Consider a system with demand-paged memory, without which the average time to deal with a fault page size is X when there is an empty frame or the page to be replaced has not been modified, and 2X if the page to be replaced has been modified. The system has a TLB (associative memory) to accelerate the translation process. The average access time to the TLB is 10 nanoseconds and the memory is 50nanoseconds. On average, 20% of the requisitions available an empty frame and 60% demand the replacement of pages that have not been modified. The success rate of consultations with the TLB is 70% and 1% Capture memory access generates page faults. What should be the value of X for the timeaverage effective access to memory does not exceed 10 ms?

a  social news website  is an  internet  website  that features  user-posted stories. such stories are ranked based on popularity, as voted on by other users of the site or by website administrators. users typically comment online on the news posts and these comments may also be ranked in popularity. since their emergence with the birth of  web 2.0, social news sites have been used to link many types of information, including news, humor, support, and discussion. all such websites allow the users to submit content and each site differs in how the content is moderated. on the  slashdot  and  fark  websites,  administrators  decide which articles are selected for the front page. on  reddit  and  digg, the articles that get the most votes from the community of users will make it to the front page. many social news websites also feature an online comment system, where users discuss the issues raised in an article. some of these sites have also applied their voting system to the comments, so that the most popular comments are displayed first. some social news websites also have a  social networking  function, in that users can set up a user profile and follow other users' online activity on the website.