Long description

Part (a): A block consists of three rows. The rows are labeled P T 1, P T 2 and offset. The bits of the segments are given as 10, 10, 12.

Part (b): A block labeled top level page table has 1023 rows labeled from bottom to top as follows. 0, 1, 2, 3, 4, 5, 6, upto 1023. All the rows except the first, second and last are shaded.

This block is pointed to three other blocks labeled second level page tables which are placed one below the other. The blocks also consist of 1023 rows. Arrows are pointed from all the rows of these blocks. From the top block, the arrows are pointed to the Page table for the top 4 M of memory and from the top block, the arrows are pointed to the pages.