To initiate testing， which port does a Cisco IOS IP SLA source use to send a control message to an IP SLA responder？ （）
- A、UDP port 2020
- B、UDP port 1967
- C、TCP port 2020
- D、ICMP port 1967
正确答案:B
答案解析:有
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To initiate testing， which port does a Cisco IOS IP SLA source use to send a control message to an IP SLA responder？ （）
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