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DDDDirectDistanceDialing国内长途直拨DDNDigitalDataNetwork数字数据网是向用户提供数字数据电路的网络,采用数字信道传输数据信号,可以向用户提供点到点和点到多点的中、高速数据通信的专用电路。DDoSDistributedDenialofSer-vice分布式拒绝服务与拒绝服务(DoS)原理相同但更
DDDDirectDistanceDialing DDDigitalDataNetwork digital data network is to provide users with digital data network circuit, the use of digital channels to transmit data signals, can provide users with point to point and multipoint, high-speed data communications dedicated circuit. DDoSDistributedDenialofSer-vice Distributed Denial of Service and denial of service (DoS) the same principle but more