Certificate authentication in this scenario really means "is the server providing a valid certificate?"

在此场景中的证书认证实际上意味着“是服务器提供了有效的证书吗？”

youdao

So you can leave this text field empty (none) and later check that a valid certificate is selected at run time.

因此，您可以将此文本字段留空(none)并在以后运行时检查是否选择了有效的证书。

youdao

In the first case, that string is an explicit service level, for example GoldService, and in this case it is the CN of a verified, valid certificate.

在第一个实例中，字符串是一个直接的服务级别(例如GoldService)，在这种情况下它是已通过检验的、有效证书的CN。

youdao

Conservative Karl McCartney suggested it should be made compulsory to display a valid insurance certificate or sticker in the window of a vehicle, in the same way a tax disk had to be shown.

BBC: MPs urge action on cheaper car insurance

Landlords who do not have a valid Energy Performance Certificate (EPC) issued by an authorised assessor will be given seven days to provide one.

BBC: Slough landlords checked for energy ratings certificates

With these forms of ownership, your beneficiaries would simply need to provide a death certificate and a valid form of ID to take ownership of the property.

FORBES: Is Lack of Planning Putting Your Family in Danger?