changes in session attributes.
- To listen for changes in the servlet context.
- To monitor changes in attributes at the application scope.
- To track the addition or removal of servlets in the application.
The primary use of ServletContextAttributeListener is to monitor changes in attributes at the application scope, such as when attributes are added, removed, or replaced in the ServletContext.
How does ServletRequestAttributeListener differ from ServletRequestListener in its functionality?
- ServletRequestAttributeListener is triggered only when attributes are added to the request.
- ServletRequestAttributeListener is triggered when attributes are added, removed, or replaced in the request scope.
- ServletRequestListener is triggered only when the request is dispatched.
- ServletRequestListener is triggered when a request is initialized or destroyed.
ServletRequestAttributeListener is specifically designed to listen for changes in request attributes, whereas ServletRequestListener focuses on the initialization and destruction of the request.
Can a single class implement multiple listener interfaces in Servlets? If so, what are the considerations?
- No, a class can only implement one listener interface in Servlets.
- No, it depends on the version of the Servlet API.
- Yes, a class can implement multiple listener interfaces.
- Yes, but it is not recommended due to potential conflicts.
Yes, a single class can implement multiple listener interfaces in Servlets. However, it's essential to carefully consider potential conflicts and ensure that the class can handle events from all implemented interfaces.
The __________ interface is used to receive events about changes to the servlet context's attribute list.
- ServletAttributeEvent
- ServletContextAttributeEvent
- ServletContextEvent
- ServletEvent
The ServletContextAttributeEvent interface is used to receive events about changes to the servlet context's attribute list.
To track the creation and destruction of HttpSession objects, the _________ interface is implemented.
- HttpSessionEvent
- HttpSessionListener
- HttpSessionTracker
- SessionLifecycleListener
The HttpSessionListener interface is implemented to track the creation and destruction of HttpSession objects.