A method and apparatus for accurately measuring forces, particularly forces which are applied in a vibrationaly noisy environment. If the data of only a few pages of a block are to be updated, the updated pages are written into another block provided for this purpose. A projection of the optical module passes over the window to be positioned in the first sleeve and moves a ferrule a bit to press a spring when the connector is inserted in the first sleeve. The content provider, or an entity on its behalf, then implements DNS entry aliasing so that domain name requests for the host cue the CDN DNS request routing mechanism. Such technology is particularly useful in light duty vehicle maintenance technology.