Cisco Engineering interview questions

Three of the questions

1. Walk me through how you'd design a React + Ruby on Rails feature for managing wireless controllers and Access Points, where the backend needs to reflect real-time telemetry from thousands of deployed networks. How would you keep the UI from getting overwhelmed by that volume of live data?
   Technical depth · from the posting: “We use real-time telemetry from thousands of deployed networks spanning the globe to continuously improve the performance and stability of our products.sed to manage the wireless networks.Expertise on React JS and Ruby.Expertise in Cypress.Wireless Domain knowledge.Your Impact Design, develop, validate, and automate scalable features that simplify network management for customers.Strong React.js UI development experience, building modern, responsive, and scalable web applications.Collaborate with Product Management, TMEs, and cross-functional engineering teams to deliver impactful solutions.Deliver features on time with a strong focus on quality, reliability, and customer value.Experience with containerization, DevOps practices, Kubernetes, and cloud deployments.Experience in system design, code quality, and mentoring/guiding engineers on engineering best practices.Exposure to LLMs and AI-assisted development, with a proven ability to deliver high-quality, customer-focused software.Preferred: Exposure to or understanding of networking concepts and technologies”
2. Customers start reporting that wireless controllers managed via the Cisco Wireless cloud dashboard are showing stale device status - the UI says access points are offline but they're actually fine. You're the engineer on this React/Ruby feature. How do you debug this?
   Scenarios & troubleshooting · from the posting: “real-time telemetry from thousands of deployed networks spanning the globe to continuously improve the performance and stability of our products”
3. This team uses real-time telemetry from thousands of deployed networks to continuously improve products. Walk me through a time when you used production data or customer feedback to identify and fix a problem—what did you learn that changed how you build?
   Behavioural · from the posting: “use real-time telemetry from thousands of deployed networks spanning the globe to continuously improve the performance and stability of our products”