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15. Port Conflict Resolution
Datadog 👶 Easy Linux
Beginner Mode

Start your terminal to use beginner mode.

Scenario

An application /home/interview/server.sh fails to start.

Task

Find the cause of failure and resolve it so the server can start successfully.

Terminal requires a larger screen

Open this page on a desktop or tablet (≥ 768px) to launch the terminal and practice hands-on.

Linux Terminal Environment

Write and execute your solution in the terminal below.

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Essential

Linux 0/29
AWS 0/10
Kubernetes 0/15
CI/CD 0/5
Networking 0/9
Question Difficulty Company Access
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
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