Interview Questions

1. 1.Connection Pooling Class manages no of user requests for connections to improve the performance.

Options:

a. True

b. False

Reveal Answer

2. 2.Which object of HttpSession can be used to view and manipulate information about a session?

Options:

a. session identifier

b. creation time

c. last accessed time

d. All mentioned above

Reveal Answer

3. 3.Using mail API we cannot send mail from a servlet.

Options:

a. True

b. False

Reveal Answer

4. 4.Which class provides stream to read binary data such as image etc. from the request object?

Options:

a. ServltInputStream

b. ServletOutputStream

c. Both A & B

d. None of the above

Reveal Answer

5. 5.The sendRedirect() method of HttpServletResponse interface can be used to redirect response to another resource, it may be servlet, jsp or html file.

Options:

a. False

b. True

Reveal Answer

6. 6. Which of these ways used to communicate from an applet to servlet?

Options:

a. RMI Communication

b. HTTP Communication

c. Socket Communication

d. All mentioned above

Reveal Answer

7. 7.Which methods are used to bind the objects on HttpSession instance and get the objects?

Options:

a. setAttribute

b. getAttribute

c. Both A & B

d. None of the above

Reveal Answer

8. 8.Which type of ServletEngine is a server that includes built-in support for servlets?

Options:

a. Add-on ServletEngine

b. Embedded ServletEngine

c. Standalone ServletEngine

d. None of the above

Reveal Answer

9. 9. What type of servlets use these methods doGet(), doPost(),doHead, doDelete(), doTrace()?

Options:

a. Genereic Servlets

b. HttpServlets

c. All of the above

d. None of the above

Reveal Answer

10. 10.Which cookie it is valid for single session only and it is removed each time when the user closes the browser?

Options:

a. Persistent cookie

b. Non-persistent cookie

c. All the above

d. None of the above

Reveal Answer

11. 11.Sessions is a part of the SessionTracking and it is for maintaining the client state at server side.

Options:

a. True

b. False

Reveal Answer

12. 12.Web server is used for loading the init() method of servlet.

Options:

a. True

b. False

Reveal Answer

13. 13) Servlets handle multiple simultaneous requests by using threads.

Options:

a. True

b. False

Reveal Answer

14. 13) Servlets handle multiple simultaneous requests by using threads.

Options:

a. True

b. False

Reveal Answer

15. 14.Which method is used to send the same request and response objects to another servlet in RequestDispacher ?

Options:

a. forward()

b. sendRedirect()

c. Both A & B

d. None of the above

Reveal Answer

16. 15.Which packages represent interfaces and classes for servlet API?

Options:

a. javax.servlet

b. javax.servlet.http

c. Both A & B

d. None of the above

Reveal Answer

17. 16.Which class can handle any type of request so that it is protocol-independent?

Options:

a. GenericServlet

b. HttpServlet

c. Both A & B

d. None of the above

Reveal Answer

18. 17.Which HTTP Request method is non-idempotent?

Options:

a. GET

b. POST

c. BOTH A & B

d. None of the above

Reveal Answer

19. 17.Which HTTP Request method is non-idempotent?

Options:

a. GET

b. POST

c. BOTH A & B

d. None of the above

Reveal Answer

20. 18.Which object is created by the web container at time of deploying the project?

Options:

a. ServletConfig

b. ServletContext

c. Both A & B

d. None of the above

Reveal Answer

21. 18.Which object is created by the web container at time of deploying the project?

Options:

a. ServletConfig

b. ServletContext

c. Both A & B

d. None of the above

Reveal Answer

22. 19. What is the lifecycle of a servlet?

Options:

a. Servlet class is loaded

b. Servlet instance is created

c. init,Service,destroy method is invoked

d. All mentioned above

Reveal Answer

23. 20.Which method in session tracking is used in a bit of information that is sent by a web server to a browser and which can later be read back from that browser?

Options:

a. HttpSession

b. URL rewriting

c. Cookies

d. Hidden form fields

Reveal Answer

Interview Questions and Answer

1. 1.Connection Pooling Class manages no of user requests for connections to improve the performance.

2. 2.Which object of HttpSession can be used to view and manipulate information about a session?

3. 3.Using mail API we cannot send mail from a servlet.

4. 4.Which class provides stream to read binary data such as image etc. from the request object?

5. 5.The sendRedirect() method of HttpServletResponse interface can be used to redirect response to another resource, it may be servlet, jsp or html file.

6. 6. Which of these ways used to communicate from an applet to servlet?

7. 7.Which methods are used to bind the objects on HttpSession instance and get the objects?

8. 8.Which type of ServletEngine is a server that includes built-in support for servlets?

9. 9. What type of servlets use these methods doGet(), doPost(),doHead, doDelete(), doTrace()?

10. 10.Which cookie it is valid for single session only and it is removed each time when the user closes the browser?

11. 11.Sessions is a part of the SessionTracking and it is for maintaining the client state at server side.

12. 12.Web server is used for loading the init() method of servlet.

13. 13) Servlets handle multiple simultaneous requests by using threads.

14. 13) Servlets handle multiple simultaneous requests by using threads.

15. 14.Which method is used to send the same request and response objects to another servlet in RequestDispacher ?

16. 15.Which packages represent interfaces and classes for servlet API?

17. 16.Which class can handle any type of request so that it is protocol-independent?

18. 17.Which HTTP Request method is non-idempotent?

19. 17.Which HTTP Request method is non-idempotent?

20. 18.Which object is created by the web container at time of deploying the project?

21. 18.Which object is created by the web container at time of deploying the project?

22. 19. What is the lifecycle of a servlet?

23. 20.Which method in session tracking is used in a bit of information that is sent by a web server to a browser and which can later be read back from that browser?

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