- Servlets Tutorial
- Servlets - Home
- Servlets - Overview
- Servlets - Environment Setup
- Servlets - Life Cycle
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- Servlets - Client Request
- Servlets - Server Response
- Servlets - Http Codes
- Servlets - Writing Filters
- Servlets - Exceptions
- Servlets - Cookies Handling
- Servlets - Session Tracking
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- Servlets - Handling Date
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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 - Which of the following is the correct order of servlet life cycle phase methods?
A - init(), service(), destroy()
B - initialize(), service(), destroy()
Answer : A
Explaination
The servlet is initialized by calling the init () method. The servlet calls service() method to process a client's request. The servlet is terminated by calling the destroy() method.
Q 2 - Which of the following method can be used to get complete list of all parameters in the current request?
B - request.getParameterValues()
Answer : C
Explaination
You call request.getParameterNames() method to get complete list of all parameters in the current request.
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 Internet Protocol (IP) address of the client that sent the request?
Answer : A
Explaination
request.getRemoteAddr() returns the Internet Protocol (IP) address of the client that sent the request.
Q 5 - Which of the following code encodes the specified URL by including the session ID in it?
Answer : A
Explaination
response.encodeURL(url) encodes the specified URL by including the session ID in it, or, if encoding is not needed, returns the URL unchanged.
Q 6 - Which of the following code can be used to send an error response to the client using the specified status code and error message?
A - request.sendError(statusCode,message)
B - response.sendError(statusCode,message)
Answer : B
Explaination
response.sendError(statusCode,message) sends an error response to the client using the specified status code and error message.
Q 7 - Which of the following is the correct order of filter life cycle phase methods?
A - init(), service(), destroy()
B - initialize(), service(), destroy()
Answer : A
Explaination
init() method is called by the web container to indicate to a filter that it is being placed into service. doFilter() method is called by the container each time a request/response pair is passed through the chain due to a client request for a resource at the end of the chain. destroy() method is called by the web container to indicate to a filter that it is being taken out of service.
Q 8 - Which element of web.xml is used to specify the error handler in servlets?
Answer : A
Explaination
You would have to use the error-page element in web.xml to specify the invocation of servlets in response to certain exceptions or HTTP status codes.
Q 9 - Which of the following code is used to get a HTTP Session object in servlets?
Answer : A
Explaination
request.getSession() is used to get a HTTP Session object in servlets.
Q 10 - Which of the following code is used to get language code in servlets?
Answer : C
Explaination
request.getLanguage() returns the language code in lower case for this locale in ISO 639 format.