多选题Which three of these statements about the IP service level agreement （SLA） sender are true？ （）ASLA sender target can be an IP hostBSLA sender sends a probe packet and a response probe packetCSLA sender sends a probe packetDSLA sender target must be a routerESLA sender target can be an IP SLA responder
多选题
Which three of these statements about the IP service level agreement （SLA） sender are true？ （）
A
SLA sender target can be an IP host
B
SLA sender sends a probe packet and a response probe packet
C
SLA sender sends a probe packet
D
SLA sender target must be a router
E
SLA sender target can be an IP SLA responder
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