Servlets - Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Servlets Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - What are Servlets?
A - Java Servlets are programs that run on a Web or Application server.
Answer : C
Explaination
Java Servlets are programs that run on a Web or Application server and act as a middle layer between a request coming from a Web browser or other HTTP client and databases or applications on the HTTP server.
Q 2 - What is javax.servlet.http.HttpServlet?
Answer : B
Explaination
javax.servlet.http.HttpServlet is an abstract class.
Q 3 - Which of the following code is used to get names of the attributes in servlet?
A - response.getAttributeNames()
B - request.getAttributeNames()
Answer : B
Explaination
request.getAttributeNames() returns an enumeration containing the names of the attributes available to this request.
Q 4 - Which of the following code retrieves the query string that is contained in the request URL after the path?
Answer : C
Explaination
request.getQueryString() returns the query string that is contained in the request URL after the path.
Q 5 - Which of the following code indicates whether the response has been committed?
Answer : A
Explaination
response.isCommitted() returns a boolean indicating if the response has been committed.
Q 6 - Which of the following code can be used to add a date header?
A - response.addDateHeader(name,date)
B - request.addDateHeader(name,date)
Answer : A
Explaination
response.addDateHeader(name,date) adds a response header with the given name and date-value.
Q 7 - When init() method of filter gets called?
B - The init() method is called whenever the servlet being filtered is invoked.
Answer : A
Explaination
The init method is designed to be called only once. It is called by the web container to indicate to a filter that it is being placed into service.
Q 8 - How to create a cookie in servlet?
B - Use request.getCookie() method
Answer : A
Explaination
Create cookie using new operator on Cookie class.
Answer : B
Explaination
HTTP is a stateless protocol which means each time a client retrieves a Web page, the client opens a separate connection to the Web server and the server automatically does not keep any record of previous client request.
Q 10 - Which of the following code is used to set the session timeout in servlets?
A - session.setMaxInactiveInterval(interval)
B - response.setMaxInactiveInterval(interval)
Answer : A
Explaination
You can call public void setMaxInactiveInterval(int interval) method of session to set the timeout for a session individually.
