LPI 701-100 Exam - Topic 2 Question 20 Discussion

Actual exam question for LPI's 701-100 exam

Question #: 20
Topic #: 2

The following command is issued on two docker nodes:

docker network create --driver bridge isolated_nw

Afterwards, one container is started at each node with the parameter --network=isolated_nw. It turns out that the containers can not interact with each other. What must be done in order to allow the containers to interact with each other? (Choose two correct answers.)

AUse a host network instead of a bridged network.

BAdd the option --inter-container to the docker network create command.

CStart the containers on the same node.

DChange the --network parameter of docker create to --network=isolated_nw,nofence.

EUse an overlay network instead of a bridged network.

Show Suggested Answer

Suggested Answer: C, D

Reference https://docs.docker.com/v17.09/engine/userguide/networking/#bridge-networks

by Rima at May 03, 2022, 05:41 AM

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Jacqueline

4 months ago

I thought bridged networks could work across nodes, guess I was wrong!

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Wynell

4 months ago

Starting containers on the same node is a workaround, but not ideal.

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Janey

4 months ago

Wait, can’t you just use a host network instead?

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Launa

4 months ago

Totally agree, bridged networks are limited to a single host.

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Ellen

5 months ago

You need an overlay network for cross-node communication.

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Lashunda

5 months ago

I don't recall any option like --inter-container in the Docker documentation. That one seems off to me.

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Nicolette

5 months ago

I practiced a similar question, and I feel like using a host network might work, but it seems risky for isolation.

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Osvaldo

5 months ago

I'm not entirely sure, but I think starting the containers on the same node could allow them to interact. That seems like a simpler solution.

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Jacquelyne

5 months ago

I remember something about bridge networks being limited to a single host, so I think we might need an overlay network for cross-node communication.

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Casie

5 months ago

I'm a bit confused by the different output options. I'll need to run the code myself or carefully walk through it to figure out which one is correct.

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Melina

5 months ago

Hmm, I'm a bit unsure about this one. There seem to be a few different options, and I want to make sure I choose the right approach to get all the users configured correctly.

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Keneth

5 months ago

Hmm, this looks like a tricky one. I'll need to think carefully about the different types of files used for inter-process communication.

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Mel

5 months ago

I remember something about the structure of the function, but I'm not certain how the message should be formatted before sending it.

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Gracia

5 months ago

Focus on what doesn't align with professional standards. Diverse perspectives and cross-functional expertise are crucial in fraud assessment, so I'd rule out the statement about team size.

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