Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Computer Organization and Architecture Memory Management Type of RAMS
256 Mb DRAM is organized as a 32M × 8 memory externally and as a 16K × 16K square array internally. Each row must be refreshed at least once every 50 mili second to forestall loss of data; refreshing one row takes 100 nanoseconds. What fraction of the total memory bandwidth is lost to refresh cycles?
1
6.6%
2
3.3%
3
9.9%
4
4.3%