单项选择题
A.802.11a B.802.11b C.802.11g D.802.11n
A new company has been given one public IP address. The...
A new company has been given one public IP address. The company employs 200 users requiring Internet access from the headquarters. Which of the following can be implemented to provide Internet access for all the employees?（）
A. Multicasting B. Proxy server C. NAT D. Subnetting
An administrator is unable to ping a workstation. Which...
单项选择题An administrator is unable to ping a workstation. Which of the following tools would BEST help toresolve the issue?（）
A. Cable tester B. Multimeter C. Toner probe D. Protocol analyzer
Which of the following features would BEST be used to o...
多项选择题Which of the following features would BEST be used to optimize real-time voice and video chat?（）(Select TWO)
A. Load balancing B. Caching engines C. Qos D. Fault tolerance systems E. Traffic shaping
