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1.
Define load balancing in the context of modern web services.
Answer:
Load Balancing Fundamentals
- 2.
What are the primary objectives of implementing load balancing?
Answer: - 3.
Explain the difference between hardware and software load balancers.
Answer: - 4.
Can you list some common load balancing algorithms and briefly describe how they work?
Answer: - 5.
Describe the term “sticky session” in load balancing.
Answer: - 6.
How does load balancing improve application reliability?
Answer: - 7.
How do load balancers perform health checks on backend servers?
Answer: - 8.
What are the advantages and disadvantages of round-robin load balancing?
Answer: - 9.
In load balancing, what is the significance of the least connections method?
Answer: - 10.
Explain how a load balancer might handle failure in one of the servers it manages.
Answer:
Load Balancing Strategies
- 11.
How does a load balancer distribute traffic in a stateless vs stateful scenario?
Answer: - 12.
What is the concept of session persistence, and why is it important?
Answer: - 13.
Discuss the role of DNS in load balancing.
Answer: - 14.
In what scenarios would you use weighted load balancing?
Answer: - 15.
How can load balancers help mitigate DDoS attacks?
Answer: - 16.
Explain the difference between horizontal and vertical scaling, and how load balancing applies to each.
Answer: - 17.
What factors should you consider when choosing a load balancing method for a particular application?
Answer: - 18.
Discuss how global server load balancing differs from local server load balancing.
Answer:
Load Balancer Configuration & Performance
- 19.
What metrics would you monitor to assess the performance of a load balancer?
Answer: - 20.
Describe one method to handle SSL/TLS traffic in load balancing.
Answer: - 21.
Explain the concept of direct server return and its significance in load balancing.
Answer: - 22.
How can caching be integrated with load balancing to improve performance?
Answer: - 23.
Discuss the challenges of load balancing microservice architectures.
Answer: - 24.
How do you configure a health check on a load balancer?
Answer: - 25.
What is connection draining, and why is it used in load balancing?
Answer:
Load Balancing in Cloud and Hybrid Environments
- 26.
How do cloud provider load balancers (e.g., AWS ELB, Azure Load Balancer) differ from on-premise solutions?
Answer: - 27.
Can you explain the role of load balancing in auto-scaling groups/clusters?
Answer: - 28.
Describe the process of load balancing in a multi-cloud environment.
Answer: - 29.
Discuss how load balancing might work in a hybrid cloud scenario with both private and public resources.
Answer:
Advanced Load Balancing Topics
- 30.
What is cross-region load balancing, and in what scenario would it be necessary?
Answer: - 31.
Explain how a load balancer can make routing decisions based on content type.
Answer: - 32.
How would you enable graceful shutdown of servers in a load-balanced environment?
Answer: - 33.
Discuss the role of API gateways in conjunction with load balancers.
Answer: - 34.
What is load balancer affinity, and when might you enforce it?
Answer: - 35.
How does load balancing work in a containerized environment, such as with Docker and Kubernetes?
Answer: - 36.
What is a reverse proxy, and how does it relate to load balancing?
Answer: - 37.
Can you explain how load balancing works with websockets or other persistent connection protocols?
Answer: - 38.
Discuss how machine learning can be applied to improve load balancing decisions.
Answer: - 39.
What strategies might you employ to handle sudden spikes in traffic using load balancing?
Answer:
Load Balancing and Security
- 40.
How do load balancers contribute to a system’s security posture?
Answer: - 41.
Can load balancers protect against SQL injection or XSS attacks? If so, how?
Answer: - 42.
How does a Web Application Firewall (WAF) integrate with load balancing solutions?
Answer: - 43.
Describe the importance of properly configuring HTTPS certificates on load balancers.
Answer: - 44.
Discuss the security implications of SSL termination at the load balancer.
Answer: - 45.
Explain how rate limiting works in the context of load balancing.
Answer:
Load Balancing Troubleshooting and Problem Solving
- 46.
How would you troubleshoot a situation where a load balancer is incorrectly routing traffic?
Answer: - 47.
What steps would you take if a backend server is reported down by the load balancer but is actually running?
Answer: - 48.
Describe how you might identify and resolve performance bottlenecks in a load-balanced system.
Answer: - 49.
How would you handle a situation where the load balancer becomes the performance bottleneck?
Answer: - 50.
Suppose a load balancer is causing increased latency—what potential root causes would you investigate?
Answer:
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