48、 Which of the follo
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48、 Which of the following is used to provide for the AnyConnect client to automatically detect an unresponsive ASA device? AnyConnect客户端使用下面的哪一个协议来自动检测一个不响应的ASA设备?
A. TCP
B. DTLS
C. DPD
D. SCEP
参考答案:
C