Once a client is presented with the HSTS policy, it caches the information for the specified max-age period. During that period, the browser refuses to access the web service over unencrypted HTTP, and refuses to grant exceptions to certificate errors (if the site previously presented a valid, trusted certificate).
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term laser originated as an acronym for light amplification by stimulated emission of radiation.
With fiber, the source can be in an easily accessible location and the fiber in any remote place. Changing the source is no longer a problem. How Fiber Optic Lighting Works. Fiber optic lighting uses optical fiber as a âlight pipe,â transmitting light from a source through the fiber to a remote location.