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單項(xiàng)選擇題

Which of the following wiring distribution components should be chosen to provide level integrateddiagnostic capabilities?（）

A. Vampire tap
B. Smart jack
C.Demarcation point
D. Programmable logic controller

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單項(xiàng)選擇題

A demarcation point is usually installed and managed by which of the following providers?（）

A. Web host provider
B. VoIP company
C. Telephone company
D. Hardware manufacturer

單項(xiàng)選擇題

Prioritizing traffic between data and voice is defined as which of the following?（）

A. Caching engines
B. Proxy server
C. QoS
D. Load balancing

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