Network Programming and Scripting Proficiency Questions

Show practical programming and automation skills focused on networking tasks, using languages such as Python, Go, or shell scripting. Topics include socket programming and protocol knowledge for TCP and UDP, HTTP and higher level APIs, automation of network devices and cloud platform APIs, use of client libraries and remote management protocols, writing maintainable scripts and tools with error handling and retries, testing and validation of network code, performance and scaling considerations for scripts and agents, debugging and logging strategies, and code review and collaboration practices for operational tooling. Candidates should be able to discuss examples of network automation, tooling, monitoring integrations, and how they handled reliability and performance trade offs.

EasyTechnical

0 practiced

Compare TCP and UDP in terms of delivery guarantees, ordering, connection and resource costs, and head-of-line blocking. For an SRE building a metrics ingestion pipeline (agent → collector), explain when you'd choose UDP vs TCP/HTTP/gRPC and what trade-offs you accept (loss tolerance, latency, operational complexity, retry policies).

MediumTechnical

0 practiced

Explain the differences between select(), poll(), and epoll() on Linux. For a high-throughput TCP server in Python, describe when you'd choose an epoll-based event loop (asyncio) over a thread-per-connection model, and outline pitfalls to avoid with edge-triggered epoll.

MediumTechnical

0 practiced

Design a Python script to automate updating firewall rules across cloud VMs (AWS security groups or GCP firewall). Describe authentication, rate-limit handling, idempotency, detection of partial failure, rollback strategy, and how you'd safely run such automation in production.

HardTechnical

0 practiced

Design an observability-driven canary rollout plan for a network automation feature that adjusts route preferences. Define the metrics and baselines you'll monitor (control vs canary), thresholds and automated decision rules to promote or rollback, and what instrumentation to add to quickly pinpoint root cause if the canary fails.

MediumTechnical

0 practiced

Create a code-review checklist specifically for network automation scripts and small operational agents. Cover security (secrets, permissions), error handling, retries, idempotency, resource constraints, testing, logging, and documentation. Explain why each checklist item is important for SRE reliability.

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