Consider a three-level page table to translate a 39-bit virtual address to a physical address as shown below. The page size is 4KB (1KB = $2^{10}$ bytes) and page table entry size at every level is 8 bytes. A process $P$ is currently using 2GB (1GB = $2^{30}$ bytes) virtual memory which is mapped to 2GB of physical memory. The minimum amount of memory required for the page table of $P$ across all levels is ________ KB.

Consider a three-level page table to translate a 39-bit virtual address to a physical address as shown below. The page size is 4KB (1KB = 210 bytes) and page table entry size at every level is 8 bytes. A process P is currently using 2GB (1GB = 230 bytes) virtual memory which is mapped to 2GB of physical memory. The minimum amount of memory required for the page table of P across all levels is … KB.

Topic-wise GATE CS PYQs with verified steps