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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 the multiple values of a parameter like checkbox data?
B - request.getParameterValues()
Answer : B
Explaination
You call request.getParameterValues() method if the parameter appears more than once and returns multiple values, for example checkbox.
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 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 force any content in the buffer to be written to the client?
Answer : C
Explaination
response.flushBuffer() forces any content in the buffer to be written to the client.
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 - Which of the following request attributes that an error-handling servlet can access to analyse the nature of error/exception?
A - javax.servlet.error.status_code
B - javax.servlet.error.exception_type
Answer : D
Explaination
All of the above request attributes can be accessed by error-handling servlet.
Q 9 - Which of the following code is used to get an attribute in a HTTP Session object in servlets?
A - session.getAttribute(name)
B - session.alterAttribute(name)
Answer : A
Explaination
session.getAttribute() returns the object bound with the specified name in this session, or null if no object is bound under the name.
Q 10 - Which of the following code is used to get country/region code in servlets?
Answer : A
Explaination
request.getCountry() returns the country/region code in upper case for this locale in ISO 3166 2-letter format.