Interview Questions

1. 1.Which of the following is true about service() method of servlet?

Options:

a. The servlet container (i.e. web server) calls the service() method to handle requests coming from the client.

b. Each time the server receives a request for a servlet, the server spawns a new thread and calls service.

c. The service() method checks the HTTP request type (GET, POST, PUT, DELETE, etc.) and calls doGet, doPost, doPut, doDelete, etc. methods as appropriate.

d. All of the above.

Reveal Answer

2. 2.Which of the following method can be used to get the value of form parameter?

Options:

a. request.getParameter()

b. request.getParameterValues()

c. request.getParameterNames()

d. None of the above.

Reveal Answer

3. 3.Which of the following code is used to get names of the attributes in servlet?

Options:

a. response.getAttributeNames()

b. request.getAttributeNames()

c. Header.getAttributeNames()

d. None of the above.

Reveal Answer

4. 4.Which of the following code retrieves name and version of the protocol?

Options:

a. Header.getProtocol()

b. response.getProtocol()

c. request.getProtocol()

d. None of the above.

Reveal Answer

5. 5.Which of the following code encodes the specified URL for use in the sendRedirect method?

Options:

a. response.encodeRedirectURL(url)

b. request.encodeRedirectURL(url)

c. Header.encodeRedirectURL(url)

d. None of the above.

Reveal Answer

6. 6. Which of the following code can be used to write a cookie?

Options:

a. request.addCookie(cookie)

b. response.addCookie(cookie)

c. Header.addCookie(cookie)

d. None of the above.

Reveal Answer

7. 7.Which of the following are valid servlet filters?

Options:

a. Authentication Filters.

b. Data compression Filters.

c. Encryption Filters.

d. All of the above.

Reveal Answer

8. 8.Which of the following request attributes that an error-handling servlet can access to analyse the nature of error/exception?

Options:

a. javax.servlet.error.status_code

b. javax.servlet.error.exception_type

c. javax.servlet.error.message

d. All of the above.

Reveal Answer

9. 9.Which of the following code delete a cookie in servlet?

Options:

a. response.deleteCookie(cookie);

b. cookie.setMaxAge(0);

c. request.deleteCookie(cookie);

d. None of the above

Reveal Answer

10. 10.Which of the following code is used to set auto refresh of a page after 5 seconds?

Options:

a. session.setIntHeader("Refresh", 5)

b. response.setIntHeader("Refresh", 5)

c. request.setIntHeader("Refresh", 5)

d. None of the above.

Reveal Answer

11. 11.Which of the following is true about service() method of servlet?

Options:

a. The servlet container (i.e. web server) calls the service() method to handle requests coming from the client.

b. Each time the server receives a request for a servlet, the server spawns a new thread and calls service.

c. The service() method checks the HTTP request type (GET, POST, PUT, DELETE, etc.) and calls doGet, doPost, doPut, doDelete, etc. methods as appropriate.

d. All of the above.

Reveal Answer

12. 12.Which of the following code is used to set content type of a page to be serviced using servlet?

Options:

a. response.setContentType()

b. request.setContentType()

c. writer.setContentType()

d. None of the above.

Reveal Answer

13. 13.Which of the following code is used to get PrintWriter object in servlet?

Options:

a. response.getWriter()

b. request.getWriter()

c. new PrintWriter()

d. None of the above.

Reveal Answer

14. 14.Which of the following code retrieves the name of the HTTP Method?

Options:

a. Header.getMethod()

b. response.getMethod()

c. request.getMethod()

d. None of the above.

Reveal Answer

15. 15.Which of the following code retrieves session ID specified by the client?

Options:

a. request.getRequestedSessionId()

b. response.getRequestedSessionId()

c. Header.getRequestedSessionId()

d. None of the above.

Reveal Answer

16. 16.Which of the following code can be used to add a header with the given name and integer value?

Options:

a. request.addHeader(name,value)

b. response.addIntHeader(name,value)

c. Header.addDateHeader(name,value)

d. None of the above.

Reveal Answer

17. 17.Which of the following code can be used to set the length of content of body of the response?

Options:

a. request.setContentLength(length)

b. response.setContentLength(length)

c. header.setContentLength(length)

d. None of the above.

Reveal Answer

18. 18.Which of the following is true about javax.servlet.error.message?

Options:

a. This attribute gives exact error message which can be stored and analysed after storing in a java.lang.String data type.

b. This attribute gives information about exception type which can be stored and analysed after storing in a java.lang.Class data type.

c. This attribute gives status code which can be stored and analysed after storing in a java.lang.Integer data type.

d. This attribute gives information about URL calling the servlet and it can be stored and analysed after storing in a java.lang.String data type.

Reveal Answer

19. 19.Which of the following code is used to add an attribute in a HTTP Session object in servlets?

Options:

a. session.addAttribute(name,value)

b. session.setAttribute(name,value)

c. session.createAttribute(name,value)

d. None of the above.

Reveal Answer

20. 19.Which of the following code is used to add an attribute in a HTTP Session object in servlets?

Options:

a. session.addAttribute(name,value)

b. session.setAttribute(name,value)

c. session.createAttribute(name,value)

d. None of the above.

Reveal Answer

21. 20. Which of the following code is used to set auto refresh of a page after 5 seconds?

Options:

a. session.setIntHeader("Refresh", 5)

b. response.setIntHeader("Refresh", 5)

c. request.setIntHeader("Refresh", 5)

d. None of the above.

Reveal Answer

Interview Questions and Answer

1. 1.Which of the following is true about service() method of servlet?

2. 2.Which of the following method can be used to get the value of form parameter?

3. 3.Which of the following code is used to get names of the attributes in servlet?

4. 4.Which of the following code retrieves name and version of the protocol?

5. 5.Which of the following code encodes the specified URL for use in the sendRedirect method?

6. 6. Which of the following code can be used to write a cookie?

7. 7.Which of the following are valid servlet filters?

8. 8.Which of the following request attributes that an error-handling servlet can access to analyse the nature of error/exception?

9. 9.Which of the following code delete a cookie in servlet?

10. 10.Which of the following code is used to set auto refresh of a page after 5 seconds?

11. 11.Which of the following is true about service() method of servlet?

12. 12.Which of the following code is used to set content type of a page to be serviced using servlet?

13. 13.Which of the following code is used to get PrintWriter object in servlet?

14. 14.Which of the following code retrieves the name of the HTTP Method?

15. 15.Which of the following code retrieves session ID specified by the client?

16. 16.Which of the following code can be used to add a header with the given name and integer value?

17. 17.Which of the following code can be used to set the length of content of body of the response?

18. 18.Which of the following is true about javax.servlet.error.message?

19. 19.Which of the following code is used to add an attribute in a HTTP Session object in servlets?

20. 19.Which of the following code is used to add an attribute in a HTTP Session object in servlets?

21. 20. Which of the following code is used to set auto refresh of a page after 5 seconds?

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