An administrator deploys a site in which the load balancer only sees the ingress traffic from the client. All egress traffic from the server bypasses the load balancer. Which type of solution is this?

In packet forwarding architecture, the load balancer intercepts only inbound client requests and forwards them to the selected server, but the server bypasses the load balancer entirely on the return path and responds directly to the client. This reduces load balancer bandwidth consumption and is the defining characteristic that distinguishes it from a full proxy model.

Delayed binding is a load balancing technique where the load balancer postpones completing the TCP handshake with the client until a backend server is selected - it describes a connection timing mechanism, not a traffic flow path.

Switching refers to Layer 2 network forwarding based on MAC addresses and is a general networking function, not a load balancing traffic architecture.

Full proxy architecture means the load balancer terminates both the client-side and server-side TCP connections, acting as an intermediary for all traffic in both directions - the opposite of what is described.