# Popular Questions

- How Can I Obtain the IP Address of a Client?
- How Do I Troubleshoot an Unhealthy Backend Server?
- How Does ELB Perform UDP Health Checks? What Are the Precautions for UDP Health Checks?
- What Types of Sticky Sessions Does ELB Support?
- How Can I Use WebSocket?
- How Do I Check If Sticky Sessions Fail to Take Effect?
- What Are the Relationships Between Load Balancing Algorithms and Sticky Session Types?
- How Does ELB Distribute Traffic?

Parent topic: FAQs