Free DCA Braindumps Download Updated on Jan 13, 2022 with 170 Questions
Docker DCA Exam Practice Test Questions
What is the duration, language, and format of Docker Certified Associate Exam
- Length of Examination: 90 mins
- Type of Questions: Multiple choice, Multiple answers
- Number of Questions: 55
- Passing score: 65%
- language: English
For more info read reference:
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The benefit of obtaining the Docker Certified Associate Exam Certification
DCA Certifications provide opportunities to get a job easily in which they are interested in instead of wasting years and ending without getting any experience.
DCA credential delivers higher earning potential and increased promotion opportunities because it shows a good understanding of Docker containerization technology.
This accreditation is a portable proof of skills in containerization technology.
This certification will be judging your skills and knowledge on your understanding of Docker containerization technology concepts & Understanding of how to operate on Docker.
DCA Exam provide proven knowledge to use the tools to complete the task efficiently and cost-effectively than the other non-certified professionals lack in doing so.
NEW QUESTION 86
Is this the purpose of Docker Content Trust?
Solution: Verify and encrypt Docker registry TLS.
- A. No
- B. Yes
Answer: B
NEW QUESTION 87
Which 'docker run' flag lifts cgroup limitations?
- A. 'docker run --isolation'
- B. 'docker run --cpu-period'
- C. 'docker run --privileged'
- D. 'docker run --cap-drop'
Answer: C
NEW QUESTION 88
You want to provide a configuration file to a container at runtime. Does this set of Kubernetes tools and steps accomplish this?
Solution: Mount the configuration file directly into the appropriate pod and container using the .spec.containers.configMounts key.
- A. No
- B. Yes
Answer: A
NEW QUESTION 89
Is this a type of Linux kernel namespace that provides container isolation?
Solution: Authentication
- A. No
- B. Yes
Answer: B
NEW QUESTION 90
Which of the following commands starts a Redis container and configures it to always restart unless it is
explicitly stopped or Docker is restarted?
- A. 'docker run -d --restart omit-stopped redis'
- B. 'docker run -d --failure omit-stopped redis'
- C. 'docker run -d --restart unless-stopped redis'
- D. 'docker run -d --restart-policy unless-stopped redis'
Answer: C
NEW QUESTION 91
The output of which command can be used to find the architecture and operating system an image is
compatible with?
- A. docker image ls <image-id>
- B. docker image inspect --filter {{.Architecture}} {{.OS}} ' <image-id>
- C. docker image inspect --format {{.Architecture}} {{.OS}} ' <image-id>
- D. docker image info <image-id>
Answer: C
NEW QUESTION 92
Which statement is true?
- A. ENTRYPOINT cannot be overriden in the "docker container run" command
- B. ENTRYPOINT cannot be used in conjuction with CMD
- C. CMD is used to run the software is the image along with any arguments
- D. CMD shell format uses this form ["param", param", "param"]
Answer: D
NEW QUESTION 93
Will this command display a list of volumes for a specific container?
Solution: docker volume inspect nginx'
- A. No
- B. Yes
Answer: A
NEW QUESTION 94
A host machine has four CPUs available and two running containers. The sysadmin would like to assign two CPUs to each container.
Which of the following commands achieves this?
- A. Set the '--cpuset-cpus' flag to '.5' on both containers
- B. Set the '--cpuset-cpu's flag to '1.3' on one container and '2.4' on the other container.
- C. Set the '--cpu-quota' flag to '1.3' on one container and '2,4' on the other container.
- D. Set the '--cpuset-cpus' flag of the 'dockerd' process to the value 'even-spread'
Answer: A
NEW QUESTION 95
Does this describe the role of Control Groups (cgroups) when used with a Docker container?
Solution: role-based access control to clustered resources
- A. No
- B. Yes
Answer: A
NEW QUESTION 96
Is this a Linux kernel namespace that is disabled by default and must be enabled at Docker engine runtime to be used?
Solution: net
- A. No
- B. Yes
Answer: A
NEW QUESTION 97
A Kubernetes node is allocated a /26 CIDR block (64 unique IPs) for its address space.
If every pod on this node has exactly two containers in it, how many pods can this address space support on this node?
- A. 32 In every Kubernetes namespace
- B. 64 for every service routing to pods on this node
- C. 0
- D. 1
Answer: B
NEW QUESTION 98
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: node taints
- A. No
- B. Yes
Answer: A
NEW QUESTION 99
You want to provide a configuration file to a container at runtime. Does this set of Kubernetes tools and steps accomplish this?
Solution: Turn the configuration file into a configMap object, use it to populate a volume associated with the pod, and mount that file from the volume to the appropriate container and path.
- A. No
- B. Yes
Answer: B
NEW QUESTION 100
A docker service 'web' is running with a scale factor of 1 (replicas = 1).
Bob intends to use the command 'docker service update --replicas=3 web'.
Alice intends to use the command 'docker service scale web=3'.
How do the outcomes oft these two commands differ?
- A. Bob's command updates the number of replicas of the 'web' service to 3. Alice's command results in an error.
- B. Bob's command only updates the service definition, but no new replicas are started. Alice's command results in the actual scaling up of the 'web' service.
- C. Bob's command results in an error. Alice's command updates the number of replicas of the 'web' service to 3.
- D. Both Bob's and Alice's commands result in exactly the same outcome, which is 3 instances of the 'web' service.
Answer: D
NEW QUESTION 101
Following the principle of least privilege, which of the following methods can be used to securely grnt access to the specific user to communicate to a Docker engine? (Choose two.)
- A. Add the user to the 'docker' group on the server or specify the groue with the '--group' Docker daemon option.
- B. Utilize openssl to create TLS client and server certificates, configuring the Docker engine to use with mutual TLS over TCP.
- C. Utilize the '--host 0.0.0.0:2375' option to the Docker daemon to listen on port 2375 over TCP on all interfaces
- D. Give the user root access to the server to allow them to run Docker commands as root.
- E. Utilize the '--host 127.0.0.1:2375' option to the Docker daemon to listen on port 2375 over TCP on localhost
Answer: A,B
NEW QUESTION 102
Which one of the following commands will result in the volume being removed automatically once the container has exited?
- A. 'docker run --rm -v /foo busybox'
- B. 'docker run --del -v /foo busybox'
- C. 'docker run --read-only -v /foo busybox'
- D. 'docker run --remove -v /foo busybox'
Answer: A
NEW QUESTION 103
Will this command ensure that overlay traffic between service tasks is encrypted?
Solution: docker network create -d overlay --secure
- A. No
- B. Yes
Answer: A
NEW QUESTION 104
In the context of a swarm mode cluster, does this describe a node?
Solution: a physical machine participating in the swarm
- A. No
- B. Yes
Answer: A
NEW QUESTION 105
Will this configuration achieve fault tolerance for managers in a swarm?
Solution: only two managers, one active and one passive.
- A. No
- B. Yes
Answer: A
NEW QUESTION 106
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 --service udp dns-cache
- B. docker service create --name dns-cache -p 53:53/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
Answer: B
NEW QUESTION 107
You want to create a container that is reachable from its host's network. Does this action accomplish this?
Solution: Use --link to access the container on the bridge network.
- A. No
- B. Yes
Answer: A
NEW QUESTION 108
What service mode is used to deploy a single task of a service to each node?
- A. universal
- B. replicated
- C. spread
- D. global
- E. distributed
Answer: D
NEW QUESTION 109
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