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Docker DCA Online practice testing questions and answers

Welcome to your Docker DCA practice test

QUESTION 1

Which flag for a service would allow a container to consume more than 2 GB of memory only when there is no memory
contention but would also prevent a container from consuming more than 4GB of memory, in any case?

A. –limit-memory 2GB –reserve-memory 4GB

B. –limit-memory 4GB –reserve-memory 2GB

C. –memory-swap 2GB –limit-memory 4GB

D. –memory-swap 4GB –limit-memory 2GB

QUESTION 2

The output of which command can be used to find the architecture and operating system an image is compatible with?

A. docker image inspect –filter {{.Architecture}} {{.OS}} \\’

B. docker image ls

C. docker image inspect –format {{.Architecture}} {{.OS}} \\’

D. docker image info

QUESTION 3

Will this command list all nodes in a Swarm cluster from the command line? Solution: \\’docker node Is\\’

A. Yes

B. No

QUESTION 4

Which of the following namespaces is disabled by default and must be enabled at Docker engine runtime in order to be used?

A. user

B. pid

C. net

D. mnt

QUESTION 5

Is this an advantage of multi-stage builds?

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