Question

If the size of logical address space is 2 to the power of m, and a page size is 2 to the power of n addressing units, then the high order _____ bits of a logical address designate the page number, and the ____ low order bits designate the page offset.

a) m, n
b) n, m
c) m - n, m
d) m - n, n

Answer 1

The high order m - n bits of a logical address specify the page number, and the low order n bits specify the page offset in a paging memory management scheme. The unit for one million bytes in computer memory is called a Megabyte (MB).

Step-by-step explanation:

When the size of the logical address space is 2 to the power of m, and the page size is 2 to the power of n addressing units, you have a simple division of the address space into pages. The page number is determined by the higher-order bits of the address and the page offset by the lower-order bits.

Therefore, the correct answer is that the high order m - n bits of a logical address designate the page number, and the low order n bits designate the page offset. Multiplicative prefixes are commonly applied in computing, particularly in memory measurement. For example, the unit for one million bytes is termed a Megabyte (MB).