Which two criteria must be met to support the ICMP echo IP SLA?

Which two criteria must be met to support the ICMP echo IP SLA? (Choose two)

A.The destination device must support the echo protocol

B.default gateway must be configured for the source and destination devices

C.The source device must be running Layer 2 services.

D.The source and destination devices must be Cisco devices

E.The source device must be a Cisco device but the destination device can be from any vendor

正确答案是AE