JAVA Quiz 3

Explain the life cycle of a servlet.

• Request Handling -> Initialization -> Service -> Destruction

• Initialization -> Destruction -> Request Handling -> Service

• Service -> Request Handling -> Initialization -> Destruction

• Initialization -> Request Handling -> Service -> Destruction

What is a request dispatcher in servlets?

• A method for encrypting data in servlets

• A feature that allows servlets to send emails

• Interface that provides the facility of dispatching the request to another resource such as HTML, JSP, or another servlet.

• A class that handles HTTP requests and responses

How is session management handled in servlets?

• Session management in servlets is handled using the ServletSession interface.

• Session management in servlets is handled using the ServletConfig interface.

• Session management in servlets is handled using the HttpServletRequest interface.

• Session management in servlets is handled using the HttpSession interface.

What are cookies in the context of servlets?

• Images displayed on the website

• Large pieces of data stored on the server side

• Videos embedded in the webpage

• Small pieces of data sent from a website and stored on the user's computer by the user's web browser while the user is browsing.

What are the different phases of servlet life cycle?

• Loading and Instantiation, Initialization, Request Handling, Destruction

• Initialization and Finalization

• Creation and Destruction

• Execution and Termination

How can you forward a request to another servlet using request dispatcher?

• Directly call the other servlet's method

• Obtain request dispatcher from current servlet's request object and use forward method to forward the request.

• Use a GET request instead of a forward method

• Manually copy and paste the request data to the other servlet

What is the purpose of session tracking in servlets?

• The purpose of session tracking in servlets is to maintain stateful information about a user across multiple requests.

• Session tracking in servlets is meant to track user location

• Session tracking in servlets is used for caching web pages

• Session tracking in servlets is used for encrypting user data

How are cookies used to maintain state in servlets?

• Cookies are used to store server-side data for servlets

• Cookies are used to execute servlets on the client side

• Cookies store information on the client side and are used to identify and maintain state for servlets.

• Cookies are used to maintain state in HTML forms, not servlets

Discuss the importance of init() and destroy() methods in servlets.

• The init() method is used for displaying output in the servlet, while the destroy() method is for user input handling.

• The init() method is responsible for handling HTTP requests, while the destroy() method is for database connections.

• The init() method is used for error handling in servlets, while the destroy() method is for session management.

• The init() method initializes the servlet, while the destroy() method cleans up resources before the servlet is removed.

Explain the difference between session and cookies in servlets.

• Sessions and cookies are the same thing

• Sessions are used for static websites, while cookies are used for dynamic websites

• Sessions store data on the server side, while cookies store data on the client side.

• Cookies are more secure than sessions