Need help in Operating Systems. multiple answers allowed for 1,2.

Which of the following statements are true for swap space? Hard drive or Solid state disk can be used for swap space The basic swap space unit is a page. The overall size of swap space can be larger than the physical memory. Swap space is as fast as TLB. Question 2 Which of the following statements are true for page fault? Upon a page fault, the OS is invoked to service the page fault by swapping the page into memory. When the present bit is 0 , the PFN value is the disk address of the swap space in the disk. When the OS accesses a page table entry and see the present bit is 0 , a page fault will be issued. The process will be in the blocked state while the page fault is being serviced. We have the following reference string: 34321229123429 . Right now the page reference reaches at the one in red 29. The VPNs have been allocated to physical frames in the following way: \begin{tabular}{|l|} 43 \\ 12 \\ \hline \end{tabular} Which VPN will be replaced for the highllighted 29 under the FIFO policy