單項(xiàng)選擇題

Which Internet Protocol(IP) telephony element is best categorizedas a voice application component?（）

A.Voice gateway
B.Private branch exchange (PBX)
C.Advanced audio conferencing software
D.IP telephone

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單項(xiàng)選擇題

Which IP telephony component provides call processing, such as signaling, that in a traditional voice network is provided by switching equipment, such as a PBX?（）

A.Advanced call-handling software, such as Cisco Unity
B.Call-management hardware and software, such as CiscoCallManager
C.Client-based software, such as CiscoSoftPhone
D.Voice gateways, such as the Cisco VG248 Analog Phone Gateway

單項(xiàng)選擇題

Which network technology allows for the monitoring of active communication networks to diagnose problems and gather statistics for network administration?（）

A.Content networking
B.Campus local-area networking
C.Network management
D.Network security

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