Will this action upgrade Docker Engine CE to Docker Engine EE?Solution: Manually download the 'docker-ee' package
Answer(s): B
= Manually downloading the `docker-ee' package will not upgrade Docker Engine CE to Docker Engine EE. Docker Engine CE and Docker Engine EE are two different products with different installation methods and features. Docker Engine CE is a free and open source containerization platform, while Docker Engine EE is a subscription-based enterprise-grade platform that offers additional features such as security scanning, certified plugins, and support. To upgrade fromDocker Engine CE to Docker Engine EE, you need to uninstall Docker Engine CE and install Docker Engine EE following the official documentation.
What is the exact difference between Docker EE (Enterprise Edition), Docker CE (Community Edition) and Docker (Custom Support) - Stack OverflowDifference between Docker Community Edition (CE) vs Docker Enterprise Edition (EE) in 2020Install Docker Engine | Docker Docs
The Kubernetes yaml shown below describes a clusterIP service.Is this a correct statement about how this service routes requests?Solution: Traffic sent to the IP of this service on port 8080 will be routed to port 80 in a random pod with the label aPP: nginx.
Answer(s): A
The statement is correct. In the provided Kubernetes YAML, it's defined that traffic sent to the IP of this service on port 8080 will be routed to port 80 in a random pod with the label app: nginx. This is because it's a ClusterIP service type which is meant for internal communication within the cluster, and it uses selectors to route traffic to the correct pods.
Docker Certified Associate Guide, DCA Prep Guide
The Kubernetes yaml shown below describes a clusterIP service.Is this a correct statement about how this service routes requests?Solution: Traffic sent to the IP of any pod with the label app: nginx on port 8080 will be forwarded to port 80 in that pod.
The statement is incorrect because it does not mention the service name or the clusterIP address. Traffic sent to the IP of any pod with the label app: nginx on port 8080 will not be forwarded to port 80 in that pod, unless the traffic is coming from another pod within the same cluster that knows the pod IP. To access the service from outside the cluster, the traffic must be sent to the clusterIP address of the service, which is assigned by Kubernetes, and the port 8080 of the service, which is defined in the yaml file. The service will then forward the traffic to one of the selected pods on port 80.To summarize, the correct statement should be:Traffic sent to the clusterIP address of the service dca on port 8080 will be forwarded to port 80 in one of the pods with the label app: nginx.
In the context of a swarm mode cluster, does this describe a node?Solution: a physical machine participating in the swarm
A node is a physical or virtual machine running Docker Engine in swarm mode. A node can be either a manager or a worker, depending on its role in the cluster. A physical machine participating in the swarm is a node, regardless of its role or availability.
How nodes work | Docker DocsManage nodes in a swarm | Docker Docs
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