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Getting started with Microservices with Istio and IBM Cloud Kubernetes Service cognitive class Exam Answers:-

Course Name :- Getting started with Microservices with Istio and IBM Cloud Kubernetes Service

Twelve factors app:-

Question 1 : The 12-factor app methodology minimizes divergence among development and production, enabling continuous deployment for maximum agility.

  • True
  • False

Question 2 : Disposability refers to which of these concepts?

  • An app runs as one or more stateless processes that share nothing and assumes process memory is transient.
  • Apps are built in distinct stages (build, release, run).
  • Processes start fast and shut down gracefully, which means that processors should start almost instantaneously.
  • Developers treat logs as event streams: the outer/hosting environment deals with processing and routing log files.

Question 3 : According to the twelve-factor app methodology, where should you store configuration information?

  • In the environment
  • In the code
  • In the server where you deploy the code
  • In the properties files
  •  

Question 4 : When you are trying to build a scalable, distributed, cloud-ready app, you should run that app as one or more stateless processes.

  • True
  • False

Microservices :-

Question 1 : For a simple change, monolithic apps take a long time to get the updated app redeployed.

  • True
  • False

Question 2 : Select the three benefits of implementing a microservices architecture.

  • Different parts of a development team can manage individual parts of a microservice.
  • You’ll see less service interruption for fast-paced cloud computing.
  • A suite of services can be deployed and upgraded without a rebuild of other functioning services.
  • If one component fails, it will all fail.

Question 3 : Which principle is exemplified by this statement? “Microservices are an app architectural style that divides an app into components where each component is a full but miniature app that’s focused on producing a single business task.”

  • The Single Business Task principle
  • The Single Responsibility principle
  • The Multiple Component principle
  • The Microservices principle

Question4 : Agile development methods helped make microservice design and implementation possible.

  • True
  • False

Application Architecture evolution:-

Question 1 : The SOA stack had to string together sequences of services as business processes that were themselves macroservices.

  • True
  • False

Question 2 : A microservice app must have a well-defined interface and well-defined dependencies.

  • True
  • False

Question 3 : What problems do you typically encounter when you develop monolithic apps? Select all that apply.

  • No one person can maintain a vertical slice of an app.
  • Developer challenges are with DevOps, management views, and controls.
  • Developers spend a lot of time in meetings deciding how the layers of code should work together.
  • A change in one layer usually broke the layers above it.

Question 4 : You can use IBM Cloud Kubernetes Service to repackage monolithic apps into containers.

  • True
  • False

MicroservicesComponent Architecture:-

Question 1 : The number of business services that you implement for an app depends on what types of clients the app supports and how specialized those clients require their dispatchers to be.

  • True
  • False

Question 2 : In this course, BFF refers to which concept?

  • Best friend forever
  • Back for front
  • Backend for frontend
  • Backend first failure

Question 3 : You should separate the database access layer into its own service.

  • True
  • False

Question 4 : It’s more efficient and effective to have one team write all or multiple dispatchers while someone else implements the client apps.

  • True
  • False

Microservice integration :-

Question 1 : You should not mix and match synchronous and asynchronous communication.

  • True
  • False

Question 2 : By using asynchronous communication, you can make microservices more robust. Which of these actions is not used in asynchronous communication?

  • A different requester instance can handle the response.
  • The requester, provider, and messages must keep working through the lifetime of the invocation.
  • The messaging system holds the action and result.
  • The requester doesn’t need to block while the provider runs.

Question 3 : Which of these methods help with complete decoupling of microservice intercommunication?

  • Service registry or service discovery
  • Load balancing
  • Circuit breaker patterns
  • All of these

Question 4 : The public VLAN determines the public IP address that is assigned to a worker node during cluster creation.

  • True
  • False

Service mash :-

Question 1 : In monolithic apps, the location of resources are well known, relatively static, and found in configuration files or hard coded.

  • True
  • False

Question 2 : A service registry is used to keep track of the code and health of services.

  • True
  • False

Question 3: Which of the following common functions are provided by service mesh implementation like Istio? Select all that apply.

  • Automated testing
  • Service registry
  • Service discovery
  • Service proxy

Question 4 : Client-side discovery uses a load balancer to query the service registry and direct a request to the appropriate service instance.

  • True
  • False

Istio:An Intelligent Service Mesh for microservices

Question 1 : You add Istio support to services by deploying a special sidecar proxy throughout your environment that intercepts all logs among microservices.

  • True
  • False

Question 2 : Which source projects were the basis for Istio?

  • IBM’s Amalgam8 project
  • Google’s Service Control
  • Lyft’s Envoy proxy
  • All of these

Question 3 : Istio is an open platform service mesh implementation for connecting, managing, and securing microservices.

  • True
  • False

Question 4: Select the three benefits of implementing a microservices architecture.

  • Different parts of a development team can manage individual parts of a microservice.
  • You’ll see less service interruption for fast-paced cloud computing.
  • A suite of services can be deployed and upgraded without a rebuild of other functioning services.
  • If one component fails, everything fails.

Getting started with Microservices with Istio and IBM Cloud Kubernetes Service cognitive class final exam Answers:-

Question 1 : Which component is responsible for collecting telemetry data from the Envoy proxy and other services?

  • Citadel
  • Kubernetes container
  • Mixer
  • Pilot

Question 2 : What is the core Istio component that is used for traffic management and configuration of all Envoy instances deployed in an Istio service mesh?

  • Mixer
  • Citadel
  • Pilot
  • None of these

Question 3 : Which of these twelve-factor app methodologies ties into agile software delivery, continuous integration, and continuous deployment concepts, and minimizing incompatibility?

  • Admin processes
  • Dependencies
  • Development and production parity
  • Build, release, run

Question 4 : Which of these principles when they’re applied to developing microservices can make developers more efficient? Select all that apply.

  • Creating well-defined interfaces that are independently deployed
  • Managing one large app that does everything
  • Operating in small teams with each team owning the entire lifecycle of the service
  • Reducing an app into single-function modules

Question 5 : You can’t roll back a microservice deployment to a specified version within IBM Cloud Kubernetes Service.

  • True
  • False

Question 6 : 12-factor apps should be scaled up via vertical scaling.

  • True
  • False

Question 7 : The aim of a microservice architecture is to completely link app components to one another so that they can be maintained, scaled, and more.

  • True
  • False

Question 8 : What are the two key tenets of a microservice architecture?

  • Services are optimized for multiple functions.
  • Communication is done through REST API and message brokers.
  • Continuous integration and continuous deployment (CI/CD) are defined per service.
  • Business functions are packaged as a single monolith app.

Question 9: Microservices scale and fail interdependently.

  • True
  • False

Question 10 : Which functions enable each service to find and connect with the other services it needs to do its work?

  • Sidecar
  • Service discovery
  • Service registry
  • Circuit breaker

Question 11: The Istio service mesh is logically split into which two parts?

  • Control plane
  • Network plane
  • Data plane
  • Infrastructure plane

Question 12 : The data plane is composed of a set of intelligent proxies deployed as sidecars that mediate and control all security among microservices.

  • True
  • False

Question 13 : The control plane manages and configures proxies to route traffic and to enforce policies at runtime

  • True
  • False

Question 14 : What are the main features of Citadel?

  • Service-to-service and end-user authentication using mutual TLS
  • Identity management
  • Logging management
  • Credential management

Question 15 : Istio authentication includes key management.

  • True
  • False

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