Docker Container Deployment ECDE Practice Questions (Page 2)

Questions 6–10

1. 6expert · medium

   A team is using Docker Compose to deploy a web application and a database. The web application needs to be accessible from outside the host, but the database should only be accessible from the web application. Which compose file configuration achieves this?

   • AUse the default bridge network and rely on port mapping.
   • BPublish both the web and database ports to the host.
   • CUse host networking for both services.
   • DPublish only the web service's port to the host, and do not publish the database port.
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2. 7application · easy

   A team is running a web application in a Docker container on a host. The application listens on port 8080 inside the container, and users need to access it from outside the host on port 80. Which docker run command achieves this?

   • Adocker run -p 8080:80 myapp
   • Bdocker run -p 80:8080 myapp
   • Cdocker run --expose 8080 myapp
   • Ddocker run --network host myapp
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4. 8application · medium

   A Docker Compose application defines a web service and a database service. The web service needs to communicate with the database using the service name 'db' as the hostname. What is the default behavior in a Compose-defined network?

   • AThe web service must be linked to the database using the 'links' option.
   • BThe web service must use the database container's IP address.
   • CThe web service can reach the database using the hostname 'db' automatically.
   • DThe web service cannot communicate with the database unless ports are published.
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5. 9foundation · medium

   Which Docker command creates a new custom bridge network named 'app-net'?

   • Adocker network build app-net
   • Bdocker network connect app-net
   • Cdocker network create app-net
   • Ddocker network new app-net
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6. 10application · easy

   A containerized application is writing logs to stdout, but the team wants to view the logs in real time to debug an issue. Which command should be used?

   • Adocker attach mycontainer
   • Bdocker logs --tail 10 mycontainer
   • Cdocker exec mycontainer tail -f /var/log/app.log
   • Ddocker logs -f mycontainer
   Reveal Solution Discussion Select an answer first