Which two characteristics of an ICMP echo-based IP SLA are true?

Which two characteristics of an ICMP echo-based IP SLA are true? (Choose two)

A.It can use RSPAN to report network statistics to a designated remote port

B.It aggregates traffic statistics for reporting on a configurable basis

C.It requires a remote device to log and maintain collected data

D.It measures traffic to determine the reliability of a connection from a Cisco router to a designated end device

E.It generates continuous traffic to monitor network performance

正确答案是DE