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Sandvine Quality Assurance Engineer Interview Question (student candidate)

I interviewed in Toronto, ON (Canada) and was asked:
"What is the difference between a link list and a double link list and what is the difference between a stack and a heap?"
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Part of a Quality Assurance Engineer Interview Review - one of 21 Sandvine Interview Reviews

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A link list has 1 pointer point to the next. The Double link list has 2 pointers, one point to the Next and one point to the previous (its neighbors).
Memory in stack will be clear when exit the function and memory automatic de-allocate while the Heap is a memory will store in memory as long as user de-allocate it i.e. malloc and free. Stack is smaller in size, but faster than Heap.
- Dominator on Sep 2, 2013 Flag Response

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