Which pulse speeds are listed besides the slowest 10 pps?

• A. 5 pps and 15 pps
• B. 15 pps and 25 pps
• C. 20 pps and 40 pps
• D. 10 pps and 20 pps

Answer: (C)

Pulses per second tell you how fast the signaling signal cycles. When the slowest rate is 10 pps, the standard accompanying options shown in the reference chart are the higher speeds that usually appear with it. The pair that fits this pattern is 20 pps and 40 pps, since those are the speeds typically listed alongside the slowest rate in the common sets. The other choices don’t fit because they either include values at or below the slowest rate, or mix speeds that aren’t shown together with 10 pps in the usual listing.