The Integrated Services Digital Network (ISDN) Basic Rate
Interface (BRI) provides which of the following?
A.) 1.544 Mbps
B.) 23B + 1D Channel
C.) 24B + 1D Channel
D.) 2B + 1D Channel
E.) 23B + the Disney Channel
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Answer: D
Each B (Bearer) Data channel is 64K
The D (Control) channel is 16K
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CCNA 
