DCA Practice Test

If installing Docker using devicemapper for storage with the Intent to run production workloads, how should devicemapper be configured

A.

direct-lvm

B.

loop-lvm

C.

overlay-lvm

D.

aufs-lvm

Which set of commands can identify the publishd port(s) for a container? (Choose 1.)

A.

'docker port inspect', 'docker container inspect'

B.

'docker container inspect', docker port'

C.

'docker info','docker network inspect'

D.

'docker network inspect','docker port'

Which of the following modes can be used for service discovery of a Docker swarm service (Pick 2 correct answers)

A.

Virtual IP (VIP) with --endpoint-mode vip

B.

Overlay with --endpoint-mode overlay

C.

DNS Round-Robin with --endpoint-mode dnsrr

D.

Ingress with --endpoint-mode ingress

E.

Network Address Translation(NAT) with --endpoint-mode nat

Which of the following commands will ensure that overlay traffic between service tasks is encrypted?

A.

docker service create --network <network-name> --secure <service-name>

B.

docker network create -d overlay --secure <network-name>

C.

docker network create -d overlay -o encrypted=true <network-name>

D.

docker service create --network <network-name> --encrypted <service-name>

Which of the following commands will create a swarm service which only listens on port 53 using the UDP protocol?

A.

docker service create --name dns-cache -p 53:53/udp dns-cache

B.

docker service create --name dns-cache -p 53:53 --service udp dns-cache

C.

docker service create --name dns-cache -p 53:53 ..constraint
networking.protocol.udp=true dns-cache

D.

docker service create --name dns-cache -p 53:53 --udp dns-cache