試題詳解

試卷：無年度 - Java EE 6 Web Component Developer Certified Expert Exam：1z0-899(1-50)#84202 | 科目：OCE

試卷名稱：無年度 - Java EE 6 Web Component Developer Certified Expert Exam：1z0-899(1-50)#84202

科目：OCE

31 Which security mechanism uses the concept of a realm?
(A) authorization
(B) data integrity
(C) confidentiality
(D) authentication

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