A computer system has a $16-$bit address bus and a $4K$ page size. For the partial page table shown below:

$($a$)$ What physical address corresponds to logical address $2345H,$ or is this logical address not currently in physical memory?

$($b$)$ What logical address corresponds to physical address $2345H,$ or is this physical address not currently assigned to a logical address?

$\backslash$table$[[$Address$,$Frame,Count,Valid,Dirty$],[0,11,00,1,0],[1,01,11,1,0],[2,01,11,0,1],[3,10,10,1,0],[,00,01,1,1],[,,,]]$