Quiz submission record for quiz7-1-2 at Tue Aug  3 01:09:39 2004:

Your Answer for Question 1:
The TLB is a cache that holds a subset of virtual-to-physical page mappings of the page table. Essentially, it holds the most recently used pages. Caches are temporary storages for data that has been accessed most recently. 

TLB miss rates are typically lower than LI cache miss rates because the TLB deals specifically with pages, chunks of memory, whereas caches deal with blocks of data (words/bytes). Therefore, it is much more likely to get a cache data miss than a page miss/fault. 


Your Answer for Question 2:
The idea behind multi-level paging is mainly driven by the fact that a page table can be enormous for any process. Since each process has its own page table, there’s not enough room to have all these page tables residing in memory.

A second level page table exists only for valid entries of super level page table. Thus, it’s easier if the SPN is to the left of the 2PN because it serves as a “valid” check. 



Your unique submission ID is quiz7-1-2-cs61c-ei-1091520579-28.