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 - When init() method of servlet gets called?
A - The init() method is called when the servlet is first created.
B - The init() method is called whenever the servlet is invoked.
Answer : A
Explaination
The init method is designed to be called only once. It is called when the servlet is first created, and not called again for each user request. So, it is used for one-time initializations, just as with the init method of applets.
Q 2 - Which of the following is true about HTTP Post method?
A - The POST method sends the encoded user information as a seperate message to page request.
Answer : C
Explaination
The POST method sends the encoded user information as a seperate message to page request. It is used to submit form data normally.
Q 3 - Which of the following code is used to get names of the parameters in servlet?
A - request.getParameterNames()
B - response.getParameterNames()
Answer : A
Explaination
request.getParameterNames() returns an Enumeration of String objects containing the names of the parameters contained in this request.
Q 4 - Which of the following code retrieves the value of a request parameter?
B - response.getParameter(name)
Answer : C
Explaination
request.getParameter(name) returns the value of a request parameter as a String, or null if the parameter does not exist.
Q 5 - Which of the following code retrieves the fully qualified name of the client making this request?
Answer : A
Explaination
request.getRemoteHost() returns the fully qualified name of the client that sent the request.
Q 6 - Which of the following code can be used to add a header?
A - request.addHeader(name,value)
B - response.addDateHeader(name,value)
Answer : B
Explaination
response.addHeader(name,date) adds a response header with the given name and value.
Q 7 - Which of the following code can be used to set the locale of the response?
Answer : B
Explaination
response.setLocale(locale) sets the locale of the response.
Q 8 - Which of the following is true about javax.servlet.error.message?
Answer : A
Explaination
javax.servlet.error.message attribute gives information exact error message which can be stored and analysed after storing in a java.lang.String data type.
Q 9 - Which of the following code sends a cookie in servlet?
A - response.addCookie(cookie);
B - response.sendCookie(cookie);
Answer : A
Explaination
response.addCookie(cookie) adds cookies in the HTTP response header.
Q 10 - Which of the following code is used to get language name in servlets?
A - response.getDisplayLanguage()
B - Locale.getDisplayLanguage()
Answer : C
Explaination
request.getDisplayLanguage() returns a name for the locale's language that is appropriate for display to the user.
