EJB Security Quiz

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EJB Security Quiz

EJB Security Quiz:

Which of the following statements are true regarding EJB 2.0 security?

A) Individual overloaded methods with the same method name can be assigned different permissions
B) Individual overloaded methods with the same method name CANNOT be assigned different permissions if the same method name exists across multiple interfaces. (i.e. Home, component interfaces)
C) An asterisk ("*") used in the <method-name> element is considered a wildcard that can be used to refer to all methods in the bean's interfaces.
D) If a method exists in both the Home and Component interfaces, both methods must always be assigned the same method permissions.

[Ans: A, C]
Individual overloaded methods with the same method name can be assigned different permissions. Even if the method is overloaded across multiple interfaces, each of the individual methods can be assigned different method permissions using the <method-intf> element. An asterisk ("*") used in the <method-name> element is considered a wildcard that can be used to refer to all methods in the bean's interfaces.

Examples:

<method>
<ejb-name> Catalog </ejb-name>
<method-intf>Remote </method-intf>
<method-name> listItems </method-name>
</method>

<method>
<ejb-name> Catalog </ejb-name>
<method-name> *</method-name>
</method>

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