Which DNS label points to the DANE information used for HTTPS connections to https://www.example.com/?

Which DNS label points to the DANE information used for HTTPS connections to https://www.example.com/?

• A. example.com
• B. dane.www.example.com
• C. www.example.com
• D. _443_tcp.www.example.com

Answer: (D)

The label that points to the DANE (DNS-based Authentication of Named Entities) information for HTTPS connections to a domain is specifically formatted to indicate the service associated with the data. In the case of HTTPS, the appropriate format uses a specific prefix to indicate the service and protocol in question. The correct label is _443_tcp.www.example.com. The use of the underscore indicates that this is a special DNS entry, and "443" refers to the port commonly used for HTTPS connections. The "_tcp" specifies that the entry relates to TCP, the underlying protocol used for HTTP over TLS/SSL. Combining these elements together in this format directs queries for the DANE information for HTTPS connections pertaining to www.example.com. While other options appear related to the base domain or subdomains, they do not follow the required DANE naming convention that integrates the relevant service, protocol, and connection specifics.

The label that points to the DANE (DNS-based Authentication of Named Entities) information for HTTPS connections to a domain is specifically formatted to indicate the service associated with the data. In the case of HTTPS, the appropriate format uses a specific prefix to indicate the service and protocol in question.

The correct label is _443_tcp.www.example.com. The use of the underscore indicates that this is a special DNS entry, and "443" refers to the port commonly used for HTTPS connections. The "_tcp" specifies that the entry relates to TCP, the underlying protocol used for HTTP over TLS/SSL. Combining these elements together in this format directs queries for the DANE information for HTTPS connections pertaining to www.example.com.

While other options appear related to the base domain or subdomains, they do not follow the required DANE naming convention that integrates the relevant service, protocol, and connection specifics.