Top JSP multiple choice questions

1. Choose the statement that best describes the relationship between JSP and servlets:

A. Servlets are built on JSP semantics and all servlets are compiled to JSP pages for runtime usage.
B. JSP and servlets are unrelated technologies.
C. Servlets and JSP are competing technologies for handling web requests. Servlets are being superseded by JSP, which is preferred. The two
technologies are not useful in combination.
D. JSPs are built on servlet semantics and all JSPs are compiled to servlets for runtime usage.

Ans: D

2. What is a benefit of using JavaBeans to separate business logic from presentation markup within the JSP environment?

A. It allows the JSP to access middleware.
B. It creates a cleaner role separation between the web-production team and the software development team, so that the web-production team can
focus on presentation markup, while the software team can focus on building reusable software components for helping to generate dynamic displays.
C. It provides a dynamic markup environment, such that JavaBeans are integrated seamlessly with the template presentation content, in order to
create the dynamic display for the client.
D. It provides the developer with full access to the Java 2 Platform Enterprise Edition (J2EE), which is unavailable from outside the JavaBean
environment.

Ans: B

3. Why use RequestDispatcher to forward a request to another resource, instead of using a sendRedirect?

A. Redirects are no longer supported in the current servlet API.
B. Redirects are not a cross-platform portable mechanism.
C. The RequestDispatcher does not use the reflection API.
D. The RequestDispatcher does not require a round trip to the client, and thus is more efficient and allows the server to maintain request state.

Ans: D

4. What alternatives exist to embedding Java code directly within the HTML markup of your JSP page?

A. Moving the code into your session manager.
B. Moving the code into scriptlets.
C. Moving the code into JavaBeans and servlets.
D. Moving the code into a transaction manager.

Ans: C

5. What type of scriptlet code is better-suited to being factored forward into a servlet?

A. Code that deals with logic that is common across requests.
B. Code that deals with logic that is vendor specific.
C. Code that deals with logic that relates to database access.
D. Code that deals with logic that relates to client scope.

Ans: A

6. Choose the statement that best describes how to connect JSP pages and Enterprise JavaBeans (EJBs):

A. Lookup the EJBs from within a JSP, but use the EJBs from within a basic JavaBean.
B. Lookup and use the EJBs from a separate business delegate. The JavaBeans that work with JSP pages are clients to these business delegates and
know nothing about EJB specifics.
C. Lookup and use the EJBs from within a JSP page, but only as remote references.
D. Lookup the EJBs from within a servlet, delegating usage to specific JSP pages.

Ans: B

7. Are custom tags available in JSP 1.0? If not, how else might you implement iteration from within a JSP?

A. Yes, but the only tags available relate to database access.
B. No. To iterate over a collection of values, one must use scriptlet code.
C. No, but there is a standard tag that may be used.
D. Yes, but custom tags will not help developers create tags for use in iterating over a collection.

Ans: B

8. What is the initial contact point for handling a web request in a Page-Centric architecture?

A. A JSP page.
B. A JavaBean.
C. A servlet.
D. A session manager.

Ans: A

9. What is the difference between doing an include or a forward with a RequestDispatcher?

A. The forward method transfers control to the designated resource, while the include method invokes the designated resource, substitutes its
output dynamically in the display, and returns control to the calling page.
B. The two methods provide the same functionality, but with different levels of persistence.
C. The forward method is deprecated as of JSP 1.1 and the include method should be used in order to substitute portions of a dynamic display at
runtime.
D. The include method transfers control to a dynamic resource, while the forward method allows for dynamic substitution of another JPS pages
output, returning control to the calling resource.

Ans: A

10. What line of code below might be combined in the same JSP page with a validation guard (for example, <% bean.validationGuard(); %> ), in order to create an alternate flow of control for scenarios in which exceptions arise. The validationGaurd method might throw an exception, which should cause the flow of control to continue in another user-defined page (assume JSP 1.0).

A.
B. <%@ page language=”java” buffer=”8k” %>
C.
D. <%@ page language=”java” errorPage=”errorPage.jsp” buffer=”8k” %>

Ans: D

11. JSP stands for __ ?

A. Java Server Pages
B. Java Service Page

Ans: A

12. What is a Hidden Comment in JSP?

A. <%– –%>
B. <%– %>

Ans: A

13. What is a Expression in JSP?

A. <%= %>
B. <% %>

Ans: A

14. pageContext is an implicit object in jsp.

A. TRUE
A. FALSE

Ans: A

15. config is an implicit object in jsp.

A. TRUE
B. FALSE

Ans: A

16. What is the result of adding following header? response.addDateHeader(“Expires”,-1);

A. To ensure the page does not get cached at the client browsers.
B. To ensure the page is accessible on any date and page doesnt get expired.

Ans: A

17. With the above code, assuming the servlet is configured properly and registration logic works good, trying to register user fails.

Choose one reason.

A. The registration fails because, above servlet dont have doGet() method.
B. The registration fails because, above servlet dont have service() method.

Ans: A

18. Which of the following statements is true regarding the scope of ‘request’ in JSP?

A. Objects with request scope are accessible from pages processing the same request where they were created.
B. All references to the object shall be released after the request is processed; in particular, if the request is forwarded to a resource in the
same runtime, the object is still reachable.
C. References to objects with request scope are stored in the request object.
D. All of the above.

Ans: A

19. URL encoding is the method of replacing all the spaces and other extra characters into their corresponding _______ Characters?

A. Hex
B. Binary
C. Octal
D. Decimal

Ans: A

20. Which of the scripting of JSP not putting content into service method of the converted servlet?

A. Declarations
B. Scriptlets
C. Expressions
D. None of the above

Ans: A