easyCloud & DevOps
Pod Placement Decision
Choose a node that satisfies CPU, memory, and label constraints.
Practice challengeCodeArena challenge library
24 challenges match your filters.
easyCloud & DevOps
Runner Placement Decision
Schedule a runner onto an eligible isolated node.
Practice challengemediumCloud & DevOps
Worker Placement Decision
Select a node for a background worker.
Practice challengehardCloud & DevOps
Scanner Placement Decision
Place a malware scanner using deterministic capacity rules.
Practice challengeeasyCloud & DevOps
Deployment Availability Gate
Decide whether a rolling deployment may continue.
Practice challengeeasyCloud & DevOps
Runner Upgrade Gate
Evaluate availability before advancing a runner rollout.
Practice challengemediumCloud & DevOps
Database Proxy Rollout Gate
Check whether proxy rollout can proceed.
Practice challengehardCloud & DevOps
Search Worker Rollout Gate
Evaluate a worker deployment against max-unavailable.
Practice challengeeasyCloud & DevOps
Database Backup RPO
Check observed database backup gaps against RPO.
Practice challengeeasyCloud & DevOps
Object Store Backup RPO
Evaluate protected-object backup timing.
Practice challengemediumCloud & DevOps
Audit Archive RPO
Measure audit-archive backup compliance.
Practice challengehardCloud & DevOps
Source Registry Backup RPO
Check official-source registry backup gaps.
Practice challengeeasySecure Coding
Support Log Redactor
Remove emails, card-like numbers, and named secrets from support logs.
Practice challengeeasySecure Coding
Runner Log Redactor
Redact sensitive patterns from code-runner diagnostics.
Practice challengemediumSecure Coding
Application Note Redactor
Remove contact and secret material from operational notes.
Practice challengehardSecure Coding
Webhook Error Redactor
Redact sensitive values before webhook errors are persisted.
Practice challengeeasySecure Coding
Scholarship Source Allowlist
Validate a scholarship URL against an official-host allowlist.
Practice challengeeasySecure Coding
Runner Callback Allowlist
Validate a runner callback target.
Practice challengemediumSecure Coding
Document Fetch Allowlist
Validate a remote document source without private-network access.
Practice challengehardSecure Coding
Institution API Allowlist
Validate an institutional API endpoint.
Practice challengeeasySecure Coding
Marketplace Permission Decision
Evaluate deny-overrides marketplace permissions.
Practice challengeeasySecure Coding
Admissions Permission Decision
Evaluate admissions workspace authorization rules.
Practice challengemediumSecure Coding
Family Permission Decision
Evaluate guardian and child resource permissions.
Practice challengehardSecure Coding
Runner Permission Decision
Evaluate runner operations under deny-overrides policy.
Practice challenge