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Questions and Answers
Which statements about Docker and Containers are TRUE? (Multi-Select)
Which statements about Docker and Containers are TRUE? (Multi-Select)
- Containers can run on the cloud; Docker Hub is a registry
- Multiple containers can be run from a single Docker image
- A & B (correct)
- A container is an instance of a Dockerfile
A Docker container uses the "localhost" alias to communicate with the host machine
A Docker container uses the "localhost" alias to communicate with the host machine
- True
- False (correct)
- Null
- Null
Which statement about Docker is true?
Which statement about Docker is true?
- Containers are hosted in a Docker registry
- Every container is a microservice
- Legacy systems cannot be containerised
- Port forwarding allows the outside world to reach a container (correct)
Requests on host port 5100 are mapped to internal container IP/port at 172.17.0.3:5000
mapping localhost:5100 to 172.17.03:5000
Requests on host port 5100 are mapped to internal container IP/port at 172.17.0.3:5000
mapping localhost:5100 to 172.17.03:5000
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Which of the following statements is FALSE about Docker? (One answer)
Which of the following statements is FALSE about Docker? (One answer)
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How does Docker handle port conflicts when mapping the same external port to multiple containers?
How does Docker handle port conflicts when mapping the same external port to multiple containers?
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Study Notes
Docker and Containers
- A Docker container uses the
localhostalias to communicate with the host machine.
Port Mapping
- Requests on host port 5100 are mapped to internal container IP/port at
172.17.0.3:5000. - This is achieved by mapping
localhost:5100to172.17.0.3:5000.
Port Conflicts
- Docker handles port conflicts when mapping the same external port to multiple containers.
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Description
Docker
