题目内容
The so-called “layered security” is the idea of having multiple ways of preventing an intrusion.
查看答案
搜索结果不匹配？点我反馈
更多问题
A hacker is an intruder.
Hackers are those who are threats to computer and network security.
If an intruder gets physical access, your data can also be lost.
Be careful almost every network equipment may be used as an access point to your network and your data can be faced with threats.
微信支付 
支付宝支付