Practice test

C# Interview Mock 5

Mock 5 of the C# Interview Test Series: 15 medium questions on defensive copies with in parameters, string interning, the Liskov substitution principle, generic variance, event-handler memory leaks, OrderBy vs ThenBy, one-per-key LINQ grouping, ConcurrentDictionary.GetOrAdd, custom exceptions, ConfigureAwait(false), CPU-bound work in async libraries, IAsyncDisposable, record equality with inheritance, nullable attributes for Try methods and list patterns. Mixed formats (theory, code output, code completion, multi-select and numeric), each with a full teaching explanation after you submit. Included in Full Access.

Questions

15

Time

25 min

Right answer

+1

Wrong answer

0

15 marks in all · pass mark 9