Test by Bikram | Mock GATE | Test 3 | Question: 7

Question

A logical address space of eight pages of $1024$ words each is mapped onto a physical memory of $32$ frames.

How many bits are there in its physical address?

• A. $13$
• B. $5$
• C. $15$
• D. $14$

Answer 1

logical address needs (10+3) bits[1024=2^10 and 8=2^3]

for physical addressing  the pages have to be mapped into 32 frames.so physical address needs (10+5)bits [1024=2^10 and 32=2^5]

=15 bits