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單項選擇題

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

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單項選擇題

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

多項選擇題

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