Free Access Docker.DCA.v2022-05-09.q63 Practice Test (Page 2)

Question 1

You are running only Kubernetes workloads on a worker node that requires maintenance, such as installing patches or an OS upgrade
Which command must be run on the node to gracefully terminate all pods on the node, while marking the node as unschedulable?

A.'docker swarm leave'

B.'kubectl cordon <node name>'

C.'kubectl drain <node name>'

D.'docker node update --availability drain <node name>'

Question 2

Which of the following namespaces is disabled by default and must be enabled at Docker engine runtime in order to be used?

A.pid

B.mnt

C.user

D.net

Question 3

Will this command display a list of volumes for a specific container?
Solution: docker container logs nginx --volumes'

A.Yes

B.No

Question 4

What is the difference between a resource limit and a resource reservation when scheduling services?

A.A resource limit is hard limit for your service, while a reservation is used to find a host with adequate
resources for scheduling. Correct

B.A resource limit and a resource reservation can be used interchangeably.

C.A resource limit is a soft limit for your service, while a reservation is hard limit and the docker engine will do its best to keep your service at the limit.

D.A resource limit is used to find a host with adequate resources for scheduling a hard limit for your service, while a reservation is hard limit for your service.

Question 5

A company's security policy specifies that development and production containers must run on separate nodes in a given Swarm cluster.
Can this be used to schedule containers to meet the security policy requirements?
Solution: label contraints