Q1. What are microservices compared with a monolith?
A microservice architecture structures an application as a set of small, independently deployable services, each built around a business capability, owning its own data s...
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Q2. How does dependency injection work in Angular?
Dependency injection supplies instances to classes instead of letting them construct collaborators. Providers are registered at the root (providedIn: 'root'), on a route,...
Q3. Explain IAM roles and service accounts in GCP.
GCP IAM binds principals to roles on resources. A service account is a special identity for workloads rather than humans. - Principals: users, groups, service accounts, d...
Q4. Tell me about a time you turned a dissatisfied customer into a loyal one.
A customer once received a delayed order that missed a critical deadline and was understandably furious. I called rather than emailed, apologised clearly and took ownersh...
Q5. How does systemd manage services?
systemd is the init system on most modern distributions. It starts services and manages dependencies, logging, and lifecycle. - Units describe resources: .service, .socke...
Q6. How do you design a CI/CD pipeline for a microservices application?
Optimise for independent, fast, and safe delivery per service. - Per-service pipelines: each repository builds, tests, and deploys its own service, avoiding a monolith pi...
Q7. How does Kubernetes service discovery work?
Kubernetes gives stable access to moving Pods through Services and DNS. - A Service selects Pods by label and gets a stable virtual IP, the ClusterIP, and a DNS name. - k...
Q8. What is service discovery and why is it needed?
In a dynamic environment, service instances start, stop and move, so callers cannot rely on fixed hostnames. Service discovery maintains a registry of healthy instances a...
Q9. What is the difference between a Service and an Ingress?
A Service exposes a set of Pods at the transport layer; an Ingress exposes HTTP and HTTPS routes into the cluster at the application layer. - Service: stable virtual IP a...
Q10. When would you use Azure Functions versus App Service?
Both can host code, but they optimise for different workloads. Azure Functions is serverless and event-driven: - Consumption or Premium plans scale to zero and bill per e...