Is this the way a load balancer does the work?

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http://serverfault.com – I have a snapt balancer with one front end listening on port 9055, attached to a backend with only one server at the moment (for testing) also listening on port 9055. When I go to a browser and type: http://load-balancer-name:9055 the browser shows the page of http://back-end-server:9055 which shows the page I was expecting. Once that the load balancer contacts the back end server, will the response from the server go directly back to the client, or will it go back to the load balancer, and the load balancer send it to the client? (HowTos)