DCD：Data Carder Detect，载波侦测指示，有时简称CD(Cartier Detect)。当调制解调器收到对方调制解调器送来的信号(载波Carrier)时，此灯会亮，代表已能和对方调制解调器传送【 】。
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更多“DCD：Data Carder Detect，载波侦测指示，…”相关的问题
第1题
How much risk you are willing to accept for a given potential return is a ______(determine) you will have to make for yourself.
第3题
In(66)the strength of the carder signal is varied to represent binary 1 or 0.(67)is a system that can map a name to an address and conversely an address to an name.(68)is a three-way handshaking authentication protocol that it's packets are encapsulated in the point-to-point protocol.(69)is an approach that enables an ATM Switch to behave like a LAN switch.(70)is an guided media which is made of glass or plastic and transmits signals in the form. of light.
A．ASK
B．PSK
C．FSK
D．FDM
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