SCWCD MATERIAL
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Unit-1: The Servlet Technology Model

Q40. Choose the servlet code fragment that gets a binary stream for writing an image or other binary type to the HttpServletResponse.
      A. java.io.printWriter out = response.getWriter( );  B. ServletOutputStream out = response.getOutputStream( );
C. java.io.PrintWriter out = new PrintWriter(response.getWriter ( ));   
D. ServletOutputStream out = response.getBinaryStream( );    

Option a is incorrect because it uses a character orented PrintWriter


Q41.Which methods are used by a servlet to handle from data form a client?

  [Choose all that apply]
A. HttpServlet.doHead( )    B. HttpServlet.doPost( )   
C. HttpServlet.doForm( )      D. ServletRequest.doGet( )
E. ServletRequest.doPost( )     F. ServletRequest.doForm( ) 

Q42.   Which of the following methods are declared in HttpServletRequest as
  opposed ServletRequest?           [Choose all that apply.]         

   A. getMethod( )   B. getHeader( ) C. getCookies( )    D. getInputStream( )  E. getParameterNames( )

  Options A,B and C all relate to components of an HTTP request.   

            
Q43.    How should servlet developers handle the HttpServlet’s service ( ) method when extending HttpServlet?
[Choose all that apply]

A. They should override the service( ) method in most cases.
B. They should call the service( ) method from doGet( ) or doPost( ) 
C. They should call the service( ) method from the init ( ) method.
  D. They should override at least one doXxx( ) method (such as doPost ( ) )    
Option D is correct developers typically focus on the doGet ( ), and doPost( ) methods

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