Question: In a V2X Application Enabler (VAE) Services context, what is the requirement for supporting HTTP/1.1 over TLS, and what is the recommendation regarding HTTP/2 support?
Option 1: Support of both HTTP/1.1 over TLS and HTTP/2 is mandatory.
Option 2: Support of HTTP/1.1 over TLS is mandatory, while support of HTTP/2 is recommended.
Option 3: Support of HTTP/2 is mandatory, with HTTP/1.1 over TLS being optional.
Option 4: Both HTTP/1.1 over TLS and HTTP/2 are recommended but not mandatory.
Explanation: In the context of VAE Services, ensuring backward compatibility and security is crucial. Making HTTP/1.1 over TLS (a well-established, secure protocol) mandatory ensures a baseline level of security and functionality. Recommending HTTP/2 support allows for the adoption of more efficient protocols when beneficial, without mandating potential upgrades for all implementations. This approach balances universality with the opportunity for enhanced performance.