单项选择题 If XYZ LTD needs to sign a contract that includes infrastructure design, deployment,support services and applications, what would be the best option?（）

单项选择题 If XYZ LTD needs to sign a contract that includes infrastructure design, deployment, support services and applications, what would be the best option?（）

多项选择题 What are four uses of the USB ports in the Cisco integrated services routers?（）