How .NET dependency resolution behaves and what it means for security in a large or legacy estate. Covers package references against the older configuration model, the lowest applicable version rule and floating versions, central package management with transitive pinning, the optional lock file and locked restore, the framework boundary where a fix arrives through a runtime update rather than a package bump, build logic and analyzers that execute during compilation, the flat gallery namespace and prefix reservation, package source mapping and the confusion attack it exists to prevent, author and repository signatures, private feeds and shadowing, and a staged upgrade path for a legacy estate.
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None. The flagship course, Safeguard Certified Practitioner, is a beginner-level course — basic familiarity with how software is built helps, but every exam question is answerable from the lessons themselves.
You can retake it after a 24-hour cooldown, as many times as you need. Retakes are free, and each attempt draws a fresh random set of questions.
The Safeguard Certified Practitioner credential is valid for 24 months from issue. The expiry date is printed on the certificate and shown live on its public verification page. Renewing means passing the current exam again.
