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Question 1

How can you include external configuration sources in Helidon?

Options :

A : By using configuration templates with placeholders

B : By adding external configuration files to the classpath

C : By combining multiple configuration files into a single file

D : By importing configuration files using the importConfig() method

Answer: D

Question 2

In Helidon, how can you prioritize the order in which configuration sources are used?

Options :

A : By using the `ConfigSources.order()` method to define the order of the sources

B : By using the `Config.priority(int)` method with a numerical value for each source

C : By using the `ConfigSources.classpath()` method with the desired order of sources

D : By using the `Config.override()` method to set the priority of a specific source

Answer: A

Question 3

What is the purpose of domain-driven design (DDD) in microservices architecture?

Options :

A : To model the business domain

B : To manage database schemas

C : To handle inter-service communication

D : To define the UI components

Answer: A

Question 4

Which design pattern is often used to provide fault-tolerance in microservices architecture?

Options :

A : Observer

B : Adapter

C : Circuit breaker

D : Singleton

Answer: C

Question 5

Which Helidon module provides support for reactive programming?

Options :

A : Helidon Reactive

B : Helidon MP

C : Helidon SE

D : Helidon GraphQL

Answer: B