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SUN 310-083 Exam Syllabus Topics:

SectionWeightObjectives
JSP Technology Model13%- Implicit objects
- JSP lifecycle and translation
- JSP elements and syntax
JSP Standard Actions and Custom Tags13%- Tag Library Descriptor
- Standard actions
- Simple and Classic tag handlers
Servlet Technology Model15%- Servlet lifecycle
- Servlet interface and methods
- Request and response handling
Web Container Model14%- Servlet context attributes
- Container architecture and responsibilities
- Request dispatching
Web Application Security11%- Transport security
- Declarative and programmatic security
- Authentication and authorization
JSP Expression Language10%- EL syntax and operators
- Functions and reserved words
- Implicit variables and scope resolution
Web Application Structure and Deployment12%- Context parameters and initialization
- Deployment descriptor (web.xml)
- WAR file structure
Session Management12%- URL rewriting, cookies, SSL
- Session attributes and listeners
- Session lifecycle and tracking

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

Which three are true about TLD files? (Choose three.)

  • A. When deployed inside a JAR file, TLD files must be in the META-INF directory, or a subdirectory of it.
  • B. The web container can generate an implicit TLD file for a tag library comprised of both simple tag handlers and tag files.
  • C. A tag handler's attribute must be included in the TLD file only if the attribute can accept request-time expressions.
  • D. The web container can automatically extend the tag library map described in a web.xml file by including entries extracted from the web application's TLD files.
  • E. The web container recognizes TLD files placed in any subdirectory of WEB-INF.
Reveal Solution  Discussion  0

Correct Answer: A,D,E  🗳️

You are building a web application that will be used throughout the European Union; therefore, it has significant internationalization requirements. You have been tasked to create a custom tag that generates a message using the java.text.MessageFormat class.
The tag will take the resourceKey attribute and a variable number of argument attributes with the format, arg<N>. Here is an example use of this tag and its output:
< t:message resourceKey='diskFileMsg' arg0='MyDisk' arg1='1247' />
generates:
The disk "MyDisk" contains 1247 file(s).
Which Simple tag class definition accomplishes this goal of handling a variable number of tag attributes?

  • A. The Simple tag model does NOT support a variable number of attributes.
  • B. public class MessageTag extends SimpleTagSupport
    implements VariableAttributes {
    private Map attributes = new HashMap();
    public void putAttribute(String name, Object value) {
    this.attributes.put(name, value);
    }
    // more tag handler methods
    }
  • C. public class MessageTag extends SimpleTagSupport
    implements VariableAttributes {
    private Map attributes = new HashMap();
    public void setVariableAttribute(String uri,
    String name, Object value) {
    this.attributes.put(name, value);
    }
    // more tag handler methods
    }
  • D. public class MessageTag extends SimpleTagSupport
    implements DynamicAttributes {
    private Map attributes = new HashMap();
    public void setDynamicAttribute(String uri, String name,
    Object value) {
    this.attributes.put(name, value);
    }
    // more tag handler methods
    }
  • E. public class MessageTag extends SimpleTagSupport
    implements DynamicAttributes {
    private Map attributes = new HashMap();
    public void putAttribute(String name, Object value) {
    this.attributes.put(name, value);
    }
    // more tag handler methods
    }
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Within the web application deployment descriptor, which defines a valid JNDI environment entry?

  • A. <env-entry>
    < env-entry-name>param/MyExampleString</env-entry-name>
    < env-entry-type>int</env-entry-type>
    < env-entry-value>10</env-entry-value>
    < /env-entry>
  • B. <env-entry>
    < env-entry-type>java.lang.Boolean</env-entry-type>
    < env-entry-value>true</env-entry-value>
    < /env-entry>
  • C. <env-entry>
    < env-entry-name>param/MyExampleString</env-entry-name>
    < env-entry-type>java.lang.String</env-entry-type>
    < env-entry-value>This is an Example</env-entry-value>
    < /env-entry>
  • D. <env-entry>
    < env-entry-name>param/MyExampleString</env-entry-name>
    < env-entry-value>This is an Example</env-entry-value>
    < /env-entry>
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

You have created a servlet that generates weather maps. The data for these maps is calculated by a remote host. The IP address of this host is usually stable, but occasionally does have to change as the corporate network grows and changes. This IP address used to be hard coded, but after the fifth change to the IP address in two years, you have decided that this value should be declared in the deployment descriptor so you do NOT have the recompile the web application every time the IP address changes. Which deployment descriptor snippet accomplishes this goal?

  • A. <serlvet-param>
    < name>WeatherServlet.hostIP</name>
    < value>127.0.4.20</value>
    < /servlet-param>
  • B. <init-param>
    < param-name>WeatherServlet.hostIP</param-name>
    < param-value>127.0.4.20</param-value>
    < /init-param>
  • C. <servlet>
    < !-- servlet definition here -->
    < param-name>WeatherServlet.hostIP</param-name>
    < param-value>127.0.4.20</param-value>
    < /servlet>
  • D. <init-param>
    < name>WeatherServlet.hostIP</name>
    < value>127.0.4.20</value>
    < /init-param>
  • E. <serlvet-param>
    < param-name>WeatherServlet.hostIP</param-name>
    < param-value>127.0.4.20</param-value>
    < /servlet-param>
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Which basic authentication type is optional for a J2EE 1.4 compliant web container?

  • A. HTTP Digest Authentication
  • B. HTTPS Client Authentication
  • C. HTTP Basic Authentication
  • D. Form Based Authentication
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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