[单选]

You develop a serializable class for persisting objects as files.
Every time an object is serialized, you have to update the database with the name of the object and location of that file.
You elect to employ the OnSerialized attribute to achieve this objective.
You now need to apply the OnSerialized attribute to a certain method.
What should you do?（）

月度财务报告 You need to design a method of communication between the IT and HR departments. Your solution must meet business requirements. What should you do？（） Design a custom IPSec policy to implement Encapsulating Security Payload （ESP） for all IP traffic Design the IPSec policy to use certificate-based authentication between the two departments’ computers。 Design a customer IPSec policy to implement Authentication Header （AH） for all IP traffic. Desing the IPSec policy to use preshared key authentication between the two departments’ computers。 Design a customer IPSec policy to implement Encapsulating Payload （ESP） for all IP traffic. Desing the IPSec policy to use preshared key authentication between the two departments’ computers。 Design a customer IPSec policy to implement Authentication Header （AH） for all IP traffic. Desing the IPSec policy to use certificate-based authentication between the two departments’ computer。 某分部工程双代号网络计划如下图所示，其存在的绘图错误有（）。 多个终点节点。 多个起点节点。 节点编号有误。 存在循环回路。 有多余虚工作。 带煤气作业如带煤气抽堵盲板、带煤气接管、高炉换探料尺、操作插板等危险工作，不应在（）进行。 夏天。 雷雨天。 冬天。 首过效应

You develop a serializable class for persisting objects as files.
Every time an object is serialized, you have to update the database with the name of the object and location of that file.
You elect to employ the OnSerialized attribute to achieve this objective.
You now need to apply the OnSerialized attribute to a certain method.
What should you do?（）