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### Python Exercise — Keep or Drop Cities from a List Create a list that contains different values, including **another list nested inside the main list**. Then create **two methods**: …

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Aug 12, 2026

Quiz: Which syntax creates a list of squared numbers from 0 to 4 in a single line?

[x**2 for x in range(5)] is a list comprehension producing [0, 1, 4, 9, 16] .

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Aug 12, 2026

Quiz: Why are Python tuples hashable while lists are not?

Because tuples are immutable (their contents cannot change), they produce a fixed hash value and can be used as dictionary keys.

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Oct 25, 2026

Quiz: Which Linux command displays active socket connections, listening ports, and protocol statistics?

ss -tuln displays TCP (-t), UDP (-u), listening sockets (-l), without resolving names (-n).

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Oct 25, 2026

Quiz: Which command prints the full list of shared dynamic libraries required by an executable binary?

ldd (list dynamic dependencies) prints the shared objects (.so files) required by each program or library argument.

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Oct 25, 2026

Quiz: Which syntax is used to represent an item in an ordered YAML sequence (list)?

YAML sequences (lists) use a hyphen followed by at least one space ( - item ) .

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