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    Multiple Choice Questions On Java Servlets

    Uploaded by

    Aniruddh Kumar
    The document contains 10 multiple choice questions about Java servlets. It tests knowledge of servlet lifecycles, request and response methods, sessions, locales and error handling. The questions cover topics like retrieving parameter values, getting the protocol, setting character encoding and updating session attributes. Correct answers are provided along with short explanations for each question.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Multiple Choice Questions On Java Servlets

    Uploaded by

    Aniruddh Kumar
    644 views3 pages
    The document contains 10 multiple choice questions about Java servlets. It tests knowledge of servlet lifecycles, request and response methods, sessions, locales and error handling. The questions cover topics like retrieving parameter values, getting the protocol, setting character encoding and updating session attributes. Correct answers are provided along with short explanations for each question.

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    Multiple Choice Questions on Java Servlets

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    The document contains 10 multiple choice questions about Java servlets. It tests knowledge of servlet lifecycles, request and response methods, sessions, locales and error handling. The questions cover topics like retrieving parameter values, getting the protocol, setting character encoding and updating session attributes. Correct answers are provided along with short explanations for each question.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    644 views3 pages

    Multiple Choice Questions On Java Servlets

    Uploaded by

    Aniruddh Kumar
    The document contains 10 multiple choice questions about Java servlets. It tests knowledge of servlet lifecycles, request and response methods, sessions, locales and error handling. The questions cover topics like retrieving parameter values, getting the protocol, setting character encoding and updating session attributes. Correct answers are provided along with short explanations for each question.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 3

    Multiple Choice Questions on Java Servlets

    Q 1 - Which of the following is the correct order of servlet life cycle phase methods?
    A - init(), service(), destroy()
    B - initialize(), service(), destroy()
    C - init(), execute(), destroy()
    D - init(), service(), delete()

    Answer: A

    Explanation: 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?
    A - request.getParameter()
    B - request.getParameterValues()
    C - request.getParameterNames()
    D - None of the above.

    Answer: B

    Explanation: 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 locale in servlet?


    A - request.getlocale()
    B - response.getLocale()
    C - new Locale()
    D - None of the above.

    Answer: A

    Explanation: request.getlocale() returns the preferred Locale that the client will accept content in, based
    on the Accept-Language header.

    Q 4 - Which of the following code retrieves name and version of the protocol?
    A - Header.getProtocol()
    B - response.getProtocol()

    1
    C - request.getProtocol()
    D - None of the above.

    Answer: C

    Explanation: request.getProtocol() returns the name and version of the protocol the request.

    Q 5 - Which of the following code retrieves session ID specified by the client?


    A - request.getRequestedSessionId()
    B - response.getRequestedSessionId()
    C - Header.getRequestedSessionId()
    D - None of the above.

    Answer: A

    Explanation: request.getRequestedSessionId() returns the session ID specified by the client.

    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.

    Answer: B

    Explanation: response.reset() clears any data that exists in the buffer as well as the status code and
    headers.

    Q 7 - Which of the following code can be used to set the character encoding for the body of the
    response?
    A - response.setCharacterEncoding(charset)
    B - request.setCharacterEncoding(charset)
    C - header.setCharacterEncoding(charset)
    D - None of the above.

    Answer: A

    Explanation: response.setCharacterEncoding(charset) sets the character encodinge for the body of the
    response.

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

    2
    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.

    Answer: C

    Explanation: javax.servlet.error.status_code attribute gives status code which can be stored and analysed
    after storing in a java.lang.Integer 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.

    Answer: A

    Explanation: session.setAttribute() binds an object to this session, using the name specified.

    Q 10 - Which of the following code is used to get language code in servlets?


    A - response.getLanguage()
    B - Locale.getLanguage()
    C - request.getLanguage()
    D - None of the above.

    Answer: C

    Explanation: request.getLanguage() returns the language code in lower case for this locale in ISO 639
    format.

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