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Intervyu — Developer Foundations 20
20 short interview practice cards: Python, transactions, HTTP and testing. English questions with Uzbek and Russian answer summaries.
General
20 ta karta
Kartalar roʻyxati
01
What is a Python list?
Other
An ordered, mutable sequence.
02
How is a tuple different from a list?
Other
A tuple cannot have its elements replaced.
03
What does a Python set store?
Other
Distinct elements, without positional indexing.
04
What is a dictionary?
Other
A mapping from unique keys to values.
05
What is a shallow copy?
Other
A new container that shares nested objects.
06
What is a database transaction?
Other
A group of operations committed as one unit.
07
What does COMMIT do?
Other
It completes a transaction and preserves its changes.
08
What does ROLLBACK do?
Other
It cancels the current transaction's changes.
09
What is a savepoint?
Other
A point for partial rollback inside a transaction.
10
What does atomicity mean?
Other
A transaction's changes succeed together or are cancelled.
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