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Question 71 / 121:  Which methods can be used to restrict method invocations in your web application to specific roles?
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Explanation:

isCallerInRole() and getCallerPrincipal() methods are defined in the EJBs context object to set method permissions in EJBs.

getUserPrincipal() and isUserInRole() are defined in HttpServletRequest to set method permissions in web components.

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