Amazon firestick optimizing system storage and applications

This technology is used to produce high-quality documents that look good on the computer screen and in print.

When is an original work considered public domain? a. when posted via social media b. when it is posted on the internet c. when a copyright symbol is not included with the piece of work d. when explicit permission is given by the author / owner

What type of file does a cookie place on web site visitors' computers so that web site managers can customize their sites to their visitors' preferences?