Developing Applications and Automating Workflows Using Cisco Platforms (DEVASC) — Question 104

A local Docker alpine image has been created with an image ID of a391665405fe and tagged as `latest`. Which command creates a running container based on the tagged image, with the container port 8080 bound to port 80 on the host?

Answer options

• A. docker build -p 8080:80 alpine:latest
• B. docker exec -p 8080:80 alpine:latest
• C. docker start -p 8080:80 alpine:latest
• D. docker run -p 8080:80 alpine:latest

Correct answer: D

Explanation

The correct command is 'docker run -p 8080:80 alpine:latest' because it is specifically designed to create and start a container from an image. The other options are incorrect because 'docker build' is used to create an image, 'docker exec' runs a command in an existing container, and 'docker start' only starts an already created container without the capability to bind ports.