Answer from cs61c-bx (Tuan Ha 16989532) for Question 2
Fixed-size pages help to eliminiate the need to find a contiguous block of memory to allocate to a program since the system only need to find sufficient number of pages in memory. It also simplifies the translation process.

Bigger chunks: reduce page fault since we can accomodate more data.
Smaller chunks: faster access time since it's smaller.