You use Computer Vision OCR containers to extract printed text from a set of PDF documents. To configure the docker runtime environment, you use following docker run command: 
<pre class="brush:java;">docker run --rm -it -p 5000:5000 \
--memory 2g --cpus 1 \
--mount type=bind,src=/home/&lt;user&gt;/output,target=/output \
&lt;registry-location&gt;/&lt;image-name&gt; \
Eula=accept \
Billing=&lt;endpoint&gt; \
ApiKey=&lt;api-key&gt; \
HTTP_PROXY=&lt;proxy-url&gt; \
HTTP_PROXY_CREDS=&lt;proxy-user&gt;:&lt;proxy-password&gt; \
Logging:Disk:Format=json
</pre>
In this command, multiple configuration settings are used. Review the answer choices below and choose settings that are optional. (choose two answer choices)

Answer options:

A.ApiKey
B.Logging
C.HTTP_PROXY
D.Eula
E.Billing

Correct Answers: B and C
Option A is incorrect because the ApiKey setting is a required setting to track container’s billing information. You can find the ApiKeyin the Azure Portal, under the management blade of the Cognitive Services Resource.
Option B is correct because Logging is an optional setting. It offers the ASP.NET Core logging support for the containers. You can also use this setting for the debug purpose.
Option C is correct because HTTP_PROXY is also an optional setting. If you have a requirement to configure a proxy for outbound calls, use this setting in your docker run command.
Option D is incorrect because Eula is a required setting that states that you have accepted the license agreement for the container.
Option E is incorrect because Billing is a required setting as it provides the billing endpoint url for the cognitive service. You can find this value in the Azure Portal, under the overview blade of the Cognitive service resource.
Reference:
To learn more about configuring the Read OCR Docker containers, use the link given below: 

https://docs.microsoft.com/en-us/azure/cognitive-services/computer-vision/computer-vision-resource-container-config?tabs=version-3-2