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Total 60 Questions | Updated On: Nov 19, 2024

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Question 1

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.)

A : Use a host network instead of a bridged network.

B : Add the option --inter-container to the docker network create command.

C : Start the containers on the same node.

D : Change the --network parameter of docker create to --network=isolated_nw,nofence.

E : Use an overlay network instead of a bridged network.

Answer: C,D

Question 2

An Ansible variable file contains the following content:

myapp:

option1: one

Which of the following strings can be used to reference the defined variable? (Choose two

correct answers).

A : myapp(option1);

B : option1@myapp

C : myapp[‘option1’]

D : myapp.option1

E : myapp{{option1}}

Answer: A

Question 3

Which statements are true regarding databases during the deployment of a new release of a service using canary deployment? (Choose two correct answers.)

A : Changes to the database schema can take long and reduce the database performance.

B : Traffic to the database will significantly increase because of the additional service instance.

C : The database schema must be compatible to all running versions of a service.

D : The database is locked while its content is copied to the canary database.

E : Canary deployments require two synchronized instances of each database.

Answer: A,B

Question 4

What statement is true regarding the Swarm service created by the following command? docker service create --name myweb --network webnet --mode global nginx

A : It runs exactly one time in the Swarm and cannot be scaled.

B : It runs exactly once on each node in a Swarm.

C : It runs on one node by default and can be scaled to an arbitrary number of replicas.

D : It runs on all nodes which provide the network webnet.

E : It runs only on those nodes which support the network type global.

Answer: C

Question 5

What is tested by unit tests?

A : The syntactical correctness of the source code of a software component.

B : The formal validity of a service’s external REST API.

C : The integration of multiple component of the same software.

D : The correctness of a specific function of a software component.

E : The throughput, load capacity and latency of a service.

Answer: D

Page: 1 / 12

Total 60 Questions | Updated On: Nov 19, 2024

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