單項(xiàng)選擇題

If an operating system permits shared resources such as memory to be used sequentially by multiple users/application or subjects without a refresh of the objects/memory area, what security problem is most likely to exist? 如果操作系統(tǒng)允許共享資源，內(nèi)存順序使用無(wú)刷新的對(duì)象/存儲(chǔ)區(qū)由多個(gè)用戶/應(yīng)用程序或主題，什么是最可能存在的安全問(wèn)題？（）

A.disclosure of residual data. 殘余數(shù)據(jù)的披露
B.unauthorized obtaining of a privileged execution state. 取得未經(jīng)授權(quán)的特權(quán)執(zhí)行。
C.data leakage through covert channels. 通過(guò)秘密渠道的數(shù)據(jù)泄漏
D.denial of service through a deadly embrace. 拒絕服務(wù)攻擊通過(guò)一個(gè)致命的死鎖

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