IBM Cloud Technical Advocate - Intro to Containers/Kubernetes/ROKS Study Jam MC

7. Which of the following are operators available in OperatorHub?​ (Select all that apply.) (Intro Containers/Kubernetes/ROKS Module 4) A. Red Hat​ B. Certified​ C. Community ​D. Custom controller

A, B, & C

9. OpenShift can be run in which of the following environments?​ (Intro Containers/Kubernetes/ROKS Module 4) A. Public cloud​ B. Private cloud​ C. On premise​ D. Hybrid cloud​

A, B, C, & D

3. Which of these describes a container image? (Intro Containers/Kubernetes/ROKS Module 1) A. A read-only file that holds code, libraries, and dependencies that are required by an application to run​. B. A read-write docker file specifying all properties of a container​. C. A running process on the host operating system specifying the container's key value configuration​. D. A read-only file that includes commands and instructions to run a container​s.

A. A read-only file that holds code, libraries, and dependencies that are required by an application to run

3. Replicating a Pod serves to scale an application in which of the following ways? (Intro Containers/Kubernetes/ROKS Module 2) A. Horizontally B. Vertically C. Upward D. Downward

A. Horizontally

10. Which of the following is immutable?​​ (Intro Containers/Kubernetes/ROKS Module 1) A. Image​ B. Container ​C .Docker​ D. Node​

A. Image​

10. What is the upstream version of OpenShift called?​ (Intro Containers/Kubernetes/ROKS Module 4) A. OKD​ B. Kubernetes open source​ C. CRD ​D. Red Hat Enterprise Linux CoreOS

A. OKD

5. Which of the following most accurately describes the relationship between Red Hat OpenShift and Kubernetes? (Intro Containers/Kubernetes/ROKS Module 4) A. OpenShift packages Kubernetes with additional tooling to make developers and administrators more successful.​ B. OpenShift is a tool in the Kubernetes ecosystem that can be used in conjunction with Kubernetes to deploy cloud-native apps.​ C. OpenShift can be deployed on a Kubernetes cluster to provide additional tooling such as logging, monitoring, and CI/CD.​ D. OpenShift plugs into Kubernetes through custom resource definitions to provide build and other capabilities.

A. OpenShift packages Kubernetes with additional tooling to make developers and administrators more successful.​

4. What happens if worker nodes are under-utilized? (Intro Containers/Kubernetes/ROKS Module 3) A. The cluster Autoscaler scales down worker nodes one at a time​. B. The cluster Autoscaler adds pods to the worker nodes until they are full​. C. The cluster Autoscalerterminates pods that aren't currently servicing requests​. D. The cluster Autoscaler waits until this situation is detected again before acting​.

A. The cluster Autoscaler scales down worker nodes one at a time​.

1. Resizing a VM to add additional capacity is which of the following? (Intro Containers/Kubernetes/ROKS Module 2) A. Vertical scaling B. Horizontal scaling C. Hardware virtualization D. System rationalization

A. Vertical scaling

9. ConfigMaps and Secrets are ___________ used by applications that scale to demand.​ (Intro Containers/Kubernetes/ROKS Module 3) A. standards ​B. rules​ C. platforms​ D. commands

A. standards

9. Which of these commands lists all the deployments in the kube-system namespace?​ (Intro Containers/Kubernetes/ROKS Module 2) A. "apply"​ B. "get"​ C. "describe"​ D. "create"

B. "get"​

4. Why are containers so lightweight, compared to virtual machines? (Intro Containers/Kubernetes/ROKS Module 1) A. Containers do not need Kubernetes​. B. Containers mean guest OS is not required​. C. Containers do not require user applications​. D. Containers mean application libraries are not required​.​

B. Containers mean guest OS is not required​.

8. An important difference between containers and virtual machines is:​​ (Intro Containers/Kubernetes/ROKS Module 1) A. Containers virtualize hardware and VMs virtualize the operating system.​ B. Containers virtualize the operating system and VMs virtualize the hardware. ​C. Containers virtualize the operating system and VMs virtualize the registry. ​D. VMs virtualize the hardware and Containers virtualize the registry.

B. Containers virtualize the operating system and VMs virtualize the hardware.

8. What does "create" do in this command?​ kubectl create -f nginx.yamlplane? (Intro Containers/Kubernetes/ROKS Module 2) A. It creates a YAML file named nginx.yaml B. It creates an object using the details in the nginx.yaml file C. It creates a new cluster using the details in the inginx.yaml file​ D. It creates a configuration file for an nginxweb server

B. It creates an object using the details in the nginx.yaml file

7. Which of the following is a platform used for container orchestration? (Intro Containers/Kubernetes/ROKS Module 1) A. OpenStack​ B. Kubernetes​ C. Docker​ D. Ansible​

B. Kubernetes​

3. Red Hat OpenShift on IBM Cloud is which type of service? (Intro Containers/Kubernetes/ROKS Module 4) A. Operational​ B. Managed C. Closed D. Forbidden

B. Managed

3. What will occur in the Horizontal Pod Autoscaler if utilization is higher than specified? (Intro Containers/Kubernetes/ROKS Module 3) A. Additional resources will be added to the cluster. B. More pods will be created. C. More worker nodes will be created. D. The Autoscaler will tell the controller to limit requests until normal again.

B. More pods will be created.

2. Adding more VMs to a cluster to increase capacity is which of these? (Intro Containers/Kubernetes/ROKS Module 2) A. Scale up​ B. Scale out​ C. Replication ​ D. High availability

B. Scale out​

1. Which is an advantage of containers? (Intro Containers/Kubernetes/ROKS Module 1) A. They support configurations for Compute Intensive workloads​. B. They simplify portability between different platforms and clouds​. C. They take advantage of unused capacity in a cloud data center​. D. They are used for meeting compliance and regulatory requirements.​

B. They simplify portability between different platforms and clouds​.

9. What is a Dockerfile? (Intro Containers/Kubernetes/ROKS Module 1)​​ A. An immutable file that contains the source code, libraries, and dependencies necessary for an application to run.​ B. An open-source community that develops container technologies.​ C. A text file that contains all the commands a user would call on the command line to create the image.​ D. A container runtime, or software that executes containers.

C. A text file that contains all the commands a user would call on the command line to create the image.​

2. What is one of the reasons that containers are considered a better option than virtual machines? (Intro Containers/Kubernetes/ROKS Module 1) A. Containers have a version of software base, compute, and storage. B. Containers are a virtual software library where code is separated with libraries​. C. Containers weigh less and do not consume as many resources​. D. Containers have an operating system and are independent of one another​.

C. Containers weigh less and do not consume as many resources​.

6. Which of the following Kubernetes objects is used to store and manage sensitive information? (Intro Containers/Kubernetes/ROKS Module 3) A. Service bindings ​B. ConfigMaps C. Secrets​ D. ReplicaSets

C. Secrets​

6. Which of the following is a Red Hat OpenShift build trigger?​​ (Intro Containers/Kubernetes/ROKS Module 4) A. Source-to-Image​ B. Docker build​ C. Webhook ​D. Kube-build

C. Webhook

5. Which of the following components is part of the Kubernetes Control plane?​ (Intro Containers/Kubernetes/ROKS Module 2) A. The worker nodes ​B. The kubelet C. etcd D. The Kubernetes network proxy

C. etcd

10. Each node is made up of which of the following pairs?​ (Intro Containers/Kubernetes/ROKS Module 2) A. kube-controller manager and kube-proxy B. kube-proxy and kube-api-server​ C. kube-proxy and kubelet D. kubelet and etcd

C. kube-proxy and kubelet

4. Which of the following statements describes what Kubernetes is?​ (Intro Containers/Kubernetes/ROKS Module 2) A. Open source software ​B. Container orchestration platform​ C. A tool that facilitates declarative management​ D. All of the above

D. All of the above

2. In Kubernetes, which of the following is responsible for scaling out? (Intro Containers/Kubernetes/ROKS Module 3) A. DaemonSet B. Kube-scheduler C. Cloud controller manager D. Horizontal Pod Autoscaler

D. Horizontal Pod Autoscaler

7. Which Kubernetes object represents a single instance of processes running in a container?​ (Intro Containers/Kubernetes/ROKS Module 2) A. Cluster ​B. Deployment​ C. Kubelet​ D. Pod

D. Pod

4. Cloud native applications are small, ____________, loosely coupled services. (Intro Containers/Kubernetes/ROKS Module 4) A. symbiotic​ B. reliable​ C. interdependent​ D. independent

D. independent

5. What are the operating system primitives that enable virtualization in the Linux Kernel? (Intro Containers/Kubernetes/ROKS Module 1)​ A. syscalls and cgroups B. namespace and syscalls​ C. projects and cgroups D. namespace and cgroups

D. namespace and cgroups

1. True or False Red Hat OpenShift offers an integrated container registry by default as opposed to that of a Kubernetes cluster. (Intro Containers/Kubernetes/ROKS Module 4)

True

8. True or False. Image Streams can point to images in the Red Hat OpenShift internal registry. (Intro Containers/Kubernetes/ROKS Module 4)

True

In Kubernetes, each node is made up of what pairs? (Intro Containers/Kubernetes/ROKS Moduterm-19le 2)

kube-proxy and kubelet

5. The Horizontal Pod Autoscalermonitors which of the following? (Intro Containers/Kubernetes/ROKS Module 3) A. Worker node count ​B. CPU utilization​ C. Network latency​ D. Cluster efficiency

​B. CPU utilization​

2. The OperatorHubis included in which of the following consoles? (Intro Containers/Kubernetes/ROKS Module 4) A. Docker ​B. OpenShift C. IBM Console D. Kubernetes

​B. OpenShift

1. What occurs if the Cluster Autoscalerdetects pending pods? (Intro Containers/Kubernetes/ROKS Module 3) A. The Autoscalerdeploys additional clusters ​B. The Autoscalerscales up more worker nodes​ C. The Autoscalershuts down the oldest pod to make room for the pending pod ​D. The Autoscaler adds additional resources to existing pods to handle the workload​.

​B. The Autoscalerscales up more worker nodes​

8. ReplicaSets enable us to scale our application by running duplicate __________?​​ (Intro Containers/Kubernetes/ROKS Module 3) A. pods ​B. deployments ​C. clusters ​D. configurations

​B. deployments

7. Which of the following can be used to create ConfigMaps? (Intro Containers/Kubernetes/ROKS Module 3) ​A. The kubectl add configmap command ​B.A file with key-value pairs ​C. Service bindings​ D. Horizontal Pad Autoscaler

​B.A file with key-value pairs

6. Which of the following is a Kubernetes object?​ (Intro Containers/Kubernetes/ROKS Module 2) A. Kubelet ​B. Cluster ​C. Namespace ​D. Directory

​C. Namespace

6. Physical hardware is traditionally virtualized by which of the following? (Intro Containers/Kubernetes/ROKS Module 1)​ A. Kubernetes ​B. Containers​ C. Namespaces ​D. Hypervisors

​D. Hypervisors

10. Rolling updates provide a way to publish changes to applications without noticeable interruptions for the user. Which of the following is another feature of rolling updates?​​ (Intro Containers/Kubernetes/ROKS Module 3) A.Configure changes​ B. Scale up changes​ C. Scale down changes ​D. Roll back changes

​D. Roll back changes