Lý thuyết WPSJ mới toanh

1             

Which one of the following methods of ServletConfig interface retrieves the value of the initialization parameter?

getServletName()

getInitParameter()

getServerInfo()

getServletContext()

2             

Which one of the following methods of HttpServletRequest interface indicates whether the authenticated user is included in the logical "role"?

getSession()

isUserInRole()

getUserPrincipal()

isRequestedSessionIdValid()

3             

The implicit object ?out? is equivalent to an instance of ________ class.

OutputStream

PrintStream

PrintWriter

JspWriter

4             

Which of the following implicit object is not available to use in EL expressions?

param

cookie

header

pageContext

contextScope

5             

What will be the output of following expression if used in a JSP page?

${7 % 2}

1

72

7 % 2

{7 % 2}

3

6             

Which one of the following JSTL tags is used to iterate through a collection of objects?

A.

B.

C.

D.

E.

F.

A

B

C

D

E

F

7             

Which method starts the process of the evaluation of the body inside the tag for the first time?

public void doTag()

public void doInitBody()

public void doStartTag()

public void init()

8             

Which one of the following values does the SimpleTag's doTag() method return?

EVAL_BODY_INCLUDE

SKIP_BODY

void

EVAL_PAGE

SKIP_PAGE

9             

Which one of the following statements includes a file named 'index.html' in a JSP page?

A.

B.

C.

D.

E.

A

B

C

D

E

10           

Which one of the following statements declares the current JSP page to be an error page ?

A.

B.

C.

D.

A

B

C

D

11           

Which one of the following interfaces notifies an object when it is being bound to or unbound from a session?

HttpSessionListener

HttpSessionValueListener

HttpSessionBindingListener

HttpSessionAttributeListener

12           

Which one of the following attributes of a page directive specifies an HTTP response of the type "image/svg"?

type

mimeType

language

contentType

pageEncoding

13           

Which one of the following authentication techniques requires a browser to use a default TCP port and an extra authentication layer in between HTTP and TCP?

HTTP Basic Authentication

Form Based Authentication

HTTP Digest Authentication

HTTPS Client Authentication

14           

Which tag library contains the tags for looping, expression evaluation and basic input and output?

SQL Tag Library

Core Tag Library

XML Tag Library

Formatting/Internationalization (I18N) Tag Library

15           

The _________ method is used to invoke the next filter in the filter chain.

doFilter(ServletRequest, ServletResponse)

do(HttpServletRequest, HttpServletResponse)

doFilter()

doFilter(FilterChain)

16           

The ________ element, a mandatory element in a filter definition, defines the class name of the filter.

A.

B.

C.

D.

A

B

C

D

17           

Read the following and state the correct answer.

The element is converted to _____________ or __________ tag after a JSP page is translated and compiled

A. ,

B. ,

C. ,

D. ,

A

B

C

D

18           

Which one of the following methods returns an array of String objects containing all of the parameter values or null if parameters do not exist?

getParameterValues()

getParameterNames()

getParameter()

19           

Which of the following HTTP methods can be used to send large amount of binary data from the browser to a servlet?

doGet()

doPost()

doHead()

doPut()

20           

In a Web application, the Tag Library Descriptors ( TLDs) are stored _________.

only in /WEB-INF/lib directory.

only in /WEB-INF/classes directory.

in the META-INF directory of a JAR file inside the /WEB-INF/lib directory.

at the application's top-level directory.

in /WEB-INF directory or its sub-directory.