Question: How dose second chance page-replacement algorithm work?

solution:

The basic algorithm of second-chance replacement is a FIFO replacement algorithm. When a

page has been selected, however, we inspect its reference bit. If the value is 0, we proceed to

replace this page; but if the reference bit is set to 1, we give the page a second chance and

move on to select the next FIFO page. When a page gets a second chance, its reference bit is