Mark works as a Programmer for InfoTech Inc. He develops the following deployment descriptor code.

<web-app . . . .>

<display-name>A Secure Application</display-name><servlet>

...

<security-role-ref >

<role-name>Manager</role-name>

<role-link>Admin</role-link>

</security-role-ref>

</servlet>

<security-role>

<role-name>Programmer</role-name>

</security-role>

<security-role>

<role-name>Admin</role-name>

</security-role>

<security-role>

<role-name>Employee</role-name>

</security-role>

</web-app>

Which of the following is a valid isUserInRole() method call that can be made if request is theHttpServletRequest request?

Which of the following methods of the EJBContext interface can be called by both the BMT and CMT beans?

Each correct answer represents a complete solution. Choose all that apply.

Mark works as a Programmer for InfoTech Inc. He develops a deployment descriptor code that contains three valid

<security-constraint> elements.All of them constraining a Web resource Res1, the

<auth-constraint> sub-element of the <security-constraint> elements are as follows.

<auth-constraint> Admin</auth-constraint>

<auth-constraint> Manager</auth-constraint>

<auth-constraint/>

Which of the following can access the resource Res1?

Which of the following statements correctly describe the features of the singleton pattern?

Each correct answer represents a complete solution. Choose all that apply.

Which of the following deployment descriptor elements must contain the <transport-guarantee> element as its mandatory sub-element?