Baan Placement Paper - Logical Reasoning

Baan Previous Years Solved Sample Placement Papers

1. What exception is thrown when Servlet initialization fails?
   

   (a) IOException

   (b) ServletException (Ans)

   (c) RemoteException

2. How can a Servlet call a JSP error page?
   

   (a) This capability is not supported.

   (b) When the servlet throws the exception, it will automatically be caught by the calling JSP page.

   (c) The servlet needs to forward the request to the specific error page URL. The exception is passed along as an attribute named "javax.servlet.jsp.jspException". (Ans)

   (d) The servlet needs to redirect the response to the specific error page, saving the exception off in a cookie.

3. What is the key difference between using a `` and HttpServletResponse.sendRedirect()?
   

   (a) forward executes on the client while sendRedirect() executes on the server.

   (b) forward executes on the server while sendRedirect() executes on the client. (Ans)

   (c) The two methods perform identically.

4. Why are beans used in J2EE architecture instead of writing all the code in JSPs?
   

   (a) Allows separation of roles between web developers and application developers (Ans)

   (b) Allows integration with Content Management tools

5. Why are DB connections not written directly in JSPs?
   

   (a) Response is slow

   (b) Not a standard J2EE architecture

   (c) Load Balancing is not possible

   (d) All the above

   (e) Both (b) and (c) (Ans)

6. How are multiple EJB instances managed?
   

   (a) Connection Pooling

   (b) Caching of EJB instances

   (c) EJB Passivation

   (d) All the above (Ans)

7. EJB class should implement:
   

   (a) javax.ejb.EntityBean

   (b) javax.ejb.rmi

   (c) javax.ejb.EJBHome

   (d) javax.ejb.EJBObject

   (Ans: A)
8. Generally Servlets are used for complete HTML generation. If you want to generate partial HTMLs that include some static text (not hardcoded in Servlets) and dynamic text, what method do you use?
   

   (a) Serverside includes

   (b) JSP code in HTML

   (c) Not possible to generate incomplete HTMLs using Servlets

9. Which of the following cannot be used as the scope when using a JavaBean with JSP?
   

   (a) session

   (b) application

   (c) request

   (d) response

   (Ans: D)
10. Which is true about Servlets?
    

    (a) Only one instance of Servlet is created in memory

    (b) Multi-threading is used to service multiple requests

    (c) Both (a) & (b)

    (Ans: C)
11. What is a Temporary Servlet?
    

    (a) Servlet that is destroyed at runtime

    (b) Servlet that exists for a session

    (c) Servlet that is started and stopped for each request

    (Ans: C)
Electronics Based Questions
12. The breakdown mechanism in a lightly doped p-n junction under reverse biased condition is called:
    

    (a) avalanche breakdown

    (b) zener breakdown

    (c) breakdown by tunneling

    (d) high voltage breakdown

    (Ans: A)