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Container and Kubernetes Security Questions

Security for containerized applications and Kubernetes platforms across the full lifecycle: secure image creation and supply chain, image scanning and vulnerability management, secure base images, image signing, runtime protection and intrusion detection, container isolation and least privilege at the container level, secrets management, pod security policies and admission controllers, network policies and microsegmentation, role based access control for cluster access, cluster hardening and configuration management, secure cluster bootstrapping and upgrades, and compliance considerations and audit logging for container environments. Candidates should be able to discuss tooling, threat models specific to cloud native workloads, and operational practices for preventing and responding to container and orchestration security incidents.

HardSystem Design
0 practiced
Architect a secure Kubernetes platform that spans multiple regions and supports 100 clusters and 5,000 nodes. Describe how you would secure the image supply chain, node hardening, RBAC, network segmentation, secrets management, and compliance/audit trails at that scale.
MediumSystem Design
0 practiced
Design a CI/CD pipeline step that enforces image scanning and image signing before an image is pushed to the production registry. Include tools, failure criteria, where SBoMs and signatures are stored, and how to handle legacy images without SBOMs.
EasyTechnical
0 practiced
Explain what container image signing is and why it matters for a secure supply chain. Describe at least two image signing solutions (for example, Sigstore/cosign and Notary), how signatures are verified at deployment time, and the risks if signing keys are compromised.
EasyTechnical
0 practiced
What is an SBOM (Software Bill of Materials) for a container image? Describe the key elements an SBOM should contain and explain how SRE teams can use SBOMs to reduce supply chain risk.
MediumTechnical
0 practiced
Compare cosign (Sigstore) and Notary/TUF for container image trust. Discuss differences in key management, transparency logs, revocation, and integration with Kubernetes admission controls.

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