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Capstone Quiz

Test complete allocator understanding

Get every question correct to pass this checkpoint. You can review feedback, revise your answers, and submit again.

1. Two physically adjacent free blocks have payload capacities 40 and 88 with a 24-byte header. What is the merged payload capacity?

Select one answer.

128 152 176 112

2. A free list links blocks A and C, but a live block B lies physically between them. May A and C be coalesced?

Select one answer.

Yes; every linked pair is physically adjacent No; list adjacency does not establish contiguous free storage Yes; mark B free without informing its owner Only if A and C have equal sizes

3. The capstone calloc reuses a dirty 64-byte block for 3 elements of 8 bytes. What must it do?

Select one answer.

Clear the requested 24 bytes before returning Clear no bytes because free already erased them Clear only the header Copy old bytes into a larger region

4. Three adjacent free blocks each have payload capacity 16 and headers of 24 bytes. What payload capacity results after merging all three?

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