Can Redis both verify the identity of the client and choose the RESP protocol version simultaneously?

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No, Redis cannot both verify the identity of the client and choose the RESP protocol version simultaneously as these are two separate processes.

To verify the identity of the client, Redis uses authentication mechanisms such as password-based authentication or SSL/TLS certificates. This process happens before any data is exchanged between the client and Redis.

On the other hand, choosing the RESP protocol version is a negotiation process between the client and Redis. The client sends a protocol version in the first data packet, and Redis responds with the chosen version if it is supported. This negotiation happens after the authentication process.

Therefore, Redis cannot perform both processes simultaneously as they happen at different stages of the client-server communication.