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

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單項(xiàng)選擇題

Cisco Technical Support Services portfolio provide customers resources that help ensure that Cisco products operate efficiently, remain highly available, and benefit from up-to-date system software. Is it correct?（）

A.Yes
B.No

單項(xiàng)選擇題

Which cisco product portfolio allows users to access their email, voice, and fax messages from A single inbox anytime, anywhere?（）

A.Cisco WebEx Connect
B.Cisco Unity
C.CiscoUnified Personal Communicator
D.CiscoIntegrated Messaging