SUN 310-083

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SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:

1. Which two statements about tag files are true? (Choose two.)

A) A file named foo.tag, located in /WEB-INF/tags/bar, is recognized as a tag file by the container.
B) Classic tag handlers and tag files CANNOT reside in the same tag library.
C) A file named foo.tag, located in a web application's root directory, is recognized as a tag file by the container.
D) A file named foo.tag, bundled in a JAR file but NOT defined in a TLD, triggers a container translation error.
E) If files foo1.tag and foo2.tag both reside in /WEB-INF/tags/bar, the container will consider them part of the same tag library.

2. You have created a web application that you license to real estate brokers. The webapp is highly customizable including the email address of the broker, which is placed on the footer of each page. This is configured as a context parameter in the deployment descriptor:
1 0. <context-param>
1 1. <param-name>footerEmail</param-name>
1 2. <param-value>[email protected]</param-value>
1 3. </context-param>
Which EL code snippet will insert this context parameter into the footer?

A) <a href='mailto:${initParam.footerEmail}'>Contact me</a>
B) <a href='mailto:${contextParam.footerEmail}'>Contact me</a>
C) <a href='mailto:${footerEmail}'>Contact me</a>
D) <a href='mailto:${contextParam@footerEmail}'>Contact me</a>
E) <a href='mailto:${initParam@footerEmail}'>Contact me</a>

3. Which three are described in the standard web application deployment descriptor?
(Choose three.)

A) context root for the application
B) web container default port bindings
C) ServletContext initialization parameters
D) servlet instance pool configuration
E) session configuration
F) MIME type mappings

4. Your web application uses a simple architecture in which servlets handle requests and then forward to a JSP using a request dispatcher. You need to pass information calculated by the servlet to the JSP; furthermore, that JSP uses a custom tag and must also process this information. This information must NOT be accessible to any other servlet, JSP or session in the webapp. How can you accomplish this goal?

A) Store the data in a public instance variable in the servlet.
B) Add an attribute to the request object before using the request dispatcher.
C) This CANNOT be done as the tag handler has no means to extract this data.
D) Add an attribute to the context object before using the request dispatcher.

5. You are building a dating web site. The client's date of birth is collected along with lots of other information. You have created an EL function with the signature:
calcAge(java.util.Date):int and it is assigned to the name, age, in the namespace, funct. In one of your JSPs you need to print a special message to clients who are younger than 25.
Which EL code snippet will return true for this condition?

A) ${funct:age(client.birthDate) < 25}
B) ${funct:age[client.birthDate] < 25}
C) ${calcAge[client.birthDate] < 25}
D) ${funct:calcAge[client.birthDate] < 25}
E) ${funct:calcAge(client.birthDate) < 25}
F) ${calcAge(client.birthDate) < 25}

Solutions: