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大姑娘说了，老歪着不好。Activity monitor is a device that can detect and interfere with traffic to the server. Like firewalls, it is not a necessary device in network routing. A typical monitor, like the ACK disguised firewall/proxy in 7, has an additional capability, that is, if it finds that the SYN packet originates from an attacker source address it knows, it will immediately send the disguised RST packet to the server. Activity monitors are practical because they are cheap and easy to deploy (compared with schemes based on firewalls and input source filtering), and can still protect the entire server network without requiring each server operating system to implement a terminal-based solution.Differences between simple factories and factory methods: Simple factories and factory method patterns look very similar, especially specific factories in simple factories and factory methods. Simple factory, all things have been done in one place. However, the factory method creates a framework for subclasses to decide how to implement it. For example, in the factory method, the OrderPizza method creates a general framework to create pizza. The OrderPizza method relies on the factory method to create specific classes and make actual pizza. It is possible to decide what the actual products manufactured are by inheriting the factory. Simple factories do not have this flexibility.那可能性分别有多少呢？尹旭自信询问。虽未能生擒张琏，俞大猷也终于完成了这次任务，在大明的版图上，再也没有飞龙国了。This pseudocode can well understand the event delivery mechanism:为什么排练要接近沙托呢。沙托隐藏的过去是。