A load balancer receives a TCP SYN packet from a client and immediately sends the packet on to a server. This is an example of which type of solution?

In a packet forwarding (pass-through) architecture, the load balancer inspects the incoming TCP SYN and immediately forwards it to the selected server without terminating the client connection. The load balancer acts as a transparent intermediary, so the server sees the client's original IP address and the TCP session is established directly between client and server, never ending at the load balancer itself.

Full proxy architecture terminates the client-side TCP connection at the load balancer and creates a separate new TCP connection toward the server, which is the opposite behavior of immediately forwarding the SYN packet.

TCP compression reduces payload size to improve bandwidth efficiency and has nothing to do with how the load balancer handles connection setup or forwarding.

TCP optimization refers to performance techniques such as connection pooling or buffering, not to the architectural pattern of transparently forwarding raw client packets.