Network system data backup is an important part of information system data security.
网络系统数据备份是保证信息系统数据安全的重要组成部分。
The security of operation system is the foundation of whole information system.
操作系统的安全是整个信息系统安全的基础。
The security of operation system is the foundation of whole information system.
操作系统的安全是整个信息系统安全的基础。
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