Question

Assuming a 2-KB page size, what are the page numbers and offsets for the following address references (provided as decimal numbers):

1. 12546
2. 758
3. 25983
4. 4582
5. 1254

Answer 1

First we understand how to calculate the Page Number and Offsets for the given address references :-

1. page number = A / page_size. this is the page number within the process address space. e.g. address in the process, A = 10,000. page size = 4k. ...
2. offset = A (mod) page_size. this is the distance from the beginning of the page. e.g. address in the process, A = 10,000. page size = 4k.

Here we took the page size 2 KB

since, 1 KB =1024 Bytes

So, 2 KB = 1024*2 = 2048 Bytes

Page Number :-

12546 / 2048 = 6

758 / 2048 = 0

25983 / 2048 = 12

4582 / 2048 = 2

1254 / 2048 = 0

Offset :-

NOTE :- Here % represents mod, not percentage sign

12546 % 2048 = 258

758 % 2048 = 758

25983 % 2048 = 1407

4582 % 2048 = 486

1254 % 2048 = 1254

Hope u get your answer !!!!!!