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Publicaciones del Canal
Which SQL operation usually becomes slower as a table grows if no suitable index exists?
| 2 | Which structure is typically used internally for Breadth-First Search (BFS)? | 51 |
| 3 | Which loop is most appropriate when the number of iterations is unknown beforehand? | 79 |
| 4 | What is the result of:
Boolean("0") | 407 |
| 5 | Which component is most commonly added to absorb sudden spikes in workload? | 115 |
| 6 | A team frequently changes business requirements. Which design characteristic becomes most valuable? | 137 |
| 7 | Which situation most strongly suggests a need for refactoring? | 504 |
| 8 | What is data leakage? | 153 |
| 9 | What is the main advantage of using a Python generator instead of returning a list? | 763 |
| 10 | Hash maps provide near O(1) average lookup time by mapping keys directly to storage locations. | 175 |
| 11 | A dataset contains ages ranging from 1 to 100 and incomes ranging from 100 to 1,000,000. Why might scaling be useful? | 168 |
| 12 | A model achieves 99% accuracy detecting fraud, but only 1% of transactions are actually fraudulent. What metric should you examine next? | 154 |
| 13 | Why is debouncing often used for search bars? | 161 |
| 14 | Two transactions modify the same record simultaneously and produce inconsistent results. What issue occurred? | 175 |
| 15 | What is the output of this code?
x = [1, 2, 3]
y = x y.append(4) print(len(x)) | 627 |
| 16 | What does high variance usually indicate? | 177 |
| 17 | What problem was DNS primarily created to solve? | 177 |
| 18 | A website loads slowly because it requests 500 small images. What is the main issue? | 544 |
| 19 | Why is a model evaluated on data it has never seen before? | 170 |
| 20 | Why do databases use transactions? | 568 |
