Questions
All Interview Questions
Real interview questions with expert answers, plain-English explanations, and practical examples. (202 questions)
ServiceNow
Full Stack Developer
Authentication & Authorization
When building a new full-stack web application, how would you choose between different authentication and authorization strategies, and what are the key considerations?
Deloitte
Network Engineer
Networking
Explain the differences between layer 4 and layer 7 load balancing, and when would a network engineer choose each?
Deloitte
Network Engineer
Security
Explain the differences between an IDS and an IPS, and how would a network engineer deploy and configure both to enhance enterprise network security?
Zomato
Data Engineer
Performance Optimization
Explain data skew in large-scale data processing, and how would a data engineer identify and mitigate it for optimal performance?
Netflix
Backend Developer
API Design
How does Netflix design its APIs for high scalability and resilience in a microservices architecture?
PayPal
DevOps Engineer
Monitoring
Explain the differences between metrics, logs, and traces, and how they contribute to observability in a distributed system?
Amazon
Backend Developer
System Design
How would you design a distributed ride-sharing service like Uber or Lyft?
ServiceNow
Backend Developer
Concurrency
Beyond Mutexes: How do semaphores differ from mutexes, and when would a backend developer choose one over the other for resource management?
ServiceNow
SRE
Containers & Kubernetes
How does the Container Network Interface (CNI) work in Kubernetes, and what are its key components?
Microsoft
Security Engineer
Firewalls & Network Security