Docker Interview Questions and Answer Part – 13

Which of the following problems (not solved by hypervisor virtualization) do containers solve?

• Heterogeneous application management
• Network Function Virtualization (NFV)
• Software Defined Storage (SDS)
• Overheads incurred by the multiplicity of Operating Systems (OS) (Ans)

Which of the following commands will download the Ubuntu image from Docker Hub?

• dkr pull ubuntu
• docker download ubuntu
• docker pull ubuntu (Ans)
• dkr download ubuntu

What is the Open Container Initiative responsible for?

• Container security standards
• Container format and runtime standards (Ans)
• Image format and orchestration standards
• The Docker Remote API

Which of the following is an important question to answer within your organization?

• Which public cloud platform to deploy your container infrastructure on
• Whether to deploy your containerized apps on Windows or Linux systems
• Who will pay for container-related infrastructure and services (Ans)

What are the three Docker channels?

• Community, Docker, 3rd Party
• Linux, Windows, BSD
• Experimental, Stable, Commercially Supported (Ans)
• Development, Test, Production

Which of the following is true of Docker containers?

• Docker containers are not persistent.
• Docker containers only run in the cloud.
• Docker containers are persistent. (Ans)
• Docker containers are more secure than virtual machines.

Which of the following products can run inside of a corporation’s firewall and allows them to ship containerized apps?

• Docker Universal Control Plane
• Docker Hub
• Docker Content Trust
• Docker Trusted Registry (Ans)

Where is Docker Inc. based?

• Boston, Massachusetts
• Austin, Texas
• San Jose, California
• San Francisco, California (Ans)

Which Docker Technology turns on image signing and verification for pushing and pulling images?

• Docker Image Trust
• Docker Content Trust (Ans)
• Docker Trusted Registry
• Docker Trusted Images

Which of the following is not an advantage of containerized cloud native apps?

• Portability
• Security (Ans)
• Scalability
• Self-healing

If you needed to deploy a container registry within your own corporate firewall that you own and manage, which of the following products could you use?

• Docker Trusted Repository
• Private repositories on Docker Hub
• Docker Trusted Hub
• Docker Trusted Registry (Ans)

Which of the following is true of ECS?

• ECS offers integration with either the ECS registry or Docker Hub images. (Ans)
• Besides for the regular AWS resources in use, ECS charges users on a per-cluster basis.
• ECS automatically launches a fully-managed EC2 instance for every cluster created.
• At the cluster level, ECS can only be managed from the browser-based console.

You can display detailed information about an ECS cluster from the command line using…

• aws ecs cluster –help
• aws ecs clusters –list
• aws ecs list-clusters
• aws ecs describe-clusters (Ans)

You can set load balancing and auto scaling for a deployment in the _______ configuration menu of the console.

• Container (Ans)
• Cluster Update
• Task Definitions
• Services

Adding the “Amazon EC2 Container Service for EC2 Role” to your EC2 instance allows __________.

• ECS resources to connect to the EC2 instance
• the EC2 instance to be registered within an ECS system
• the EC2 instance to connect to ECS resources (Ans)
• the account root user to manage the EC2 instance

An ECS task can be described as:

• A software tool used to manage cluster resources
• A software agent used to enable communication across a cluster environment
• A collection metadata defining the environment elements needed to launch Docker containers (Ans)
• A virtual container profile

Which of the following files on an EC2 ECS-optimized AMI instance must be edited to permit access to Docker Hub private repositories?

• /etc/ecs/ecs.config (Ans)
• /etc/ecs-config
• /ecs/ecs.config
• /etc/ecs/ecs-config

What is the primary purpose of adding a tag to a Docker image?

• To identify the object as an image
• To identify the image’s ownership and origin
• To allow for easier visual identification once your infrastructure grows
• To direct Docker to the appropriate remote repository (Ans)

Which of the following commands will return authentication credentials for the EC2 Container Repository service?

• aws ecr login –region
• aws ecr get-login –region (Ans)
• aws get-login –region
• aws get-region

Which of these tools provides information about all the Docker resources on your system?

• docker info (Ans)
• docker inspect
• docker images
• docker ps

Rajesh Kumar

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