帮同学问的一道CCNA题

我要飞

7。Which of the following statements regarding ISDN are correct? (** all that<br>apply)<br>A. Each ISDN B channel has transmission speeds of up to 64 kbps.<br>B. The ISDN B channel can carry video, voice or data.<br>C. The ISDN B channel transmission rate varies depending on the service used.<br>D. The ISDN D channel transmits control information.<br>E. The ISDN B channels can be configured with different subnets and encapsulation<br>types when dialer profiles are configured.<br>Answer: A, B, D（E也对么）<img src="images/Emotions/70.gif">

丢丢

稍后由潘老师为您解答 ：）

sod

<P>thanks</P>