信管网综合知识

() is called the gateway of network securit

() is called the gateway of network security, which is used to identify what kind of data packets can enter the enterprise intranet. 【转自信管网(cnitpm.com)】
A. Anti-virus software
B. Trojan horse
C. Secret key
D. Firewall

信管网参考答案：D

信管网解析：点击查看解析

点击查看：２０２０年下半年系统集成项目管理工程师真题汇总专题（综合、案例、论文）