network中的speed simulation模拟的是什么带宽？
什么是色散?色散常数与模拟信号的传输中容许的频带宽度有什么关系?
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在模拟信道中,带宽是指一个物理信道传输信号的能力,即可传输信号的(),单位为();而在数字信道中,带宽是(),单位为:()。
In low - speed network ,it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high - speed networks, this approach often works poorly, because in the(71)between sending the notification and notification arriving at the source, thousands of additional(72)may arrive. In ATM network , a major tool for preventing(73)is(74)control. When a host wants a new virtual(75),it must describe the traffic to be offered and the service expected.A．intervalB．timeC．slotD．delay
A network technician is installing a new managed 10/100 Mbps switch on the network. The network has an older printer with a 10Mbps network adapter that will be moved to the new switch.Which of the following settings on the switch will need to be configured to support the printer?（）A. MAC filteringB. IP addressC. PoED. Port speed
传输效率和可靠性是通信系统中最重要的性能指标。以下关“模拟通信”和“数字通信”中“效率”的说法中正确的是(24)。A．模拟通信和数字通信的效率都用带宽来表示B．模拟通信的效率用带宽来表示，而数字通信的效率则用传信速率来表示C．数字通信的效率用带宽来表示，而模拟通信的效率则用传信速率来表示D．数字通信和模拟通信的效率都用传信速率来表示。
TCONT带宽类型中，固定带宽和保证带宽的区别是什么？
对于同一个调制信号，模拟调制各种调幅方式中带宽最窄的是SSB。
