EPDA Active Recall Questions (MCQs)

What will happen if you forget to close a PrintWriter in a servlet?
A. Servlet crashes
B. Compilation error
C. Possible memory leak or incomplete response
D. JSP stops working

C. Possible memory leak or incomplete response

Which of these can handle both GET and POST methods in a servlet?
A. doService()
B. doRequest()
C. doProcess()
D. doGet() and doPost()

D. doGet() and doPost()

What tag defines a custom error page in JSP?
A. <jsp:error>
B. <%@ errorPage %>
C. <jsp:exception>
D. <errorPage>

B. <%@ errorPage %>

Which tag is used to display conditional content?
A. <c:loop>
B. <c:if>
C. <c:eval>
D. <c:out>

B. <c:if>

What does fn:length(list) return?
A. Number of items in list
B. Length of longest string
C. Boolean
D. Loop index

A. Number of items in list

Which EJB is designed to be used across multiple users with a shared state?
A. Stateless
B. Stateful
C. Singleton
D. Message-Driven

C. Singleton

What does @EJB do in a servlet?
A. Declares an EJB as local
B. Injects an EJB instance
C. Defines a remote interface
D. Replaces @Bean

B. Injects an EJB instance