單項選擇題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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1.單項選擇題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

2.單項選擇題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

4.多項選擇題Which three of these are benefits of telepresence and video collaboration?（）

A.do more with less
B.provide a unified tool for all business processes
C.influence competitive advantage and business agility through faster decision-making and new business processes and models
D.eliminate miscommunication
E.reduce the need to personalize communications with customers
F.transform your business and organization and be greener

5.單項選擇題Wide Area Network (WAN) is a computer network that covers a broad areA. Which statement is correct for wide-area network (WAN)?（）

A.Limited in a single building, a group of buildings, or even a single room
B.Crosses metropolitan, regional, or national boundaries
C.Encompasses an entire city or metropolitan area and connects multiple local-area networks (LANs)
D.Connects client devices wireless protocol