The __________ method is essential for managing user logouts in secure web applications.
- closeSession(), terminate()
- destroySession()
- endSession(), finalize()
- logout()
The logout() method is essential for managing user logouts in secure web applications. It typically involves invalidating the user's session to ensure they are logged out securely.
Role-based authorization in servlets is often implemented using the _________ descriptor.
- authorization.xml
- roles.xml
- servlet.xml
- web.xml
Role-based authorization in servlets is often implemented using the web.xml descriptor, where roles and corresponding access rights are defined to control access to servlet resources based on user roles.
What is the role of a servlet filter in security?
- Handle HTTP Requests
- Manage Database Connections
- Manipulate Session Attributes
- Process Security Policies
A servlet filter plays a crucial role in security by processing security policies. It can inspect and manipulate both the request and response to enforce security measures before reaching the servlet.
How can a servlet implement role-based access control?
- By configuring web.xml
- By modifying the servlet container source code
- Using declarative security
- Using programmatic security
Role-based access control in servlets can be implemented using declarative security, where roles are defined in the deployment descriptor (web.xml) and associated with specific resources or operations.
How is session hijacking typically prevented in a servlet-based application?
- By disabling session tracking
- By increasing session timeout
- Using HTTPS
- Using servlet filters
Session hijacking is typically prevented in a servlet-based application by using HTTPS to secure communication between the client and the server, encrypting the session data to prevent unauthorized access.
In servlets, the _________ mechanism is used to encrypt data transmitted over the network.
- HTTP
- HTTPS
- SSL/TLS
- TCP
In servlets, the SSL/TLS mechanism is used to encrypt data transmitted over the network, providing a secure communication channel.
The __________ API in Java EE is used for declarative security in web applications.
- Java EE Security
- Java Security
- Servlet Security
- Web Security
The Java EE Security API is used for declarative security in web applications, allowing developers to specify security constraints.
A secure servlet session is typically identified through a unique _________.
- URL parameter
- authentication token
- cookie
- session ID
A secure servlet session is typically identified through a unique session ID assigned to each user during their session.
How should an HTTP servlet respond to a request with an If-Modified-Since header older than the content's last modification date?
- Return a 200 OK response with the updated content
- Return a 304 Not Modified response
- Return a 403 Forbidden response
- Return a 500 Internal Server Error response
If the If-Modified-Since header indicates that the content hasn't been modified since the provided date, the servlet should return a 304 Not Modified response to indicate that the client's cached copy is still valid.
A web application requires users to log in for access. Which servlet feature should be implemented for this requirement?
- Filter
- HttpSession
- RequestDispatcher
- ServletContext
The HttpSession feature in servlets is commonly used for session management, allowing the tracking and management of user sessions, which is essential for implementing user logins in web applications.