试题详情
- 单项选择题Which statement is true about IP telephony calls？（）
A、 A Voice over IP （VoIP） packet consists of the voice payload， IP header， TCP header， RTP header， and Layer 2 link header.
B、 The voice carrier stream uses H323 to set up， maintain， and tear down call endpoints.
C、 Call control signaling uses Real-Time Transport Protocol （RTP） packets that contain actual voice samples.
D、 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.
- D
关注下方微信公众号，在线模考后查看
热门试题
- Refertotheexhibit.Wh
- What is the maximum
- Why is QoS important
- 能够断开路径并将对象转换为曲线的工具是（
- Refer to t
- What are
- Which three of these
- You are the Cisco Ne
- 在三个安装步骤中，正确顺序是（）&en
- Which two̳
- Refer to t
- 以下哪些是vlan trun
- Which three
- Which two subnetwork
- 下面的特殊效果和轮廓有关的是（）
- 网络管理员不能建立一个telnet会话与
- 下面对路由器的描述正确的是（交换机指二层
- IGP的作用范围是（）
- The VLANs̳
- Which of