A. the CIR rate of the lowest speed connection multiplied by the num ber of circuits
B. the CIR rate of the lowest speed connection
C. the CIR rate of the highest speed connection
D. the sum of all the CIRs divided by the number of connections

A. Update packets route reliable change information only to the affected routers.
B. Reply packets are multicast to IP address 224.0.0.10 using RTP.
C. On high - speed links, hello packets are broadcast every 5 seconds for neighbor discovery.
D. Reply packets are used to send routing updates.
E. On low - speed links, hello packets are broa dcast every 15 seconds for neighbor discovery.