无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

<ruby id="0smmx"><xmp id="0smmx"></xmp></ruby>

多項(xiàng)選擇題

Which two Internet Protocol (IP) telephony devices are best categorized as infrastructure components? （）

A.IP telephones
B.Voice gateways
C.Call management software
D.Media Convergence Servers (MCSs)

你可能感興趣的試題

單項(xiàng)選擇題

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

單項(xiàng)選擇題

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