- What's the difference between an Interface and an Abstract class? When would you use which?
- Linux commands (grep, ls, cd, echo, chmod, ..)
- Given a dataset with Siri user communications, how would you find conversations in which users have problems communicating with the digital assistant?
- If you have a large dataset and want to add and remove elements, would you rather use a linked list or an array?
- What are design patterns? Name one example + explain how they work and why one should use them?

Question

- What's the difference between an Interface and an Abstract class? When would you use which?
 - Linux commands (grep, ls, cd, echo, chmod, ..)
- Given a dataset with Siri user communications, how would you find conversations in which users have problems communicating with the digital assistant?
- If you have a large dataset and want to add and remove elements, would you rather use a linked list or an array?
- What are design patterns? Name one example + explain how they work and why one should use them?

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