GATE | GATE-CS-2009 | Question 34

A multilevel page table is preferred in comparison to a single level page table for translating virtual address to physical address because
(A) It reduces the memory access time to read or write a memory location.
(B) It helps to reduce the size of page table needed to implement the virtual address space of a process.
(C) It is required by the translation lookaside buffer.
(D) It helps to reduce the number of page faults in page replacement algorithms.

Answer: (B)
Explanation: The size of page table may become too big (See this) to fit in contiguous space. That is why page tables are typically divided in levels.
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