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Aporeon

Technical interview practice, from one developer to another.

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ASP.NET Core Practical API Labs

Authorization & Files

Capability policies, resource ownership, secure uploads, and streamed downloads.

4 drillsPractice one at a timeOrdered pathCoding problem

Recommended start

Capability Policy

Maps a named capability to an ASP.NET Core policy and enforces it at the endpoint boundary.

Easy~15 minStep 1 of 4

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1Capability PolicyRecommended startMaps a named capability to an ASP.NET Core policy and enforces it at the endpoint boundary.Coding problemEasy~15 min.NETASP.NET CoreC#Practice 2Resource OwnershipLoads a resource once, evaluates owner-or-capability authorization, and avoids trusting route ownership claims.Coding problemMedium~25 min.NETASP.NET CoreC#Practice 3Secure UploadValidates size and signature, writes under a generated storage key, and keeps untrusted files outside the public web root.Coding problemMedium~25 min.NETASP.NET CoreC#Practice 4Authorized DownloadAuthorizes metadata before opening storage and streams the file with safe headers and range support.Coding problemMedium~25 min.NETASP.NET CoreC#Practice

Practice order

4 drillsOne at a time

1Capability PolicyUp next / Easy / ~15 min
2Resource OwnershipMedium / ~25 min
3Secure UploadMedium / ~25 min
4Authorized DownloadMedium / ~25 min