<span>The client browser requests a page from a Web server.</span>
This depends on what program you're using. Some programs can only read certain files exclusive to that program, such as .psd files can usually only be read in Photoshop or other adobe programs. Many fields of work (Journalism, the Arts, Design, etc.) ask for .psd files to be converted to either .png, .jpg, or .tiff so that it can be seen on many other platforms.
For images especially, files are more compatible either on a program or printed. for example, .png files are good for storing color data from computer to computer, but if you print a .png file, the quality is poor. hence it's recommended to save files you want to print for designs as .jpeg, because .jpeg can more easily be printed and will then be presented at a high quality.
Sometimes color quality changes depending on CMYK as well but that's a whole other ball of wax.
<span>Authorizing technologies are technologies that controls the use of system and network resources through authentication and authorization.
</span><span>Enabling technologies are innovation technologies that drive radical change in the capabilities of a user or culture.
</span>Obstructing technologies include blocking<span> and filtering, content manipulation, attacks.
</span>Preemption means "prior seizure of" and preemptive technologies <span>take control of the operating system from one task and giving </span>it<span> to another task.
</span><span>Technologies that function within the established system are called enabling technologies.</span>
