GATE 2021 · Set-2
Consider a three-level page table to translate a 39-bit virtual address to a physical address, split as Level 1 offset (9 bits), Level 2 offset (9 bits), Level 3 offset (9 bits), Page offset (12 bits).
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.