Answer questions from interview reports and job posts at 145 companies, get graded on what you missed, then take the follow-ups.
Question for November 11
Cryptography basics
In cryptography, when do you use symmetric keys, asymmetric keys, and hashes?
145 companies named across 699 questions
Write two or three sentences, the way you'd say it in an interview.
Cover every core point and you pass. Anything you missed gets a hint.
Pass the core points and the interviewer keeps going. Where you get stuck is what you study today.
You don't have to track them. They're mixed back into your 10 daily questions, and each correct answer stretches the gap to 3, 7, then 30 days.
This is the forgetting curve Hermann Ebbinghaus measured in 1885.
| Time since learning | Kept |
|---|---|
| 20 min | 58% |
| 1 hour | 44% |
| 9 hours | 36% |
| 1 day | 34% |
| 2 days | 28% |
| 6 days | 25% |
| 31 days | 21% |
Send us a question you always ask as an interviewer. Once it's accepted, it joins the question bank with your nickname.
