- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
多項(xiàng)選擇題
Which of the following statements regarding ISDN are correct?（）
A. Each ISDN B channel has transmission speeds of up to 64 kbps.
B. The ISDN B channel can carry video, voice or data.
C. The ISDN B channel transmission rate varies depending on the service used.
D. The ISDN D channel transmits control information.
E. The ISDN B channels can be configured with different subnets and encapsulation types when dialer profiles are configured.
你可能感興趣的試題
