Servlets - Online Quiz

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

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.

Q 2 - When destroy() method of servlet gets called?

A - The destroy() method is called only once at the end of the life cycle of a servlet.

B - The destroy() method is called after the servlet has executed service method.

C - Both of the above.

D - None of the above.

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

A - response.getAttributeNames()

B - request.getAttributeNames()

C - Header.getAttributeNames()

D - None of the above.

Q 4 - Which of the following code retrieves the character encoding used in the body of this request?

A - new CharacterEncoding()

B - response.getCharacterEncoding()

C - request.getCharacterEncoding()

D - None of the above.

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

A - response.encodeRedirectURL(url)

B - request.encodeRedirectURL(url)

C - Header.encodeRedirectURL(url)

D - None of the above.

Q 6 - Which of the following code can be used to clear any data that exists in the buffer as well as the status code and headers?

A - request.reset()

B - response.reset()

C - response.resetBuffer()

D - None of the above.

Q 7 - Which of the following code can be used to set the locale of the response?

A - request.setLocale(locale)

B - response.setLocale(locale)

C - header.setLocale(locale)

D - None of the above.

Q 8 - Which of the following is true about javax.servlet.error.exception_type?

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.

Q 9 - Which of the following code is used to update an attribute in a HTTP Session object in servlets?

A - session.setAttribute(name,value)

B - session.alterAttribute(name,value)

C - session.updateAttribute(name,value)

D - None of the above.

Q 10 - Which of the following code is used to get country/region code in servlets?

A - request.getCountry()

B - Locale.getCountry()

C - response.getCountry()

D - None of the above.