Java MVC and Web Development Assessment
Q1. Select all options which are true about the welcome-file-list
Answer: When the only specified item is welcome.html, the server still treats index.html as a backup
lf not specified the default landing page is index html
Q2. GenericServlet class is encapsulated inside ____ package?
Answer: javax.servlet
Q3. Which method is used to retrieve a form value in a JSP or Servlet?
Answer: request.getParameter(String)
Q4. When doPost() method of servlet gets called?
Answer: Both of the above
Q5. Which class provide implementation for service() method ?
Answer: HttpServlet
Q6. The _____ object is used to forward the request processing from one servlet to another?
Answer: RequestDispatcher
Q7. When init() method of servlet gets called?
Answer: The init() method is called when the servlet is first created.
Q8. Given request is an HttpServletRequest, which code snippets will creates a session if one doesn't exist?
Answer: request getSession();
Q9. Which of the following attribute is used to have uncaught run-time exceptions automatically forwarded to an error processing page?
Answer: errorPage
Q10. What file specifies the default welcome page?
Answer: Web.xml
Q11. Which method of HttpServletResponse is used to redirect an HTTP request to another URL ?
Answer: sendRedirect()
Q12. Which of the following code is used to get a HTTP Session object in servlets?
Answer: request.getSession()
Q13. How do you switch between Java code and HTML code in a jsp file?
Answer: Java code is the default HTML code is kept inside <%> brackets.
Q14. What is javax.servlet.http.HttpServlet?
Answer: abstract class
Q15. JSP pages are processed on the server
Answer: TRUE
Q16. What are the different techniques for managing a session?
Answer: All of the above
Q17. what is the return type of getAttribute(String name) in ServletRequest
Answer: String
Q18. Which of the below methods returns a string containing information about the serviet, such as its author, version, and copyrigh.
Answer: getServletinfo()
Q19. Which of the following attribute is used to mark a page as error processing page?
Answer: isErrorPage
Q20. Which of the following statement is not correct about HTTP method ?
Answer: A POST request append data to the end of the URL
Q21. session is instance of which class?
Answer: HttpSession
Q22. Choose the statement that best describes the relationship between JSP and servlets:
Answer: Servlets are built on JSP semantics and all servlets are compiled to JSP pages for runtime usage
Q23. Which tag in the jsp is used to define a page as an error page?
Answer: <%@page isErrorPage="true" %>
Q24. Which of these classes define the getWriter() method that returns an object of type PrintWriter ?
Answer: HttpServletResponse
Q25. Consider the following JSP page with an error in the Java code. What will happen when we try to access this jsp file on the server
Answer: The page will load normally, and the java errors which happen will be skipped.
Q26. Which of the following is not a implicit object?
Answer: cookie
Q27. Get is faster than POST method
Answer: TRUE
Q28. Which of the following is true about Initialization phase in JSP life cycle?
Answer: When a container loads a JSP it invokes the jsplnit() method before servicing any requests
Q29. The servlet-mapping element defines
Answer: a mapping between a servlet and a URL pattern
Q30. If in a form tag, no method attribute is specified, what function will be run?
Answer: doGet
