ExamGecko
Search Search Login
Home Home / Docker / DCA

Docker DCA Practice Test - Questions Answers, Page 19

Question list
Search
Search
Open VPLUS File
Convert VPLUS to PDF

Related questions

Will this command display a list of volumes for a specific container? Solution. 'docker container logs nginx --volumes'
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.
The Kubernetes yaml shown below describes a networkPolicy. Will the networkPolicy BLOCK this traffic? Solution: a request issued from a pod lacking the tier: api label, to a pod bearing the tier: backend label
Does this command create a swarm service that only listens on port 53 using the UDP protocol? Solution. 'docker service create -name dns-cache -p 53:53 -constraint networking.protocol.udp=true dns-cache'
Will this command list all nodes in a swarm cluster from the command line? Solution. 'docker inspect nodes
Is this a supported user authentication method for Universal Control Plane? Solution. x.500
Is this a way to configure the Docker engine to use a registry without a trusted TLS certificate? Solution. Set INSECURE_REGISTRY in the' /etc/docker/default' configuration file.
A Kubernetes node is allocated a /26 CIDR block (64 unique IPs) for its address space. If every pod on this node has exactly two containers in it, how many pods can this address space support on this node?
A user's attempts to set the system time from inside a Docker container are unsuccessful. Could this be blocking this operation? Solution. SELinux
Will this command display a list of volumes for a specific container? Solution: docker volume inspect nginx'

Question 181

Report
Export
Collapse

Will this action upgrade Docker Engine CE to Docker Engine EE?

Solution. Disable the Docker service via 'chkconfig' or 'systemctl'.

A.

Yes

A.

Yes

Answers
B.

No

B.

No

Answers
Suggested answer: B

Explanation:

The action willnotupgrade Docker Engine CE to Docker Engine EE.Disabling the Docker service viachkconfigorsystemctlwill only stop the Docker daemon from running, but it will not change the version or edition of the Docker engine1.To upgrade Docker Engine CE to Docker Engine EE, you need to follow these steps2:

Download your Docker Enterprise license from theDocker Store).

Install thedocker-eepackage from the Docker repository.

Restart the Docker service and verify the version and edition.Reference: Start or stop the Docker daemon),How to upgrade Docker 18.09 Community Edition to Docker Enterprise 18.09)

Question 182

Report
Export
Collapse

Will this action upgrade Docker Engine CE to Docker Engine EE?

Solution. Run docker engine activate.

A.

Yes

A.

Yes

Answers
B.

No

B.

No

Answers
Suggested answer: A

Explanation:

Runningdocker engine activatewill upgrade Docker Engine CE to Docker Engine EE. This is a feature that allows you to switch from the Community Edition to the Enterprise Edition without reinstalling Docker or losing any data.You need to have a valid license file and a subscription to Docker EE to use this feature1.Docker EE is a premium version of Docker CE that offers additional features, such as security scanning, image management, and certified plugins23.Reference:

Upgrade Docker Engine | Docker Docs

What is the exact difference between Docker EE (Enterprise Edition), Docker CE (Community Edition) and Docker (Custom Support) - Stack Overflow

Docker Community Edition or Docker Enterprise Edition - Docker | BoxBoat

Question 183

Report
Export
Collapse

Does this command display all the pods in the cluster that are labeled as env; development'?

Solution. 'kubectl gel pods --all-namespaces -I 'env in (development)''

A.

Yes

A.

Yes

Answers
B.

No

B.

No

Answers
Suggested answer: B

Explanation:

The commandkubectl gel pods --all-namespaces -l 'env in (development)'does not display all the pods in the cluster that are labeled asenv: development. The command has two typos that prevent it from working correctly. First, the verb should begetinstead ofgel.Second, the label selector flag should be-linstead of-I1.The correct command should bekubectl get pods --all-namespaces -l 'env in (development)', which will list all the pods across all namespaces that have a labelenvwith a valuedevelopment2.Reference:

kubectl Cheat Sheet | Kubernetes

Labels and Selectors | Kubernetes

Total 183 questions
Go to page: of 19
ExamGecko

Copyright @2023 ExamGecko | All right reserved

Mail us: [email protected]
About us
Contact us
Twitter X
Facebook
Medium
Convert VPLUS to PDF
Open VPLUS files Easily and Quickly
Privacy Policy
Disclaimer
Terms