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Basic JSP and Servlets MCQ

1.
Which statement among the following apply to redirecting a HTTP request to another URL?

The path must be absolute

The path must be relative

The redirect method must be called before the response body is committed, otherwise an IllegalStateException is thrown

The path may be relative or absolute

Answer

Correct Answer: The redirect method must be called before the response body is committed, otherwise an IllegalStateException is thrown

Note: This Question is unanswered, help us to find answer for this one

2.
How do you create the Parameter buttons the toolbar for component com_hello?

JToolBarHelper::preferences('com_hello', '500');

JToolBarHelper::params('com_hello', '500');

global $mainframe; $mainframe->createButton('params', '500');

Answer

Correct Answer: JToolBarHelper::preferences('com_hello', '500');

Note: This Question is unanswered, help us to find answer for this one

3.
Which of the following methods must you use to deny access from an external direct call?

defined('_VALID_MOS') or die('Direct Access to this location is not allowed.')

defined( '_JEXEC' ) or die( 'Restricted access' )

defined( '_JOOMLA' ) or die( 'Restricted access' )

defined( '_JLEXEC' ) or die( 'Restricted access' )

Answer

Correct Answer: defined('_VALID_MOS') or die('Direct Access to this location is not allowed.')

Note: This Question is unanswered, help us to find answer for this one

4.
What is the role of the template metadata file in the system?

It contains the basic authorship information.

It contains information about the files that make up the template.

It contains information about the parameters that will be available for configuration through the administrator interface.

All of these.

Answer

Correct Answer: All of these.

Note: This Question is unanswered, help us to find answer for this one

5.
Why does Joomla use templateDetails.xml files?

To access the template from within by using code;

To debug style sheets;

To provide information and allow selection of the template within the template manager;

All of these.

Answer

Correct Answer: To provide information and allow selection of the template within the template manager;

Note: This Question is unanswered, help us to find answer for this one

6.
From which package are the classes (i.e JSite, JAdministrator and JInstallation) which make up the Joomla CMS application extended?

Installer

Application

Template

Database

Answer

Correct Answer: Installer

Note: This Question is unanswered, help us to find answer for this one

7.
Which interface and method name should be used to retrieve HTTP request header information?

HttpServletRequest.getHeaderNames

ServletRequest.getNames

ServletRequest.getHeadNames

None of the above

Answer

Correct Answer: HttpServletRequest.getHeaderNames

Note: This Question is unanswered, help us to find answer for this one

8.

Assume the custom tag is GLOOP and the prefix is TWONG. Which of the following is the syntax for an empty custom tag?

TWONG:GLOOP/>

<GLOOP:TWONG/>

<GLOOP:TWONG></GLOOP:TWONG>

<TWONG:GLOOP></TWONG:GLOOP>

Answer

Correct Answer: TWONG:GLOOP/>

Note: This Question is unanswered, help us to find answer for this one

9.

How would you use a bean in a JSP page?

jsp:useBean name="houseLotBean" scope="response" class="session.Realestate"/>

<jsp:useBean id="houseLotBean" scope="session"><jsp:useBean>

<jsp:useBean id="houseLotBean" scope="session" class="session.Realestate"/>

<jsp:useBean scope="session" class="session.Realestate"/>

Answer

Correct Answer: <jsp:useBean id="houseLotBean" scope="session" class="session.Realestate"/>

Note: This Question is unanswered, help us to find answer for this one

10.

Which of the following options is a valid declaration?

%! String name="Patricia" %>

<%! String name="Patricia"; %>

<% String name="Devyn" %>

<% public String name="Devyn"; %>

Answer

Correct Answer: <%! String name="Patricia"; %>

Note: This Question is unanswered, help us to find answer for this one

11.

Assuming the tag library is in place and the tag handler is correct, which of the following is the correct way to use a custom tag in a JSP page?

yourLibrary="whatColorlslt" color="red"/>

<yourLibrary:whatColorlslt color="red"/>

<yourLibrary.whatColorlslt color="red"/>

Answer

Correct Answer: <yourLibrary:whatColorlslt color="red"/>

Note: This Question is unanswered, help us to find answer for this one

12.

What is the WebApp deployment descriptor element name for the Servlet Context Initialization Parameters?

context-init-param>

<context-param>

<init-param>

<context-init>

Answer

Correct Answer: <context-param>

Note: This Question is unanswered, help us to find answer for this one

13.
Consider the following statement:

PreparedStatement ps=con.prepareStatement("INSERT INTO ORDER (CUSTOMER_ID ,PRICE) VALUES(?,?)");

Which of the following should come after this statement?

ps.clearParameters(); ps.setInt(1,3); ps.setDouble(2,790.50); ps.executeUpdate(sql);

ps.clearParameters(); ps.setInt(1,3); ps.setDouble(2,790.50); ps.executeUpdate();

ps.clear(); ps.setInt(1,3); ps.setDouble(2,790.50); ps.executeUpdate(sql);

ps.clearParameters(); ps.setInt(1,3.09); ps.setDouble(2,790.50); ps.execute(sql);

ps.clearParameters(); ps.setDouble(2,790.50); ps.execute(sql);

Answer

Correct Answer: ps.clearParameters(); ps.setInt(1,3); ps.setDouble(2,790.50); ps.executeUpdate();

Note: This Question is unanswered, help us to find answer for this one

14.
After executing the following code, resultvar contains false. What should the next step be?

boolean resultvar=stmt.execute(sql);

stmt.getResultSet();

stmt.getUpdateCount();

stmt.executeUpdate();

stmt.executeQuery();

stmt.executeUpdateQuery();

Answer

Correct Answer: stmt.executeUpdate();

Note: This Question is unanswered, help us to find answer for this one

15.
Which of the following is not a JSP implicit object?

out

response

page

Answer

Correct Answer: in

Note: This Question is unanswered, help us to find answer for this one

16.
Which of the following statements are true regarding the structure of a WebArchive file?

It has a jar extension

It is a JAR archive of the WebApplication structure

It has a war extension

It is extracted by the container upon the first call to anyservlet it contains

Answer

Correct Answer: It is a JAR archive of the WebApplication structure

Note: This Question is unanswered, help us to find answer for this one

17.
Which of the following statements are true regarding the HTTP GET method?

There is a limit on how much data this HTTP method can send

There is no limit on how much data this HTTP method can send

This HTTP method is the fastest

This HTTP method is used when you click on an HTML link

Answer

Correct Answer: There is a limit on how much data this HTTP method can send

Note: This Question is unanswered, help us to find answer for this one

18.
Which of the following statements are best associated with the HTTPPOST method?

This HTTP method is the one most frequently used by browsers

There is no limit on how much data this HTTP method can send

There is a limit on how much data this HTTP method can send

This method is most often used to submit form data

Answer

Correct Answer: There is no limit on how much data this HTTP method can send

Note: This Question is unanswered, help us to find answer for this one

19.
Which interface and method name should be used to acquire a text stream for the response?

ServletResponse.getOutputStream

ServletResponse.getWriterStream

ServletResponse.getTextStream

ServletResponse.getWriter

Answer

Correct Answer: ServletResponse.getWriter

Note: This Question is unanswered, help us to find answer for this one

20.
With regard to the servletcontextlistener interface, which of the following methods is valid?

contextListenerEvent

contextListenerInitialized

contextInitialized

contextListenerDestroyed

Answer

Correct Answer: contextInitialized

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21.
Which statement is true regarding ServletContext Initialization Parameters in the deployment descriptor?

They are accessible by all servlets in a given web application

They are accessible by all servlets in a given session

They are accessible by all servlets in a given HTTP request

They are accessible by all servlets in a given container

Answer

Correct Answer: They are accessible by all servlets in a given web application

Note: This Question is unanswered, help us to find answer for this one

22.
With regard to the destroy lifecycle method, identify the correct statements about its purpose or about how and when it is invoked.

It gives the servlet an opportunity to clean up resources

Like try-catch, it is called upon an exception

It is rarely used but can be called to remove a servlet from memory

It isn't called if the server crashes

Answer

Correct Answer: It gives the servlet an opportunity to clean up resources

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23.
Read the following code snippet:

1 <libraryPrefix:handlerName parameterNAme="value">

2 <%=23*counter %>

3 <b>Congratulations!</b>

Which of the following is the correct way to complete the above code snippet?

</libraryPrefix:handlerName>

</libraryPrefix:handlerName paremeterName="value">

</handlerName>

Answer

Correct Answer: </libraryPrefix:handlerName>

Note: This Question is unanswered, help us to find answer for this one

24.
Which design pattern did technical designers of JSP use to provide centralized dispatching of requests via a controller servlet?

Model-view-Controller

Facade

Server-Client

Publish-Subscribe

Answer

Correct Answer: Model-view-Controller

Note: This Question is unanswered, help us to find answer for this one

25.
Which method is called by the servlet container just after the servlet is removed from service?

public void finalize() {// code...}

public void destroy() {// code...}

public void destroy()throws ServletException {// code...}

public void finalize()throws ServletException {// code...}

Answer

Correct Answer: public void destroy() {// code...}

Note: This Question is unanswered, help us to find answer for this one

26.
Which of the following is the listener interface for servlet context attributes?

ContextAttributeListener

ServletContextAttributeListener

ServletAttributeListener

ServletContextListener

Answer

Correct Answer: ServletContextAttributeListener

Note: This Question is unanswered, help us to find answer for this one

27.
Which of the following is a JSP implicit object?

objRequest

Request.send

request

servlet

Answer

Correct Answer: request

Note: This Question is unanswered, help us to find answer for this one

28.
Which of the following is the name of the cookie used by Servlet Containers to maintain

session information?

SESSIONID

SERVLETID

JSESSIONID

CONTAINERID

Answer

Correct Answer: JSESSIONID

Note: This Question is unanswered, help us to find answer for this one

29.
Which design pattern reduces network traffic by acting as a caching proxy of a remote object?

DataAccess Object

Model-View-Controller

Value Object

Business Delegate

Answer

Correct Answer: Value Object

Note: This Question is unanswered, help us to find answer for this one

30.
Which design pattern is used to decouple presentation from core data access functionality?

BusinessDelegate

DataAccess Object

ModelView Controller

Value Object

Answer

Correct Answer: ModelView Controller

Note: This Question is unanswered, help us to find answer for this one

31.
With regard to the service() lifecycle method, identify two correct statements about its purpose or about how and when it is invoked.

Upon completion it calls the destroy method

It is called whenever the servlet is requested

It is called after the init method is called

It is only called when the servlet is first requested

Answer

Correct Answer: It is called whenever the servlet is requested

Note: This Question is unanswered, help us to find answer for this one

32.
Which of the following are used by Servlet Containers to maintain session information?

Hidden form fields

HTTPS protocol information

URL rewriting

Answer

Correct Answer: Cookies

Note: This Question is unanswered, help us to find answer for this one

33.
Which JSP action retrieves the value of a property from a properly declared JavaBean in a JSP page?

jsp:getProperty

jsp:getParameter

jsp:getAtrribute

jsp:getValue

Answer

Correct Answer: jsp:getProperty

Note: This Question is unanswered, help us to find answer for this one

34.
If cookies are turned off on the client, which two methods still work with the session ID?

response.getSessionId()

encodeRedirectURL()

sessionRedirectURL()

encodeURL()

Answer

Correct Answer: encodeRedirectURL()

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35.
What output will be sent to the browser by the following code snippet?

<!—
Que <%="Reader"%>
-->

'Que Reader' within HTML comment markers

This will cause an error

Que <%="Reader"%> within HTML comment markers

This is a comment so it is ignored by the container

Answer

Correct Answer: 'Que Reader' within HTML comment markers

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36.
What does the container do with the following code snippet?

The container passes this line of code through to the client

The container includes this file statically

The container includes this file dynamically

The container will throw an exception

Answer

Correct Answer: The container passes this line of code through to the client

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37.
Assuming the servlet method for handling HTTPGET requests is doGet(HttpServletRequest req, HTTPServletResponse res), how do you get a request parameter in that servlet?

String value=req.getInitParameter(10);

String value=req.getInitParameter("product");

String value=res.getParameter("product");

String value=req.getParameter("product");

Answer

Correct Answer: String value=req.getParameter("product");

Note: This Question is unanswered, help us to find answer for this one

38.
Which method in the HttpServlet class corresponds to the HTTPPUT method?

put

doPut

httpPut

putHttp

Answer

Correct Answer: doPut

Note: This Question is unanswered, help us to find answer for this one

39.
Which interface provides access to request scoped attributes?

ServletContext

ServletRequest

ServletConfig

None of these

Answer

Correct Answer: ServletRequest

Note: This Question is unanswered, help us to find answer for this one

40.
What is Template Data?

The JSP blueprint or pattern

The plain text (such as HTML) outside JSP tags(non java) in a JSP page

The taglib XML namespace

Answer

Correct Answer: The taglib XML namespace

Note: This Question is unanswered, help us to find answer for this one

41.
Which of the following options is a valid expression?

<%! String name="Patricia" %>

<%! String name="Patricia"; %>

<%=(new java.util.Date()).toLocaleString() %>

<% public String name="Devyn"; %>

Answer

Correct Answer: <%=(new java.util.Date()).toLocaleString() %>

Note: This Question is unanswered, help us to find answer for this one

42.
Suppose you had a servlet that simply returned an error message because that resource was forbidden to that user. Read the following code snippet:

1.public void service(HttpServletRequestrequest,

2.HttpServletResponseresponse)

3.throws ServletException, IOException

4. {

5.

6. }

What code would you type on line 5 to return an error message to the requesting client?

response.sendError(HTTPServletResponse.SC_FORBIDDEN,"Error");

response.setStatus(HTTPServletResponse.SC_FORBIDDEN,"Error");

response.sendError(Response.SC_FORBIDDEN,"Error");

response.setStatus(SC_FORBIDDEN);

Answer

Correct Answer: response.sendError(HTTPServletResponse.SC_FORBIDDEN,"Error");

Note: This Question is unanswered, help us to find answer for this one

43.
What is the file name of the WebApp deployment descriptor?

web.xml

deploy.xml

init.xml

config.xml

Answer

Correct Answer: web.xml

Note: This Question is unanswered, help us to find answer for this one

44.
Which statement is true regarding a servlet context listener?

An object that implements a context listener is notified when its request objects are created or destroyed

An object that implements a context listener is notified when its Web App context is created or destroyed

An object that implements a context listener is notified when its Web App deployment descriptor defines it to be notified

An object that implements a context listener is notified when its sessions are created or destroyed

Answer

Correct Answer: An object that implements a context listener is notified when its Web App context is created or destroyed

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45.
Which among the following objects is the best choice to share information between pages for a single user?

application

page

request

session

Answer

Correct Answer: session

Note: This Question is unanswered, help us to find answer for this one

46.
Read the following code snippet and answer the question based upon it:

<taglib>
<taglib-uri>
http://www.yourcompany.com/you TagLibrary
</taglib-uri>
<taglib-location>
/WEB-INF/yourTagLibrary.tld
</taglib-location>
</taglib>

From the statements given below, which one applies to the code snippet?

The taglib directive can reference a TLD by name

This tag goes into the WEB-INF/myApplication/web.xml file

This definition is incorrect because the taglib-uri should have been uri

This definition is incorrect because the taglib should have been tag

Answer

Correct Answer: The taglib directive can reference a TLD by name

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47.
Which method in the HttpServlet class corresponds to the HTTPPOST method?

postHttp

doPost

post

getPost

Answer

Correct Answer: doPost

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48.
Which of following interfaces can make a servlet thread safe?

Runnable

Serializable

SingleThreadModel

Servlets can't be made thread safe

Answer

Correct Answer: SingleThreadModel

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49.
In which directory do you place servlet class files?

WEB-INF\servlets

webapp\servlets

WEB-INF\classes

WEB-INF\

Answer

Correct Answer: WEB-INF\classes

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50. Which of following interfaces can make a servlet thread safe?

Runnable

synchronization

Servlets can't be made thread safe<br>

None of the above

Answer

Correct Answer: Servlets can't be made thread safe<br>

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51. When using HTML forms which of the following is true for POST method?

POST allows secure data transmission over the http method

POST allows users to bookmark URLs with parameters

The POST method should not be used when large amount of data needs to be transferred

POST method sends data in the body of the request

Answer

Correct Answer: POST method sends data in the body of the request

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52. What is the likely outcome from running the code below? protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { RequestDispatcher dispatcher = getServletContext().getNamedDispatcher("/ServletB"); dispatcher.forward(request, response); }

ServletB can obtain request attribute javax.servlet.forward.request_uri

NullPointerException

DispatcherNotFoundException

Runtime error because of incorrectly formed parameter to getNamedDispatcher() method.

Answer

Correct Answer: NullPointerException

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53. When comparing servlet initialisation parameters to context intialisation parameters, which is true among the following?

In their respective DD tags, they both have a <param-name> and a <param-value> tag

Their respective DD tags are both placed directly under the <web-app> tag

Both can be directly accessed from a JSP

Only changes to context initialization parameters in the DD can be accessed without redeploying the web application

Answer

Correct Answer: In their respective DD tags, they both have a <param-name> and a <param-value> tag

Note: This Question is unanswered, help us to find answer for this one

54. What is true about the life cycle of a servlet?

The destroy() method is invoked after every invocation of doGet() compiles

Each time doPost() is invoked, it runs in its own thread

The service() method is the first method invoked by the container when a new request is received.

The service() method is invoked by either doPost() or doGet() after they’ve completed a request

Answer

Correct Answer: Each time doPost() is invoked, it runs in its own thread

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55.

Include static page into a JSP page

throw an exception

Invoke a Servlet from a JSP page.

forward to another servlet

redirect to another resource

Answer

Correct Answer: Invoke a Servlet from a JSP page.

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56. How can you make the JSP class implement the SingleThreadModel interface?

<%@ page isThreadSafe=

<%@ page ThreadSafe=

<%@ page isThreadSafe=

Answer

Correct Answer: <%@ page isThreadSafe=

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57. javax.servlet.jsp.JspPage extends which of the following interfaces?

GenericServlet

HttpServlet

Servlet

HttpJspPage

Answer

Correct Answer: Servlet

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58. Which of the following is an INVALID attribute for tag directive?

dynamic-attributes

display-name

body-content

tag-attributes

Answer

Correct Answer: tag-attributes

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59. What is the limit of data to be passed from HTML when doGet() method is used?

Answer

Correct Answer: 2k

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60. Where in JSP page source can EL functions be used?

In the body of a tag where body-content is set to tagdependent

Within a JSP expression

Within a JSP scriptlet

In the body of a tag where body-content is set to JSP

Answer

Correct Answer: In the body of a tag where body-content is set to JSP

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61. Which of the following object scope is defined as follows : Objects with this scope are accessible from pages processing requests in the same application as the one in which they were created?

session

page

application

request

Answer

Correct Answer: application

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62. Which of the following is not a valid java bean (POJO) scope in JSP?

response

session

request

application

Answer

Correct Answer: response

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63. Why do you get this error? NoClassDefFoundError: org.apache.commons.lang.StringUtils. 1. The given class could not be found. 2. The given class could be found, but something went wrong when initializing it 3. None of them

Answer

Correct Answer: 2

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64. Which of the following is valid about 'page' JSP directive?

Includes the contents of a file into the JSP at translation time

Controls properties of the entire application

Makes a custom tag library available within the including page

Controls properties of the JSP

Answer

Correct Answer: Controls properties of the JSP

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65. A programmer needs to update a live, running servlet’s initialization parameters so that the web application will begin to use the new parameters immediately. In order to accomplish this, which must be true (although not necessarily sufficient)? 1. The container must destroy and then reinitialize the servlet 2. The servlet’s constructor must retrieve the updated DD parameter from the servlet’s ServletConfig object 3. For each parameter, the DD must have a separate <init-param> tag 4. For each parameter, you must modify a DD tag that specifies the name of the servlet, the name of the parameters, and the new value of the parameter.

2 and 4

1 and 3

2 and 3

1 only

Answer

Correct Answer: 1 and 3

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66. JSP implicit object 'application' is an object of which of the following class?

javax.servlet.ServletContext

javax.servlet.ServletConfig

javax.servlet.Application

javax.servlet.Context

Answer

Correct Answer: javax.servlet.ServletContext

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67. The http GET, PUT, and DELETE verbs are idempotent. What does the term "idempotent" stand for?

None of the above

The same operation applied multiple times yields the same result

This term has nothing to do with http verbs

The same operation applied multiple times yields different results

Answer

Correct Answer: The same operation applied multiple times yields the same result

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68. Given a servlet containing the following code, what is the outcome of attempting to compile and run the servlet? ServletContext context = getServletContext(); String s = context.getAttribute(

String s has a valid directory as its value

String s has a null value

The servlet won’t compile

The servlet won’t run

Answer

Correct Answer: The servlet won’t compile

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69. JSP implicit object 'exception' is an object of which of the following classes?

java.lang.Throwable

java.lang.Exception

java.lang.JSPException

java.lang.RunTimeException

Answer

Correct Answer: java.lang.Throwable

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70. Which of the following method is called before the page service any requests?

jspService()

_jspInit()

init()

jspInit()

Answer

Correct Answer: jspInit()

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71. What results from a call to the getInitParameterNames() method on ServletContext when there are no context parameters set up in the deployment descriptor?

null is returned

A NoParametersExistException is thrown

An empty Enumeration object is returned

An ArrayList object of size zero is returned

Answer

Correct Answer: An empty Enumeration object is returned

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72. JSP implicit object 'out' is an object of which of the following classes?

DataOutputStream

OutputStream

PrintStream

JspWriter

Answer

Correct Answer: JspWriter

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73. Which of the following HTTP method sends the same response as request?

HEAD

TRACE

OPTIONS

DEBUG

Answer

Correct Answer: TRACE

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74. Considering the following Servlet code, choose the statement which is true: package com.nullhaus; import javax.servlet.annotation.; import javax.servlet.http.; @WebServlet("nullHausServlet") public class NullServlet extends HttpServlet { }

This is valid usage of @WebServlet annotations which creates a Servlet with “nullHausServlet” url-pattern value

This is an invalid usage of @WebServlet annotations because of the wrongly formed url-pattern value

This code doesn’t compile, because NullHausServlet need to implement one of doGet(-), doPost(-), etc. methods

This is valid usage of @WebServlet annotations which creates a Servlet with “nullHausServlet” name

Answer

Correct Answer: This is an invalid usage of @WebServlet annotations because of the wrongly formed url-pattern value

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75. By default, the servlet API uses a ______ to store a session ID.

request

response

session

sessionfactory

Answer

Correct Answer: cookie

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76. Which statements are true: a. The element (subelement of ) set to “false” forces the container to make the servlet unreachable for request to the defined url-pattern, b. The element (subelement of ) set to “false” forces the container to make the request for the servlet respond with HTTP Code 503 (Service unavailable), c. The web fragment is merged into the final Deployment Descriptor after the web fragment related annotations are processed, d. All web fragments are processed together (in a batch) and all are merged into the final Deployment Descriptor before the web fragments’ related annotations are processed.

b and d

b and c

a and b

a only

Answer

Correct Answer: a only

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77. Which methods are needed to get the complete and exact URL that causes the call to arrive at the servlet? 1. getRequestURL() 2. getQueryString() 3. Both of them 4. None of them

Answer

Correct Answer: 3

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78. Which of the following is an INVALID implicit EL objects?

applicationScope

session

requestScope

pageScope

Answer

Correct Answer: session

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79. Which one is not a part of the JSTL library group?

Core

XML

HTML

SQL

Answer

Correct Answer: HTML

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80. Which of the following methods can be used to get initialization and startup parameters of a servlet?

getServletInfo

init

service

getServletConfig

Answer

Correct Answer: getServletConfig

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81. Which of the following classes has an implementation of getSession method that returns an HttpSession object?

SessionContext

SessionConfig

HttpServletRequest

HttpServletResponse

Answer

Correct Answer: HttpServletRequest

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82. Which of the following is not a 'page' directive attribute?

extends

language

implements

import

Answer

Correct Answer: implements

Note: This Question is unanswered, help us to find answer for this one

83. Which types can be used in conjunction with HttpServletResponse methods to stream output data?

java.io.FileOutputStream

java.io.PrintStream

java.io.OutputStream

java.io.PrintWriter

Answer

Correct Answer: java.io.PrintWriter

Note: This Question is unanswered, help us to find answer for this one

84. Objects which when compiled down are contained in (a) ____ file.

JSP

jar

kornshell

txt

Answer

Correct Answer: jar

Note: This Question is unanswered, help us to find answer for this one

85. Once the JSP has been requested and the page is loaded and initialized, the JSP engine calls the:

_jspService() method

jspDestroy() method

jspInit() method

jspPreRender() method

Answer

Correct Answer: _jspService() method

Note: This Question is unanswered, help us to find answer for this one

86. Which of the following is not a valid implicit object in a JSP?

out

context

response

request

Answer

Correct Answer: context

Note: This Question is unanswered, help us to find answer for this one

87. Which of the following methods is abstract in HttpServlet?

service

doPost

doGet

It has no abstract methods

Answer

Correct Answer: It has no abstract methods

Note: This Question is unanswered, help us to find answer for this one

88. Which of the following statement correctly describe attribute 'buffer'?

By default, the page output is buffered with an implementation buffer size no smaller than 80 MB

It indicates whether the content output from the page will be buffered

By default, the page output is buffered with an implementation buffer size no smaller than 800 MB

By default, the page output is buffered with an implementation buffer size no smaller than 8 MB

Answer

Correct Answer: It indicates whether the content output from the page will be buffered

Note: This Question is unanswered, help us to find answer for this one

89. How can you call a servlet to autofill a dropdown list which depends on selection from previous 2 dropdown lists? 1. Print all possible values of the 2nd and 3rd dropdown out as a Javascript object 2. Make use of XMLHttpRequest in Javascript to fire an asynchronous request to a servlet during the onchange event 3. Both of them 4. None of them

Answer

Correct Answer: 3

Note: This Question is unanswered, help us to find answer for this one

90. When might a JSP get translated (Choose all that apply)? a. When the application is started b. When the developer compiles code in the src folder c. The first time a user requests the JSP d. After jspdestroy() is called, it gets retranslated

a and d

a and c

a only

c and d

Answer

Correct Answer: a and c

Note: This Question is unanswered, help us to find answer for this one

91. Which of the following is a valid JSP expression?

<%some-java-expression %>

<%= some-java-expression ;%>

<%some-java-expression ;%>

<%= some-java-expression %>

Answer

Correct Answer: <%= some-java-expression %>

Note: This Question is unanswered, help us to find answer for this one

92. Which of the following provides a handle to access page directive attributes in the scripting environment?

application

pageContext

config

context

Answer

Correct Answer: pageContext

Note: This Question is unanswered, help us to find answer for this one

93. If req is a reference to an HttpServletRequest and there is no current session, what is true about req.getSession() ?

Invoking req.getSession(false) will return a new session

Invoking req.getSession() will return null

Invoking req.getSession(true) will return a new session

Invoking req.getSession(null) will return a new session

Answer

Correct Answer: Invoking req.getSession(true) will return a new session

Note: This Question is unanswered, help us to find answer for this one

94. Which of the following is a Scriplet?

<% Java statements %>

<%! declarations %>

<%= Java expression %>

<%-- Comment --%>

Answer

Correct Answer: <% Java statements %>

Note: This Question is unanswered, help us to find answer for this one

95. Which of the following root element provides the global configuration information for the JSP files in a Web application?

jsp-config

taglib

taglib-uri

jsp-property-group

Answer

Correct Answer: jsp-config

Note: This Question is unanswered, help us to find answer for this one

Basic JSP and Servlets MCQ

1. Which statement among the following apply to redirecting a HTTP request to another URL?

2. How do you create the Parameter buttons the toolbar for component com_hello?

3. Which of the following methods must you use to deny access from an external direct call?

4. What is the role of the template metadata file in the system?

5. Why does Joomla use templateDetails.xml files?

6. From which package are the classes (i.e JSite, JAdministrator and JInstallation) which make up the Joomla CMS application extended?

7. Which interface and method name should be used to retrieve HTTP request header information?

8. Assume the custom tag is GLOOP and the prefix is TWONG. Which of the following is the syntax for an empty custom tag?

9. How would you use a bean in a JSP page?

10. Which of the following options is a valid declaration?

11. Assuming the tag library is in place and the tag handler is correct, which of the following is the correct way to use a custom tag in a JSP page?

12. What is the WebApp deployment descriptor element name for the Servlet Context Initialization Parameters?

13. Consider the following statement: PreparedStatement ps=con.prepareStatement("INSERT INTO ORDER (CUSTOMER_ID ,PRICE) VALUES(?,?)"); Which of the following should come after this statement?

14. After executing the following code, resultvar contains false. What should the next step be? boolean resultvar=stmt.execute(sql);

15. Which of the following is not a JSP implicit object?

16. Which of the following statements are true regarding the structure of a WebArchive file?

17. Which of the following statements are true regarding the HTTP GET method?

18. Which of the following statements are best associated with the HTTPPOST method?

19. Which interface and method name should be used to acquire a text stream for the response?

20. With regard to the servletcontextlistener interface, which of the following methods is valid?

21. Which statement is true regarding ServletContext Initialization Parameters in the deployment descriptor?

22. With regard to the destroy lifecycle method, identify the correct statements about its purpose or about how and when it is invoked.

23. Read the following code snippet: 1 <libraryPrefix:handlerName parameterNAme="value"> 2 <%=23*counter %> 3 <b>Congratulations!</b> Which of the following is the correct way to complete the above code snippet?

24. Which design pattern did technical designers of JSP use to provide centralized dispatching of requests via a controller servlet?

25. Which method is called by the servlet container just after the servlet is removed from service?

26. Which of the following is the listener interface for servlet context attributes?

27. Which of the following is a JSP implicit object?

28. Which of the following is the name of the cookie used by Servlet Containers to maintain session information?

29. Which design pattern reduces network traffic by acting as a caching proxy of a remote object?

30. Which design pattern is used to decouple presentation from core data access functionality?

31. With regard to the service() lifecycle method, identify two correct statements about its purpose or about how and when it is invoked.

32. Which of the following are used by Servlet Containers to maintain session information?

33. Which JSP action retrieves the value of a property from a properly declared JavaBean in a JSP page?

34. If cookies are turned off on the client, which two methods still work with the session ID?

35. What output will be sent to the browser by the following code snippet? <!— Que <%="Reader"%> -->

36. What does the container do with the following code snippet?

37. Assuming the servlet method for handling HTTPGET requests is doGet(HttpServletRequest req, HTTPServletResponse res), how do you get a request parameter in that servlet?

38. Which method in the HttpServlet class corresponds to the HTTPPUT method?

39. Which interface provides access to request scoped attributes?

40. What is Template Data?

41. Which of the following options is a valid expression?

43. What is the file name of the WebApp deployment descriptor?

44. Which statement is true regarding a servlet context listener?

45. Which among the following objects is the best choice to share information between pages for a single user?

46. Read the following code snippet and answer the question based upon it: <taglib> <taglib-uri> http://www.yourcompany.com/you TagLibrary </taglib-uri> <taglib-location> /WEB-INF/yourTagLibrary.tld </taglib-location> </taglib> From the statements given below, which one applies to the code snippet?

47. Which method in the HttpServlet class corresponds to the HTTPPOST method?

48. Which of following interfaces can make a servlet thread safe?

49. In which directory do you place servlet class files?

50. Which of following interfaces can make a servlet thread safe?

51. When using HTML forms which of the following is true for POST method?

53. When comparing servlet initialisation parameters to context intialisation parameters, which is true among the following?

54. What is true about the life cycle of a servlet?

55.

56. How can you make the JSP class implement the SingleThreadModel interface?

57. javax.servlet.jsp.JspPage extends which of the following interfaces?

58. Which of the following is an INVALID attribute for tag directive?

59. What is the limit of data to be passed from HTML when doGet() method is used?

60. Where in JSP page source can EL functions be used?

61. Which of the following object scope is defined as follows : Objects with this scope are accessible from pages processing requests in the same application as the one in which they were created?

62. Which of the following is not a valid java bean (POJO) scope in JSP?

63. Why do you get this error? NoClassDefFoundError: org.apache.commons.lang.StringUtils. 1. The given class could not be found. 2. The given class could be found, but something went wrong when initializing it 3. None of them

64. Which of the following is valid about 'page' JSP directive?

66. JSP implicit object 'application' is an object of which of the following class?

67. The http GET, PUT, and DELETE verbs are idempotent. What does the term "idempotent" stand for?

68. Given a servlet containing the following code, what is the outcome of attempting to compile and run the servlet? ServletContext context = getServletContext(); String s = context.getAttribute(

69. JSP implicit object 'exception' is an object of which of the following classes?

70. Which of the following method is called before the page service any requests?

71. What results from a call to the getInitParameterNames() method on ServletContext when there are no context parameters set up in the deployment descriptor?

72. JSP implicit object 'out' is an object of which of the following classes?

73. Which of the following HTTP method sends the same response as request?

74. Considering the following Servlet code, choose the statement which is true: package com.nullhaus; import javax.servlet.annotation.*; import javax.servlet.http.*; @WebServlet("nullHausServlet") public class NullServlet extends HttpServlet { }

75. By default, the servlet API uses a ______ to store a session ID.

77. Which methods are needed to get the complete and exact URL that causes the call to arrive at the servlet? 1. getRequestURL() 2. getQueryString() 3. Both of them 4. None of them

78. Which of the following is an INVALID implicit EL objects?

79. Which one is not a part of the JSTL library group?

80. Which of the following methods can be used to get initialization and startup parameters of a servlet?

81. Which of the following classes has an implementation of getSession method that returns an HttpSession object?

82. Which of the following is not a 'page' directive attribute?

83. Which types can be used in conjunction with HttpServletResponse methods to stream output data?

1.
Which statement among the following apply to redirecting a HTTP request to another URL?

2.
How do you create the Parameter buttons the toolbar for component com_hello?

3.
Which of the following methods must you use to deny access from an external direct call?

4.
What is the role of the template metadata file in the system?

5.
Why does Joomla use templateDetails.xml files?

6.
From which package are the classes (i.e JSite, JAdministrator and JInstallation) which make up the Joomla CMS application extended?

7.
Which interface and method name should be used to retrieve HTTP request header information?

8.

Assume the custom tag is GLOOP and the prefix is TWONG. Which of the following is the syntax for an empty custom tag?

9.

How would you use a bean in a JSP page?

10.

Which of the following options is a valid declaration?

11.

Assuming the tag library is in place and the tag handler is correct, which of the following is the correct way to use a custom tag in a JSP page?

12.

What is the WebApp deployment descriptor element name for the Servlet Context Initialization Parameters?

13.
Consider the following statement:

PreparedStatement ps=con.prepareStatement("INSERT INTO ORDER (CUSTOMER_ID ,PRICE) VALUES(?,?)");

Which of the following should come after this statement?

14.
After executing the following code, resultvar contains false. What should the next step be?

boolean resultvar=stmt.execute(sql);

15.
Which of the following is not a JSP implicit object?

16.
Which of the following statements are true regarding the structure of a WebArchive file?

17.
Which of the following statements are true regarding the HTTP GET method?

18.
Which of the following statements are best associated with the HTTPPOST method?

19.
Which interface and method name should be used to acquire a text stream for the response?

20.
With regard to the servletcontextlistener interface, which of the following methods is valid?

21.
Which statement is true regarding ServletContext Initialization Parameters in the deployment descriptor?

22.
With regard to the destroy lifecycle method, identify the correct statements about its purpose or about how and when it is invoked.

23.
Read the following code snippet:

1 <libraryPrefix:handlerName parameterNAme="value">

2 <%=23*counter %>

3 <b>Congratulations!</b>

Which of the following is the correct way to complete the above code snippet?

24.
Which design pattern did technical designers of JSP use to provide centralized dispatching of requests via a controller servlet?

25.
Which method is called by the servlet container just after the servlet is removed from service?

26.
Which of the following is the listener interface for servlet context attributes?

27.
Which of the following is a JSP implicit object?

28.
Which of the following is the name of the cookie used by Servlet Containers to maintain

session information?

29.
Which design pattern reduces network traffic by acting as a caching proxy of a remote object?

30.
Which design pattern is used to decouple presentation from core data access functionality?

31.
With regard to the service() lifecycle method, identify two correct statements about its purpose or about how and when it is invoked.

32.
Which of the following are used by Servlet Containers to maintain session information?

33.
Which JSP action retrieves the value of a property from a properly declared JavaBean in a JSP page?

34.
If cookies are turned off on the client, which two methods still work with the session ID?

35.
What output will be sent to the browser by the following code snippet?

<!—
Que <%="Reader"%>
-->

36.
What does the container do with the following code snippet?

37.
Assuming the servlet method for handling HTTPGET requests is doGet(HttpServletRequest req, HTTPServletResponse res), how do you get a request parameter in that servlet?

38.
Which method in the HttpServlet class corresponds to the HTTPPUT method?

39.
Which interface provides access to request scoped attributes?

40.
What is Template Data?

41.
Which of the following options is a valid expression?

43.
What is the file name of the WebApp deployment descriptor?

44.
Which statement is true regarding a servlet context listener?

45.
Which among the following objects is the best choice to share information between pages for a single user?

47.
Which method in the HttpServlet class corresponds to the HTTPPOST method?

48.
Which of following interfaces can make a servlet thread safe?

49.
In which directory do you place servlet class files?

74. Considering the following Servlet code, choose the statement which is true: package com.nullhaus; import javax.servlet.annotation.; import javax.servlet.http.; @WebServlet("nullHausServlet") public class NullServlet extends HttpServlet { }