優先度の高い更新プログラム(A classification used on the Windows Update web site and by the Windows Update Service to recommend Microsoft software updates and drivers that help protect against the latest publicly known security threats and reliability issues. All software updates and drivers that can be installed by turning on Automatic Updates on your computer are classified as high priority. These can also be installed by visiting the Windows Update web site)
ホストの優先順位(For Network Load Balancing, a host's precedence for handling default network traffic for TCP and UDP ports. It is used if a host within the cluster goes offline, and it determines which host within the cluster will assume responsibility for the traffic previously handled by the offline host)