| Create AWS IAM Admin User with Group and Policy | Easy |  Accenture | Free |
| Create IAM Role for EC2 with Full IAM Access | Easy |  Coinbase | Free |
| Create a Hello World Lambda Function | Easy |  Adobe | Free |
| Launch an EC2 Web Server Instance | Easy |  EPAM | Free |
| Design Egress Only VPC with NAT | Medium |  Twitch | Free |
| Audit and Enforce Least-Privilege IAM Permissions | Easy |  Amazon | Free |
| Create Route 53 Hosted Zone and DNS Records | Easy |  Kayak | Free |
| Create Route 53 Health Checks | Easy |  Autodesk | Free |
| Build a Serverless API with Lambda, API Gateway, and DynamoDB | Hard | Amazon | Free |
| Deploy an Internal Web App with VPC, EC2, ALB, and Route 53 | Hard |  Lyft | Free |
| Managing High I/O Processes | Easy |  Revolut | Free |
| Analyzing Log Partition Usage | Medium |  RedHat | Free |
| Using Unmounted Partitions | Medium | RedHat | Free |
| Tracing Log File Writes | Easy |  Bloomberg | Free |
| Port Conflict Resolution | Easy |  Datadog | Free |
| Diagnose Nginx CPU Bottleneck | Easy |  Palantir | Free |
| Debug SSH Lockout | Medium |  TCS | Free |
| Monitoring Process Ownership | Medium |  HashiCorp | Free |
| Rapid Disk Growth on /var | Hard |  Google | Free |
| Detect Memory Leak by Monitoring RSS | Medium | Google | Free |
| Fix Inode Exhaustion Issue | Medium |  DeutscheBank | Free |
| Fix HTTPS Certificate Error | Medium |  GitHub | Free |
| Real-Time Log Timestamping | Medium | Adobe | Free |
| Manage Service Failure Recovery | Hard |  Apple | Free |
| Nginx Rate Limit Calculation | Hard |  Cloudflare | Free |
| Update Cloud Configs | Medium |  Stripe | Free |
| Automated Archive and Retention | Hard |  Microsoft | Free |
| Trace Process Service Ownership | Hard |  NVIDIA | Free |
| Handling Large Log Archives | Easy | Amazon | Free |
| Upload-Safe File Partitioning | Medium |  GoDaddy | Free |
| Fix Port Exhaustion for High-Speed Scraper | Medium |  X | Free |
| Validating Network Routes | Medium | Google | Free |
| Validating DNS Consistency | Easy |  SAP | Free |
| Network Packet Loss Diagnosis | Easy | Cloudflare | Free |
| Network Port Service Cleanup | Easy | Apple | Free |
| Temporary Route Configuration | Easy |  Spotify | Free |
| Inspecting HTTP Traffic Flow | Medium |  Airbnb | Free |
| Network Socket Usage Analysis | Easy | SAP | Free |
| Forward Traffic Between Ports | Medium |  Meta | Free |
| Crashing Misconfigured Pod | Medium |  Reddit | Free |
| Image Pull BackOff and Secrets | Medium | Datadog | Free |
| CronJob Schedule Misconfiguration | Medium | RedHat | Free |
| Traffic Splitting with Native Kubernetes | Medium | Adobe | Free |
| ConfigMap Reload with Sidecar | Medium |  Yelp | Free |
| Implement StatefulSet with Stable DNS | Medium |  Okta | Free |
| StorageClass and PVC Expansion | Medium | Datadog | Free |
| OOMKilled Pod Analysis & Fix | Medium | Accenture | Free |
| Secure Internal Service Communication | Medium |  Dropbox | Free |
| CRD Schema Validation | Hard |  Slack | Free |
| Dynamic Volume Expansion | Easy | EPAM | Free |
| Custom Resource Definition Setup | Medium |  ActivisionBlizzard | Free |
| Create Namespace | Easy | Accenture | Free |
| Pod with Readiness Probe | Easy |  Zscaler | Free |
| Pod Viewer Access | Easy | Reddit | Free |
| Insecure Container with Root User | Medium | Accenture | Free |
| Macvlan Network Configuration Fix | Hard |  Uber | Free |
| Container CPU Limit Configuration | Easy |  IBM | Free |
| Memory Limit and OOM Killer | Medium |  DeliveryHero | Free |
| Graceful Shutdown with SIGTERM Handling | Medium |  Robinhood | Free |
| Log Rotation Size Limit Configuration | Easy | DeliveryHero | Free |
| Docker Multi-Architecture Image | Easy | Accenture | Free |
| Docker Binary Architecture | Easy | Adobe | Free |
| Docker Storage Driver Performance | Medium | GitHub | Free |
| Docker Volume Cross-Platform Consistency | Easy |  GitLab | Free |
| Optimize Dockerfile | Medium |  Shopify | Free |
| Rebase Feature Branch onto Correct Base | Easy |  Samsung | Free |
| Restore File to Previous Version | Medium | Slack | Free |
| Convert Remote from HTTPS to SSH | Easy | EPAM | Free |
| Rebase Feature Branch | Easy | GitHub | Free |
| Stash Work, Fix Bug, Restore and Update | Medium | IBM | Free |
| Remove Last Commit and Discard Changes | Easy | GitLab | Free |
| Shallow Clone Limited to Latest Commit | Easy |  Elastic | Free |
| Checkout Single File from Another Branch | Easy |  Twilio | Free |
| Remove File from Entire Git History | Medium |  Netflix | Free |
| Merge Repositories Preserving Both Histories | Medium | Zscaler | Free |
| Fix Repository with Unrelated Histories | Medium | Zscaler | Free |
| Stage Only Specific Files | Easy |  CrowdStrike | Free |
| Undo Commits but Keep Changes | Easy | CrowdStrike | Free |
| Cherry-Pick Specific Commit | Easy |  Ubisoft | Free |
| Recover Lost Commits from Detached HEAD | Medium | Kayak | Free |
| Docker Image Tagging with Commit SHA | Medium | Microsoft | Free |
| Matrix Build Strategy | Medium | Spotify | Free |
| Multi-Job Workflow with Artifact Handoff | Medium |  Anthropic | Free |
| Path-Based Workflow Execution | Medium | Coinbase | Free |
| Automated Rollback on Deployment Failure with Values File Restoration | Medium | NVIDIA | Free |
| Two Sum | Easy | Cloudflare | Free |
| Valid Palindrome | Easy |  Capital One | Free |
| Best Time to Buy and Sell Stock | Easy | Palantir | Free |
| Valid Parentheses | Easy |  Splunk | Free |
| Binary Search | Easy |  Intel | Free |
| Group Anagrams | Medium | Netflix | Free |
| Top K Frequent Elements | Medium | Cloudflare | Free |
| Product of Array Except Self | Medium | Samsung | Free |
| Valid Sudoku | Medium |  AMD | Free |
| Longest Consecutive Sequence | Medium | Meta | Free |
| Two Sum II - Input Array Is Sorted | Medium |  Databricks | Free |
| Container With Most Water | Medium | Amazon | Free |
| Search a 2D Matrix | Medium | SAP | Free |
| Contains Duplicate | Easy | Apple | Free |
| Valid Anagram | Easy | Anthropic | Free |