Docker Certified Associate (DCA) Test Review Questions Set 7 – Networking Part 1

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Mar 13, 2018 by Trijito Santoso in Certification

Docker Certified Associate Test Review Questions Set 7 - Networking Part 1

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Congratulations - you have completed Docker Certified Associate Test Review Questions Set 7 - Networking Part 1. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%

Your answers are highlighted below.

Question 1

What is the docker command to connect a running container to an existing user-defined bridge?

A	docker network attach
B	docker network join
C	docker connect network
D	docker network connect

Question 1 Explanation:

Reference: https://docs.docker.com/network/bridge/#connect-a-container-to-a-user-defined-bridge

Question 2

Which of the following statements is false?

A	Containers can NOT be attached and detached from user-defined networks on the fly
B	Linked containers on the default bridge network share environment variables
C	User-defined bridges provide better isolation and interoperability between containerized applications
D	User-defined bridges provide automatic DNS resolution between containers
E	Each user-defined network creates a configurable bridge

Question 2 Explanation:

Reference: https://docs.docker.com/network/bridge/#differences-between-user-defined-bridges-and-the-default-bridge

Question 3

Which of the following docker command can be used to find out all the ports mapped? (select three)

A	docker network ls
B	docker inspect
C	docker port
D	docker ps

Question 3 Explanation:

Reference: https://docs.docker.com/engine/reference/commandline/port/#examples

Question 4

Which network driver type is best when the network stack should not be isolated from the Docker host, but you want other aspects of the container to be isolated?

A	Overlay networks
B	Macvlan networks
C	User-defined bridge networks
D	Host networks

Question 4 Explanation:

Reference: https://docs.docker.com/network/#network-drivers

Question 5

What is the docker command to display detailed information on one or more networks?

A	docker network status
B	docker network inspect
C	docker inspect network
D	docker network display

Question 5 Explanation:

Reference: https://docs.docker.com/engine/reference/commandline/network_inspect/

Question 6

Which network driver type is best when you are migrating from a VM setup or need your containers to look like physical hosts on your network, each with a unique MAC address?

A	Macvlan networks
B	Host networks
C	User-defined bridge networks
D	Overlay networks

Question 6 Explanation:

Reference: https://docs.docker.com/network/#network-drivers

Question 7

What is the docker command to create a bridge network?

A	docker create network
B	docker network deploy
C	docker network add
D	docker network create

Question 7 Explanation:

Reference: https://docs.docker.com/network/bridge/#manage-a-user-defined-bridge https://docs.docker.com/engine/reference/commandline/network_create/

Question 8

Which network driver type is best when you need multiple containers to communicate on the same Docker host?

A	User-defined bridge networks
B	Host networks
C	Macvlan networks
D	Overlay networks

Question 8 Explanation:

Reference: https://docs.docker.com/network/#network-drivers

Question 9

What is the docker run option to publish a port so that an application is accesible externally?

A	docker run --publish-port
B	docker run --expose
C	docker run --publish
D	docker run --open-port

Question 9 Explanation:

Reference: https://docs.docker.com/engine/reference/run/#expose-incoming-ports https://docs.docker.com/engine/reference/commandline/run/#options https://docs.docker.com/engine/reference/builder/#maintainer-deprecated

Question 10

Which network driver type is best when you need containers running on different Docker hosts to communicate, or when multiple applications work together using swarm services?

A	User-defined bridge networks
B	Host networks
C	Overlay networks
D	Macvlan networks

Question 10 Explanation:

Reference: https://docs.docker.com/network/#network-drivers

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NOTES: For other review question sets and resources, you may want to check Docker Certified Associate (DCA) Certification Test Resources page.

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