Joseph – What prompts you to ask this question? Did you run into some kind of problem.
When you use BatchPatch to perform a standard Windows Update (online, not using cached mode), then the target computer Windows Update Agent (WUA) checks the integrity of the patches that it downloads. If you use BatchPatch to perform a Windows Update using cached mode, then BatchPatch downloads the updates and then pushes them to the target computer. The target computer Windows Update Agent (WUA) verifies the patch before installing it. If it cannot verify it, then it does not install it.