Optimal page replacement . is the page-replacement algorithm most often implementedb. is used mostly for comparison with other page-replacement schemesc. can suffer from belady's anomalyd. requires that the system keep track of previously used pages

A. Is the page-replacement algorithm most often implemented.

Explanation:

This algorithm is used when a page that is not present in memory is called, leading to the Operating System to replace one of the existing pages with the needed one. There are different replacing algorithms in order to decide which page will be replaced.

This algorithm is implemented to reduce the number of failures and provide a better funcionality and speed the process by discarding pages that won't be used for a long period of time.

universal windows platform is an open source api created by microsoft and first introduced in windows 10. the purpose of this platform is to develop universal apps that run on windows 10, windows 10 mobile, xbox one and hololens without the need to be re-written for each. it supports windows app development using c++, c#, vb.net, and xaml. the api is implemented in c++, and supported in c++, vb.net, c#, f# and javascript. designed as an extension to the windows runtime platform first introduced in windows server 2012 and windows 8, uwp allows developers to create apps that will potentially run on multiple types of devices.