Which two characteristics of an icmp echo based ip sla are true ? (choose two)
A. it requires a remote device to log and maintain collected data
B. it can use RSPAN to report network statistics to a designated remote port
C. it aggregates traffic statistics for reporting on a configurable basis
D. it generates continuous traffic to monitor network performance
E. it measures traffic to determine the reliability of a connection from a cisco router to a designated end device.
