In a web application, you need to audit changes to session attributes. Which listener would you implement?
- HttpSessionAttributeListener
- HttpSessionBindingListener
- HttpSessionEvent
- HttpSessionListener
The HttpSessionAttributeListener interface is used to audit changes to session attributes. This allows you to perform actions when attributes are added, removed, or replaced in a session.
Identify the listener interface that would be used to log session creation and destruction.
- HttpSessionActivationListener
- HttpSessionBindingListener
- HttpSessionEvent
- HttpSessionListener
The HttpSessionListener interface is used to log session creation and destruction events. This allows you to perform actions when sessions are created or destroyed in a web application.
When a new attribute is added to the session, which listener interfaces are invoked?
- HttpSessionActivationListener
- HttpSessionAttributeListener
- HttpSessionBindingListener
- HttpSessionEvent
The HttpSessionAttributeListener interface is invoked when a new attribute is added to the session. This allows you to perform actions when attributes are added, removed, or replaced in a session.
When a servlet context is initialized or destroyed, the ___________ interface is used.
- ServletContextAttributeEvent
- ServletContextAttributeListener
- ServletContextEvent
- ServletContextListener
The ServletContextListener interface is used when a servlet context is initialized or destroyed, providing methods for handling these lifecycle events.
To listen for events related to a specific attribute in a session, implement the interface ___________.
- HttpSessionActivationListener
- HttpSessionAttributeListener
- HttpSessionBindingListener
- HttpSessionListener
To listen for events related to a specific attribute in a session, implement the HttpSessionAttributeListener interface. This allows tracking changes to attributes within the session.
The __________ interface allows objects to be notified of changes in session lifecycle.
- HttpSessionActivationListener
- HttpSessionAttributeListener
- HttpSessionBindingListener
- HttpSessionListener
The HttpSessionListener interface allows objects to be notified of changes in the session lifecycle, such as session creation, attribute addition, and session invalidation.
_________ is used to monitor lifecycle events of a session.
- EventListener
- HttpSessionListener
- ServletContextListener
- ServletRequestListener
The correct answer is HttpSessionListener. This interface is used to monitor lifecycle events of a session, such as when a session is created, destroyed, or its attributes are modified.
The method attributeAdded belongs to the interface _________.
- HttpSessionAttributeListener
- HttpSessionListener
- ServletContextListener
- ServletRequestListener
The correct answer is HttpSessionAttributeListener. The attributeAdded method is part of this interface, which is used to receive notifications about the addition of attributes to a session.
A filter can alter the header information of a request or response by modifying the _______.
- HttpServletRequest
- HttpServletResponse
- RequestHeader
- ServletResponse
A filter can alter the header information of a request or response by modifying the ServletResponse.
The sequence of filters applied to a request is determined by the order of _______ in the web.xml file.
- filter
- filter-mapping
- filter-order
- web-filter
The sequence of filters applied to a request is determined by the order of filter-mapping elements in the web.xml file.
To pass the request and response to the next entity in the chain, the filter uses the __________ method.
- chain.continue()
- chain.doFilter()
- chain.doNext()
- chain.forward()
To pass the request and response to the next entity in the chain, the filter uses the chain.doFilter() method. This method is invoked to invoke the next filter or the servlet in the chain.
In the deployment descriptor, the __________ tag is used to specify which requests are passed through a particular filter.
In the deployment descriptor, the tag is used to specify which requests are passed through a particular filter by associating it with a filter name and a URL pattern.