单项选择题
A.Layer one B.Layer two C.Layer three D.Layer four
Which device is used in wireless networks to send trans...
单项选择题Which device is used in wireless networks to send transmissions to a target area?（）
A.Optical fiber B.Access point C.Directional antenna D.Omni-directional antenna
A service provider wants to prevent the repeat of a den...
单项选择题A service provider wants to prevent the repeat of a denial of service (DoS) attack that recently disabled Internet access for several thousand customers. Which Cisco solution best matches this business need?（）
A.Network security B.Wireless network C.Content networking D.Virtual Private Network (VPN)
You are the network consultant from passguide.com. In w...
多项选择题You are the network consultant from passguide.com. In which situation you will advice your customer to implement data centers?（）
A.Protecting the business from information outages B.Optimizing the efficiency with which IT operates C.An increased need for specialized IT silos D.IT systems grow fast
