Resilience And Fault Injection

Which THREE fields are found in the 'http' connectionPool configuration?

You want to limit the number of concurrent connections to the 'payment' service to 100. Where is this configuration set?

What happens if a request times out in Istio?

You want to configure your microservice to be more resilient. Which THREE of the following are valid fields within an 'outlierDetection' policy in a DestinationRule?

What is the default value for 'consecutive5xx' in OutlierDetection?

You need to limit the number of concurrent connections to the 'orders' service. Which field in the DestinationRule do you configure?

You are reviewing a VirtualService for the 'reviews' service. The service has a timeout of 5 seconds configured. You want to ensure that if a request takes longer than 5 seconds, it is aborted with a 504 Gateway Timeout. Which field in the VirtualService should you configure?

You need to limit the number of concurrent connections to the 'order-service' to prevent cascading failures. Which Istio resource should you configure?

How do you specify the percentage of traffic that should experience a fault?

Which TWO are common causes for a service to be ejected by Outlier Detection?

What is the consequence of having a timeout that is shorter than the average latency of the service?

Which of the following describes the difference between Circuit Breaking and Outlier Detection?

Which of the following is a valid method for performing fault injection?

You want to ensure that a request to the 'search' service fails fast if it takes longer than 2 seconds. How is this configured?

What is the recommended way to test fault injection in a production environment?

You want to ensure that a pod is only ejected if it fails consistently. Which setting is most appropriate?

To test how your application handles service unavailability, you want to return an HTTP 503 error for 20% of requests to the 'catalog' service. Which fault injection setting do you use?

What is the primary purpose of adding a timeout to a service call?

A service is returning 5xx errors frequently. You want to eject instances that return 5 consecutive 5xx errors. Which OutlierDetection setting is required?

Which field defines how long an ejected pod remains out of the rotation?

A platform team is implementing a resilience strategy for the 'checkout' service. They want to configure a DestinationRule that ejects unhealthy hosts, and they also want to ensure that the ejection does not remove too many hosts at once. Which TWO settings in the OutlierDetection configuration directly control how many hosts can be ejected and how long they remain ejected? (Choose two.)

Which THREE things happen when a request fails and a retry policy is active?

A cluster administrator wants to limit the number of concurrent connections and pending requests that the sidecar will allow to the 'shipping' service. The team also wants to configure a circuit breaker that trips when the number of pending requests exceeds a threshold. Where should these settings be defined?

An application is experiencing intermittent errors. You decide to use outlier detection to eject unhealthy pods. Which field in the DestinationRule controls the ejection of hosts after a certain number of 5xx errors?

You need to ensure that a request to the 'orders' service times out if it takes longer than 2 seconds. Which field in the VirtualService should you configure?

You have a DestinationRule with outlier detection enabled. If a host returns 5 consecutive 5xx errors and the 'interval' is set to 1s, what happens if 'baseEjectionTime' is 30s?

How do you define a circuit breaker that limits the number of pending requests?

Which THREE settings are part of the 'outlierDetection' configuration in a DestinationRule?

Which TWO parameters affect the 'aggressiveness' of Outlier Detection?

Which TWO of the following are valid fields within a DestinationRule's 'trafficPolicy'?

You notice that a pod is being ejected by Outlier Detection despite only having occasional errors. How do you increase the interval between ejection scans?

Which resource is used to configure circuit breaking for a service?

What happens when a circuit breaker trips?

Which component is responsible for the actual enforcement of circuit breaking and fault injection?

Where do you define the connection pool settings for a service?

In OutlierDetection, what is the effect of setting 'maxEjectionPercent' to 0?

When configuring circuit breaking, what does 'maxRequestsPerConnection' control?

Can you configure fault injection for specific traffic patterns, such as user headers?

Which TWO of the following are valid fault injection types in Istio?

Which THREE settings are part of the 'connectionPool' configuration in a DestinationRule?

To test the resilience of your microservice architecture, you want to introduce a 5-second delay to 50% of the requests directed to the 'catalog-service'. Where do you define this configuration?

You configure a VirtualService for the 'payments' service with an HTTP route that applies a retry policy of 3 attempts with a 2s perTryTimeout, and a global timeout of 5s. During peak load, callers report that requests fail after roughly 5 seconds even though some retries were still in flight. Which behavior of the global timeout explains this?