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Beyond the Basics: Istio and IBM Cloud Kubernetes Service cognitive exam Answers:-

Course Name :- Beyond the Basics: Istio and IBM Cloud Kubernetes Service.

Lab 1:- Observe Service telemetry.

Question 1 : You must modify your apps to get metrics for those apps.

  • True
  • False

Question 2: You must modify your apps to get distributed tracing for those apps to work properly.

  • True
  • False

Question 3 : What distributed tracing system does Istio support by default?

  • Zipkin
  • Kibana
  • LogStash
  • Jaeger

Question 4 : In a SOA architecture that uses tradtional debugging techniques, as requests pass through multiple services, identifying performance bottlenecks becomes increasingly difficult.

  • True
  • False

Lab 2 :- Expose the service mesh with istio ingress controller

Question 1: The components deployed on the service mesh by default are not exposed outside the cluster.

  • True
  • False

Question 2: In a Kubernetes environment, Istio uses what component to configure ingress behavior?

  • Microservices Ingress controller
  • Kubernetes Ingress Resources
  • Cloud Ingress Resources
  • Resource controller

Question 3: Ingress can provide load balancing, SSL termination, and name-based virtual hosting.

  • True
  • False

Question 4: What is an ingress?

  • A collection of services
  • A collection of pods
  • A collection of rules
  • A collection of clusters

Lab 3:- manage traffic

Question 1: Where are routing rules defined?

  • VirtualService
  • VirtualRule
  • DestinationRule
  • ServiceEntry

Question 2: Where are service versions (subsets) defined?

  • VirtualService
  • DestinationRule
  • ServiceEntry
  • DestinationService

Question 3: Which Istio component is responsible for sending traffic management configurations to Istio sidecars?

  • Mixer
  • Citadel
  • Pilot
  • Kubernetes

Question 4: A ServiceEntry rule describes which of the following three items?

  • Ports
  • Traffic policies
  • Endpoints
  • Protocols

Lab 4 :- Secure your service

Question 1: Citadel provides each microservice with a strong, cryptographic identity in the form of a certificate. The certificate’s lifecycle is fully managed by Istio.

  • True
  • False

Question 2: Istio provides microservices with mutually authenticated connections without requiring app code changes.

  • True
  • False

Question 3 : Mutual authentication must be on or off for the entire cluster; gradual adoption is not possible.

  • True
  • False

Question 4 : Citadel is not directly responsible for which one of these items?

  • Provides each service with an identity representing its role
  • Provides connections to exchange and validate certificates
  • Provides a common trust root to allow Envoys to validate and authenticate each other
  • Provides a key management system, automating generation, distribution, and rotation of certificates and keys

Lab 5 :- Enforce policies for microservices

Question 1: Creating Mixer rules requires app code changes.

  • True
  • False

Question 2: What is the name of the custom code that interacts with the back-end system, such as Prometheus?

  • Rule
  • Instance
  • Adapter
  • Service

Question 3: Istio Mixer moves policy decisions under operator control rather than into configuration.

  • True
  • False

Question 4: Mixer is not responsible for interfacing with the back-end systems.

  • True
  • False

Beyond the Basics : Istio and IBM Cloud Kubernetes Service final exam Answers:-

Question 1 : What is a service mesh?

  • One or more containers
  • A group of nodes
  • A network of microservices
  • A type of authentication system

Question 2: Which of these features is provided by Istio? Select all the apply.

  • Traffic management
  • Telemetry
  • Policy enforcement
  • Machine learning
  • Mutual TLS
  • App monetization

Question3: Microservices that are deployed in Istio can communicate to services outside of Istio.

  • True
  • False

Question 4: Which Istio function normally requires users to modify their applications?

  • Traffic management
  • Metrics
  • Distributed tracing
  • Policy enforcement

Question 5: Which Istio component is always required even when you install only certain Istio features?

  • Mixer
  • Pilot
  • Citadel
  • Istioctl

Question 6: Which Istio component is part of the Istio service mesh data plane?

  • Mixer
  • Pilot
  • Citadel
  • Envoy sidecar

Question 7: Which Istio features allow you to configure per namespace?

  • Policy enforcement
  • Traffic management
  • Authentication policy
  • Telemetry

Question 8: To use Istio, a service must run in Kubernetes.

  • True
  • False

Question 9 : What’s the purpose of a sidecar container in Kubernetes?

  • It’s a container with Istio installed.
  • It’s utility container in a pod.
  • It helps to speed up the cluster run time.
  • None of these

Question10 : What Istio component primarily manages telemetry?

  • Pilot
  • Istio Citadel
  • Mixer
  • Istio data plane

Question 11: What is an Envoy?

  • A web server
  • A sidecar proxy
  • A pod
  • None of these

Question 12 : What component is primarily responsible for traffic management?

  • Pilot
  • Mixer
  • Istio Citadel
  • Security

Question 13: A VirtualService defines policies that apply to traffic intended for a service after routing has occurred.

  • True
  • False

Question 14: ServiceEntry configuration enables services within the mesh to access a service not necessarily managed by Istio.

  • True
  • False

Question 15: A/B testing is a method of performing identical tests against two separate service versions to determine which performs better.

  • True
  • False

Question 16 : Telemetry in Istio can help you to pinpoint latency problems in microservices.

  • True
  • False

Question 17 : what is the default sidecar proxy in istio?
• NGINX
Envoy
• HAProxy
• Pilot
Question 18 : With what Istio component can you use to write custom adapters for tracing and metrics?

  • Citadel
  • Mixer
  • Pilot
  • Envoy
  • Correct

Question 19 : Istio can secure the communication between microservices without requiring app code changes.

  • True
  • False

Question 20 : In this course, what is an ingress?

  • A collection of services
  • A collection of rules that allow inbound connections to reach the cluster services
  • A pathway to bypass disabled services
  • None of these

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