A circuit breaker opened after repeated failures. You want to test if the dependency recovered without flooding it. Which state is designed for that?

A team's average lead time is 20 days: 8 days waiting in backlog, 3 days development, 2 days code review, 5 days testing, 2 days deployment approval. Which intervention would MOST reduce lead time?

Which artifact typically belongs to LLD?

A downstream API sometimes takes 12 seconds. Without protection, your service threads block and overall throughput collapses. What is the best approach to overcome this?

The primary goal of DevOps is to:

A team wants to reduce cost by ensuring resources run only when required. Which combination matches the deck’s cost-optimization principles?

In the “Food Delivery App” example, which component helps detect issues proactively?

Discovering security gaps late in release cycles indicates weak:

What is the biggest risk of postponing refactoring in critical financial systems?

GitOps is best described as: