单项选择题
What ensures that voice packets are given priority throughout the network so that conversations arrive intact?（）
A.QoS
B.Centrex
C.Packet encryption
D.Intelligent call routing
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相关考题
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Why is QoS important in a converged network?（）
A.Because data does not need to arrive intact, so data transfer rates can be variable
B.Because lost voice-data packets must be retransmitted
C.Because voice data packets should arrive quickly and sequentially, and with no lost data
D.Because voice data packets must follow a single dedicated path through the network -
单项选择题
You are the network consultant from passguide.com. Could you please tell customers what strategy will protect network resources and services from unauthorized actions?（）
A.Network management
B.Network optimization
C.Network security
D.Content storage networking -
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Which network technology addresses these customer business needs: shrinking budgets and IT staffs, more complex networks, and an increased need for network security?（）
A.Optical network
B.Network management
C.Storage-area network (SAN)
D.Content delivery network (CDN)
