社会态度
Which statement is true about IP telephony calls?() A Voice over IP (VoIP) packet consists of the voice payload, IP header, TCP header, RTP header, and Layer 2 link header.。 The voice carrier stream uses H323 to set up, maintain, and tear down call endpoints.。 Call control signaling uses Real-Time Transport Protocol (RTP) packets that contain actual voice samples.。 The sum of bandwidth necessary for each major application, including voice, video, and data, should not exceed 75 percent of the total available bandwidth for each link.。
企业组织外部虚拟化的具体形式有() 外包。 战略联盟。 特许经营。 合资企业。 虚拟销售网络。
Which two benefits are provided by creating VLANs?() added security。 dedicated bandwidth。 provides segmentation。 allows switches to route traffic between subinterfaces。 contains collisio。
突变
包裹票价率是以()类包裹运价率为基数