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Welcome to our Java Servlet quiz! This blog post presents a set of Multiple Choice Questions (MCQs) to test your knowledge of Java Servlet concepts.
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1. What does a servlet in Java do?
a) Serves static web pages
b) Handles client requests and generates dynamic content
c) Manages database connections
d) Handles email communication
2. Which method is used to initialize a servlet?
a) init()
b) start()
c) initialize()
d) setup()
3. Which method is used to handle GET requests in a servlet?
a) doPost()
b) doGet()
c) service()
d) handleGet()
4. Which method is used to handle POST requests in a servlet?
a) doPost()
b) doGet()
c) service()
d) handlePost()
5. Which method is called to destroy a servlet?
a) destroy()
b) stop()
c) finalize()
d) dispose()
6. Which of the following methods is used to read form data sent via a POST request in a servlet?
a) getRequestData()
b) getFormData()
c) getParameter()
d) getPostData()
7. What is the use of the HttpServletResponse's sendRedirect() method?
a) To forward the request to another resource within the same application
b) To redirect the client to another URL
c) To send an error response to the client
d) To include the content of another resource in the response
8. Which of the following is NOT a valid HTTP method that can be handled by a servlet?
a) GET
b) POST
c) DELETE
d) FETCH
9. How can a servlet share data between requests for the same user?
a) Using instance variables
b) Using cookies
c) Using request attributes
d) Using servlet context
10. What is the default scope of a servlet attribute?
a) Request
b) Session
c) Application
d) Page
11. Which interface provides the methods to access servlet context information?
a) ServletConfig
b) ServletRequest
c) ServletContext
d) HttpServletRequest
12. How does a servlet filter work?
a) It filters the incoming HTTP request before it reaches the servlet
b) It filters the outgoing HTTP response after it leaves the servlet
c) It can filter both the request and response
d) It intercepts HTTP methods
13. Which of the following is NOT a valid servlet lifecycle method?
a) init()
b) service()
c) start()
d) destroy()
14. What is the purpose of the RequestDispatcher's forward() method?
a) To redirect the client to a new URL
b) To forward a request from one servlet to another within the same server
c) To send an error response to the client
d) To send a response back to the client
15. What is the purpose of the session.invalidate() method in a servlet?
a) To refresh the current session
b) To reset the session attributes
c) To invalidate and terminate the current session
d) To extend the session timeout
16. Which of the following is NOT a method of the HttpServletRequest interface?
a) getSession()
b) getCookies()
c) getOutputStream()
d) getParameter()
17. Which of the following statements is true about servlet context?
a) Servlet context is specific to each servlet
b) Servlet context is shared across the entire web application
c) Servlet context is created per user session
d) Servlet context is created per request
18. Which of the following is used to send binary data to the client in a servlet?
a) PrintWriter
b) DataOutputStream
c) ServletOutputStream
d) ObjectOutputStream
19. What is the default timeout period for an HTTP session in a servlet?
a) 15 minutes
b) 30 minutes
c) 60 minutes
d) No timeout
20. Which method is used to set a session attribute in a servlet?
a) setAttribute()
b) putAttribute()
c) addAttribute()
d) storeAttribute()
21. Which method is used to read the body of an HTTP request in a servlet?
a) getInputStream()
b) getBody()
c) readRequestBody()
d) readInputStream()
22. Which of the following is used to pass initialization parameters to a servlet?
a) ServletConfig
b) ServletContext
c) HttpServletRequest
d) HttpSession
23. What does the term "idempotent" refer to in the context of HTTP methods?
a) A method that changes server state
b) A method that can be safely repeated without changing the outcome
c) A method that requires user authentication
d) A method that always returns the same status code
24. What is the purpose of the @WebServlet annotation in a servlet?
a) To specify the servlet's URL mapping
b) To define the servlet's lifecycle methods
c) To specify the servlet's initialization parameters
d) To configure servlet filters
25. Which HTTP status code is sent when a servlet cannot find the requested resource?
a) 404 Not Found
b) 500 Internal Server Error
c) 403 Forbidden
d) 401 Unauthorized
26. What is the primary role of a servlet filter?
a) To handle client requests directly
b) To transform the request and response objects
c) To generate dynamic content
d) To establish database connections
27. Which method is used to retrieve an array of cookies in a servlet?
a) getCookies()
b) getCookieArray()
c) getAllCookies()
d) retrieveCookies()
Conclusion
We hope you enjoyed our Java Servlet quiz! Assessing your knowledge through multiple choice questions helps reinforce your understanding of servlet concepts.
Learn and Master Java Programming: Learn Java Programming with Examples
Check out 100+ quiz questions: 100+ Quiz Questions to Test Your Java, Spring Boot, Microservices, Hibernate, REST API Skills
Keep exploring and practicing Java servlets to further enhance your skills in web development.
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