LCA Cloud Integration & Deployment 4

Question 1

What command exports a Docker image as a tar archive that can be transferred to another host?

Accepted Answer

docker save myimage -o image.tar

Answer

'docker save' exports one or more images to a tar archive, preserving layers and metadata for later import with 'docker load'.

Question 2

In Terraform, what is the purpose of the 'terraform.tfstate' file?

Accepted Answer

It records the current state of managed infrastructure resources

Answer

The terraform.tfstate file records the current state of all resources managed by Terraform, enabling it to detect drift and plan incremental changes.

Question 3

Which cloud-init directive is used to run shell commands during the first boot of a cloud instance?

Accepted Answer

#cloud-config with 'runcmd'

Answer

The 'runcmd' directive in cloud-init user data runs a list of commands once during the final stage of the first boot.

Question 4

What does the 'kubectl get pods -n kube-system' command do?

Accepted Answer

Lists pods running in the kube-system namespace

Answer

The '-n kube-system' flag scopes the query to the kube-system namespace, which contains core cluster components like CoreDNS and kube-proxy.

Question 5

Which Docker networking driver allows containers on different hosts to communicate as if on the same network?

Accepted Answer

overlay

Answer

The overlay network driver creates a distributed network spanning multiple Docker daemons, enabling containers on different hosts to communicate securely.

(LCA) Certified Linux Administrator Practice Test

(LCA) Certified Linux Administrator Practice Test

LCA Cloud Integration & Deployment 4