Exam 200-901 topic 1 question 182 discussion

must be B https://docs.docker.com/config/containers/container-networking/ -p 8080:80 Map TCP port 80 in the container to port 8080 on the Docker host.

you are allowing others to connect thus is the host port imo.

When you run this command, Docker sets up a network rule that forwards traffic arriving at host_port on your machine to container_port inside the container. This allows you to access the application running inside the container from your host machine. For example, if you run the command docker run -p 8080:80 nginx, it will map port 8080 on your host machine to port 80 inside the container. This means that if the Nginx server inside the container is listening on port 80, you can access it by opening your web browser and going to http://localhost:8080 (or http://<your_host_ip>:8080 if you are accessing it from a different machine on the network)

Expose a port to external clients, question mentioned 8443, we already know that by default API's listen to 443, should be C.

C is correct. Wording in the question implies that 8443 should be exposed towards other developers, hence 8443:443

the answer is C

Which command exposes the API in the container as port 8443 and allows connections external to the host? As others said - terribly worded question. Since the question is asking for the command to expose the API "as" port 8443, I would interpret it that the internal port of the API (443) is being mapped to 8443 on the host. Answers A and B are wrong, since they are limited to localhost, thus no external connections.

B is correct, public:docker port

Yet another terribly worded question. When it says "which command exposes the API in the container as port 8443," it sounds like it's asking which port the container is using. But the word "as" implies it's asking what is representing the container's internal port as 8443 to the rest of the world. If that's the case, then B would be correct. It's really unfortunate that Cisco employs these methods in their testing. Either they're sloppy, or they're intentionally testing us on the subtleties of the semantics of the English language which don't mean anything when it comes to actually doing DevNet.

It's B

To expose the API in a container on port 8443 and allow external connections to the host on port 443, you can use the -p flag with docker run to publish a specific port from the container to the host. This will expose the API running in the container on port 8443, and allow external connections to the host on port 443. The port number on the left side of the colon (443) is the port on the host, and the port number on the right side (8443) is the port inside the container.

C is correct

The docker port expose is 8443

it is C

The syntax for -p is HOST_PORT:CLIENT_PORT In this case the HOST_PORT is gonna be 8443 so it can be expose for external usage

Correct is C https://docs.docker.com/desktop/networking/

C imho