cipher suite

They then communicate using the common cipher suite that offers the highest level of security.

然后它们使用提供最高安全级别的通用密码组合进行通信。

If they do not have a cipher suite in common, then secure communication is not possible and CICS closes the connection.

如果它们没有共通的密码组合，那么就不可能实现安全通信，CICS会结束连接。

Specifying a cipher suite in this manner overrides any cipher suites that are associated with the specifed Security Level.

以这种方式指定的密码套件将覆盖与指定的安全级别关联的任何密码套件。

I personally think Amazon had selfish reasons for choosing this cipher suite.

我个人认为Amazon选择这个密码套件的原因是出于自私的考虑（译注：这里说“自私”的意思是，Amazon出于性能的考虑，降低了安全的强度）。