Computer Science and Information Technology
2022 · Paper 1
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Complete GATE CSE 2022 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 31–33 of 65. Imported answers require review unless explicitly marked reviewed.
Question 31
Open questionCSNAT1 markNeeds review
Consider a relation
with the following three functional dependencies.
The number of superkeys in the relation R is ____________.
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The number of arrangements of six identical balls in three identical bins is _____.
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Open questionCSNAT1 markNeeds review
A cache memory that has a hit rate of 0.8 has an access latency 10 ns and miss penalty 100 ns. An optimization is done on the cache to reduce the miss rate. However, the optimization results in an increase of cache access latency to 15 ns, whereas the miss penalty is not affected. The minimum hit rate (rounded off to two decimal places) needed after the optimization such that it should not increase the average memory access time is ____________.
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