單項(xiàng)選擇題

Which of the following is given the responsibility of the maintenance and protection of the data?下列哪一角色對(duì)數(shù)據(jù)的維護(hù)和保護(hù)負(fù)有責(zé)任（）

A.Security administrator 安全管理員
B.Data custodian 數(shù)據(jù)管理者
C.Data owner 數(shù)據(jù)擁有者
D.User 用戶

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Which data classification SHOULD APPLY to commercial trade secrets?哪一個(gè)數(shù)據(jù)分類應(yīng)適應(yīng)于商業(yè)貿(mào)易機(jī)密？（）

A.Secret機(jī)密
B.Sensitive敏感
C.Private私有
D.Confidential秘密

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Which of the following are suitable protocols for securing VPN connections at the lower layers of the OSI model?在OSI的低層模型中，以下哪項(xiàng)協(xié)議適合用于VPN的安全連接（）

A. PKCS#10 and X.509
B. TLS and SSL
C. IPsec and L2TP
D. S/MIME and SSH