Question: In a V2X Application Enabler (VAE) Services scenario, what is the mandatory protocol version supported over TLS for HTTP communication?
Option 1: HTTP/2 with mandatory TLS upgrade
Option 2: HTTP/1.0 without TLS requirements
Option 3: HTTP/1.1 with mandatory TLS support
Option 4: HTTP/3 as specified in emerging IETF drafts
Explanation: In VAE Services, to ensure secure and reliable communication, the use of HTTP/1.1 over Transport Layer Security (TLS) is mandated. This setup provides a balance between compatibility and security for the services' operation, especially in sensitive environments like Vehicle-to-Everything (V2X) communications. The correct answer reflects this requirement, distinguishing it from other options that either specify different protocol versions or incorrect security mandates.