33880690
Descripción
Test por Matt Beranek , actualizado hace más de 1 año
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Creado por Matt Beranek
hace alrededor de 5 años
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Pregunta 1
Pregunta
Which is a benefit of containers?
Respuesta
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Each container runs its own operating system
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They supply portability between different platforms and clouds
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Like virtual machines, containers virtualize an infrastructure.
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Each container is fully isolated and therefore secure
Pregunta 2
Pregunta
What is one of the reasons that containers are considered a better option than virtual machines?
Respuesta
-
Containers include a guest operating system in every instance
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Containers are fully isolated
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Containers are small and do not consume as many resources
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Containers are an orchestration platform
Pregunta 3
Pregunta
Which of the following defines a read-only file that holds code, libraries, and dependencies required by an application to run?
Respuesta
-
A container image
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Dockerfile
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a container
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Kubernetes
Pregunta 4
Pregunta
Which of the following is true regarding containers?
Respuesta
-
Containers need special hardware
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Containers do not require a guest OS
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Containers do not require user applications
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Containers mean application libraries are not required
Pregunta 5
Pregunta
What are the OS primitives that enable virtualization in the Linux Kernel?
Respuesta
-
Syscalls and cgroups
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Namespace and syscalls
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projects and cgroups
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namespace and cgroups
Pregunta 6
Pregunta
Physical hardware is traditionally virtualized by which of the following?
Respuesta
-
Kubernetes
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Containers
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Namespaces
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Hypervisors
Pregunta 7
Pregunta
Which of the following is a platform used for container orchestration?
Respuesta
-
OpenStack
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Kubernetes
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Docker
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Ansible
Pregunta 8
Pregunta
What is an important different between containers and virtual machines?
Respuesta
-
Containers virtualize hardware and VMs virtualize the OS
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Containers virtualize the OS and VMs vitualize the hardware
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Containers virtualize the OS and VMs virtualize the registry
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VMs virtualize the hardware and Continers virtualize the registry
Pregunta 9
Pregunta
What is a Docker file?
Respuesta
-
A blueprint that contains the source code, libraries, and dependencies necessary for an application to run
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An open-source community that develops container technologies
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A text file that contains project and configuration information for Maven
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A container runtime, or software that executes containers
Pregunta 10
Pregunta
Which of the following is considered immutable?
Respuesta
-
Image
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Container
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Docker
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Node
Pregunta 11
Pregunta
Resizing a VM to add additional capacity is part of which of the following?
Respuesta
-
Vertical scaling
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Horizontal scaling
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Hardware Virtualization
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System rationalization
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Containers
Pregunta 12
Pregunta
Adding more VMs to a cluster to increast capacity is which of these?
Respuesta
-
Scale distinctively
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Scale proportionally
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Scale under
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Scale out
Pregunta 13
Pregunta
Replicating a Pod serves to scale an application in which of the following ways?
Respuesta
-
Horizontally
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Vertically
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Upward
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Downward
Pregunta 14
Pregunta
Which of the following statements describes Kubernetes?
Respuesta
-
Open Source software
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Container orchestration platform
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A tool that facilitates declarative management
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All of the above
Pregunta 15
Pregunta
Which of the following components is part of the K8s control plane?
Respuesta
-
The worker nodes
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The Kubelet
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etcd
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The K8s network proxy
Pregunta 16
Pregunta
Which of the following is considered a K8s object?
Respuesta
-
Kubelet
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Cluster
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Namespace
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Directory
Pregunta 17
Pregunta
Which K8s object represents a single instance of processes running in a container?
Respuesta
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Cluster
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Deployment
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Kubelet
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Pod
Pregunta 18
Pregunta
What does "create" do in this command?
kubectl create -f nginx.yaml
Respuesta
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It creates a YAML file named nginx.yaml
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It creates an object using the details in the nginx.yaml file
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It creates a new cluster using the details in the inginx.yaml file
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It creates a configuration file for an nginx web server
Pregunta 19
Pregunta
What are some of the benefits of an IKS service ? Select all that apple
Respuesta
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Image security compliance with Vulnerability Advisor
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Support for multizone clusters
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Continuous monitoring of the cluster health
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Highly available masters
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All the above
Pregunta 20
Pregunta
Each node is made up of which of the following pairs?
Respuesta
-
kube-controller manager and kube-proxy
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kube-proxy and kube-api-server
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kube-proxy and kubelet
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kubelet and etcd
Pregunta 21
Pregunta
What occurs if the Cluster Autoscaler detects pending pods?
Respuesta
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The Autoscaler deploys additional clusters
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The Autoscaler scales up more worker nodes
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The Autoscaler shuts down the oldest pod to make room for the pending pod
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The Autoscaler adds additional resources to existing pods to handle the workload
Pregunta 22
Pregunta
In Kubernetes, which of the following is responsible for scaling out?
Respuesta
-
DaemonSet
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Horizontal Pod Autoscaler
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Cloud controller manager
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Kube-scheduler
Pregunta 23
Pregunta
What will occur in the Horizontal Pod Autoscaler if utilization is higher than specified?
Respuesta
-
Additional resources will be added to the cluster
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More pods will be created
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More worker nodes will be created
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The Autoscaler will tell the controller to limit requests until normal again
Pregunta 24
Pregunta
What happens if work nodes are under-utilized?
Respuesta
-
The cluster Autoscaler scales down worker nodes one at a time
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The cluster Autoscaler adds pods to the worker nodes until they are full
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The cluster Autoscaler terminates pods that arent currently servicing requests
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The cluster Autoscaler waits until this situation is detected again before acting.
Pregunta 25
Pregunta
The Horizontal Pod Autoscaler monitors which of the following?
Respuesta
-
Worker node count
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CPU utilization
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Network latency
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Cluster efficiency
Pregunta 26
Pregunta
Which of the following Kubernetes objects are used to store and manage sensitive information?
Respuesta
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Service bindings
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ConfigMaps
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Secrets
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Replica Sets
Pregunta 27
Pregunta
Which of the following can be used to create ConfigMaps?
Respuesta
-
The kubectl add configmap command
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A file with key-value pairs
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Service bindings
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Horizontal Pad Autoscaler
Pregunta 28
Pregunta
ReplicaSets enable users to scale applications by running duplicate ______ ?
Respuesta
-
Pods
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Persistent Volume
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Clusters
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Configurations
Pregunta 29
Pregunta
ConfigMaps and secrets are used to store ______ and ________ .
Respuesta
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Configurations, credentials
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Code, program parameters
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Logs, authentication
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yaml files, logs
Pregunta 30
Pregunta
Rolling updates provide a way to publish changes to apps without noticeable interruptions for the end user. Which of the following is another feature of rolling updates?
Respuesta
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Configure changes
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Scale up changes
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Scale down changes
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Roll back changes
Pregunta 31
Pregunta
Red Hat OpenShift offers an integrated container registry by default as opposed to that of a K8s cluster.
Respuesta
- True
- False
Pregunta 32
Pregunta
OperatorHub is included in which of the following consoles?
Respuesta
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Docker
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OpenShift
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IBM Console
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Kubernetes
Pregunta 33
Pregunta
Red Hat OpenShift on IBM Cloud is which type of service?
Respuesta
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Operational
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Managed
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Closed
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Forbidden
Pregunta 34
Pregunta
Cloud native applications are small, _______ , loosely coupled services.
Respuesta
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Symbiotic
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Reliable
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Interdependent
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Independent
Pregunta 35
Pregunta
Which of the following most accurately describes the relationship between Red Hat OpenShift and Kubernetes?
Respuesta
-
Red Hat OpenShift packages K8s with additional tooling to make developers and administrators more productive.
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Red Hat OpenShift is a tool in the K8s ecosystem that can be used in conjunction with K8s to deploy cloud-native apps.
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Red Hat OpenShift can be deployed on a K8s cluster to provide additional tooling such as logging, monitoring, and CI/CD.
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Red Hat OpenShift plugs into K8s through custom resource definitions to provide build and other capabilities
Pregunta 36
Pregunta
Which of the following is a Red Hat OpenShift Build trigger ?
Respuesta
-
Source-to-image
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Docker build
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Webhook
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Kube-build
Pregunta 37
Pregunta
Which of the following are operators available in OperatorHub within the OpenShift console? Select all that apply
Respuesta
-
Red Hat
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Certified
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Community
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Controller
Pregunta 38
Pregunta
Image Streams can point to images in which of the following locations?
Respuesta
-
Public external registries
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Red Hat OpenShift internal registry
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Private external registries
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K8s cluster
Pregunta 39
Pregunta
Red Hat OpenShift can be run in which of the following environments? Select all that apply!
Respuesta
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Public cloud
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Private Cloud
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On prem
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Hybrid cloud
Pregunta 40
Pregunta
What is the upstream version of Red Hat OpenShift called?
Respuesta
-
OKD
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K8s open source
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CRD
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Enterprise Linux CoreOS
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