Packet Tracer的功能是什么?What is a feature of Packet Tracer?
A. 它可用于检查连接到互联网的企业网络的网络数据流量It can be used to examine network data flows for a corporate network that connects to the internet.
B. 它可用于使用真实的公司数据从源头跟踪数据包到目的地It can be used to trace a packet from source to destination using real corporate data.
C. 它允许构建和建模网络配置It allows building and modeling network configurations.
D. 它允许对真正的物理网络设备进行功能替换。It allows a functional replacement for real physical network equipment.