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Advanced cluster hardening: RBAC least privilege, NetworkPolicy segmentation, secret lifecycle and rotation, non-root pod security, and admission control concepts for certification-style scenarios.
Advanced scenarios linking Kubernetes probes, resource limits, ConfigMap and Secret injection, rolling updates, and NestJS lifecycle hooks for production API workloads.
Advanced integration scenarios between a NestJS API and a React client: BFF boundaries, cookie-based auth, CORS with credentials, DTO validation, and structured error mapping for forms and global UI.
Compose networking, Alembic/Django migrations, SQLAlchemy pools, secrets, volumes, and everyday incidents when a Python service talks to Postgres in containers.
cgroups/limits, LVM, SELinux/AppArmor awareness, namespaces/capabilities, performance, and production ops patterns. Mix of single-answer and multiple-answer items.
systemd units, journalctl, networking basics, disks/mounts, cron, users/SSH hardening awareness, and troubleshooting. Mix of single-answer and multiple-answer items.
Filesystem navigation, permissions, processes, packages basics, systemd awareness, and common CLI tools. Mix of single-answer and multiple-answer items; multi-select questions ask you to select every correct statement.
SVS/practices interplay, risk-based change, CSI measurement, suppliers/OLA, error budgets vs SLAs, and major-incident leadership nuances. Mix of single-answer and multiple-answer items.
Priority matrices, change types, CAB awareness, continuum of control, value co-creation, and linking incidents/problems/changes. Mix of single-answer and multiple-answer items.
ITIL/ITSM awareness: incidents, service requests, problems, changes, and SLA basics. Mix of single-answer and multiple-answer items; multi-select questions ask you to select every correct statement.
Advanced helpdesk operations: major-incident coordination, automation, quality systems, complex troubleshooting, and security handoffs. Mix of single-answer and multiple-answer items; multi-select questions ask you to select every correct statement.
Intermediate helpdesk: triage queues, workarounds vs root cause, access/MFA support, major incidents, and quality metrics. Mix of single-answer and multiple-answer items; multi-select questions ask you to select every correct statement.