Which of the following are suitable protocols for securing VPN connections at the lower layers of the OSI model?在OSI的低层模型中,以下哪项协议适合用于VPN的安全连接()
- A、PKCS#10 and X.509
- B、TLS and SSL
- C、IPsec and L2TP
- D、S/MIME and SSH
正确答案:C
答案解析:有

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Which of the following are suitable protocols for securing VPN connections at the lower layers of the OSI model?在OSI的低层模型中,以下哪项协议适合用于VPN的安全连接()
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