OSI定义的网络管理包括配置管理、故障管理、性能管理、计费管理和安全管理五大功能，下列操作中属于性能管理的是（）。
性能管理考虑的是网络的利用情况。包括：采集、分析网络对象的性能参数，监测网络对象的性能，对网络线路质量进行分析。同时，统计网络运行状态信息，对网络的使用发展做出评测、估计，为网络进一步规划与调整提供依据。
性能管理必须考虑每个网络对象的利用率和性能，以及综合在一起的整个网络利用率和性能。对各种性能管理公式进行计算和分析以后得出的互联网确切性能必须接近期望的水平。
Data security is the practice of protecting digital information from （ ）access，corruption,or theft throughout its entire lifecycle. It is a concept that encompasses every aspect of information security from the （ ）security of hardware and storage devices to administrative and access controls,as well as the logical security of software applications. It also includes organizational （ ）and procedures.Data security involves deploying tools and technologies that enhance the organization's visibility into where its critical data resides and how it is used. These tools and technologies should （ ）the growing challenges inherent in securing today's complex distributed,hybrid,and/or multicloud computing environments.Ideally,these tools should be able to apply protections like （作答此空）,data masking,and redaction of sensitive files, and should automate reporting to streamline audits and adhering to regulatory requirements.
Data security is the practice of protecting digital information from （ ）access，corruption,or theft throughout its entire lifecycle. It is a concept that encompasses every aspect of information security from the （ ）security of hardware and storage devices to administrative and access controls,as well as the logical security of software applications. It also includes organizational （ ）and procedures.Data security involves deploying tools and technologies that enhance the organization's visibility into where its critical data resides and how it is used. These tools and technologies should （作答此空）the growing challenges inherent in securing today's complex distributed,hybrid,and/or multicloud computing environments.Ideally,these tools should be able to apply protections like （ ）,data masking,and redaction of sensitive files, and should automate reporting to streamline audits and adhering to regulatory requirements.
Data security is the practice of protecting digital information from （ ）access，corruption,or theft throughout its entire lifecycle. It is a concept that encompasses every aspect of information security from the （ ）security of hardware and storage devices to administrative and access controls,as well as the logical security of software applications. It also includes organizational （作答此空）and procedures.Data security involves deploying tools and technologies that enhance the organization's visibility into where its critical data resides and how it is used. These tools and technologies should （ ）the growing challenges inherent in securing today's complex distributed,hybrid,and/or multicloud computing environments.Ideally,these tools should be able to apply protections like （ ）,data masking,and redaction of sensitive files, and should automate reporting to streamline audits and adhering to regulatory requirements.
Data security is the practice of protecting digital information from （ ）access，corruption,or theft throughout its entire lifecycle. It is a concept that encompasses every aspect of information security from the （作答此空）security of hardware and storage devices to administrative and access controls,as well as the logical security of software applications. It also includes organizational （ ）and procedures.Data security involves deploying tools and technologies that enhance the organization's visibility into where its critical data resides and how it is used. These tools and technologies should （ ）the growing challenges inherent in securing today's complex distributed,hybrid,and/or multicloud computing environments.Ideally,these tools should be able to apply protections like （ ）,data masking,and redaction of sensitive files, and should automate reporting to streamline audits and adhering to regulatory requirements.
Data security is the practice of protecting digital information from （作答此空）access，corruption,or theft throughout its entire lifecycle. It is a concept that encompasses every aspect of information security from the （ ）security of hardware and storage devices to administrative and access controls,as well as the logical security of software applications. It also includes organizational （ ）and procedures.Data security involves deploying tools and technologies that enhance the organization's visibility into where its critical data resides and how it is used. These tools and technologies should （ ）the growing challenges inherent in securing today's complex distributed,hybrid,and/or multicloud computing environments.Ideally,these tools should be able to apply protections like （ ）,data masking,and redaction of sensitive files, and should automate reporting to streamline audits and adhering to regulatory requirements.
以下关于项目风险管理的说法中，不正确的是（ ）。
某分公司财务 PC 通过专网与总部财务系统连接，拓扑如图8所示。某天，财务PC访问总部财务系统速度缓慢、时断时好，网络管理员在财务PC端ping总部财务系统，发现有网络丢包，在光电转换器1处ping总部财务系统网络丢包症状同上，在专网接入终端处ping 总部财务系统，网络延时正常无丢包，光纤1两端测得光衰为-28dBm,光电转换器1和2指示灯绿色闪烁。 初步判断该故障原因可能是（ ）,可采用（作答此空）措施较为合理。
某分公司财务 PC 通过专网与总部财务系统连接，拓扑如图8所示。某天，财务PC访问总部财务系统速度缓慢、时断时好，网络管理员在财务PC端ping总部财务系统，发现有网络丢包，在光电转换器1处ping总部财务系统网络丢包症状同上，在专网接入终端处ping 总部财务系统，网络延时正常无丢包，光纤1两端测得光衰为-28dBm,光电转换器1和2指示灯绿色闪烁。 初步判断该故障原因可能是（作答此空）,可采用（ ）措施较为合理。
某主机可以ping 通本机地址，而无法ping通网关地址，网络配置如图7所示，造成该故障的原因可能是（ ）。
下列命令片段用于配置（ ）功能。
