DCA LATEST BRAINDUMPS FREE | EXAM DCA TUTORIALS

DCA Latest Braindumps Free | Exam DCA Tutorials

DCA Latest Braindumps Free | Exam DCA Tutorials

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Docker Certified Associate (DCA) Exam Sample Questions (Q160-Q165):

NEW QUESTION # 160
Will this command list all nodes in a swarm cluster from the command line?
Solution. 'docker inspect nodes

  • A. Yes
  • B. No

Answer: B

Explanation:
= The command docker inspect nodes will not list all nodes in a swarm cluster from the command line. This command is invalid, as docker inspect requires one or more object names or IDs as arguments1. To list all nodes in a swarm cluster, you need to use the docker node ls command from a manager node2. This command will display the ID, hostname, status, availability, manager status, and engine version of each node in the swarm2. You can also use the -f or --filter flag to filter the nodes by various criteria, such as role, label, or name2. Reference:
1: docker inspect | Docker Docs
2: docker node ls | Docker Docs


NEW QUESTION # 161
Will a DTR security scan detect this?
Solution.private keys copied to the image

  • A. No
  • B. Yes

Answer: B

Explanation:
Explanation
= A DTR security scan will detect private keys copied to the image. DTR security scan is a feature of Docker Trusted Registry (DTR) that scans images to detect any security vulnerability1. DTR security scan uses the open source tool SecretScanner2 to find unprotected secrets in container images or file systems. SecretScanner can match the contents of images against a database of approximately 140 secret types, including private keys3. Therefore, if an image contains private keys, DTR security scan will report them as potential secrets and alert the user to remove them from the image. References:
* Scan images for vulnerabilities | Docker Docs
* GitHub - deepfence/SecretScanner: :unlock: Find secrets and passwords ...
* SecretScanner/deepfence_secret_scanner.py at main deepfence/SecretScanner


NEW QUESTION # 162
Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution: Uninstall 'docker-ce' package before installing 'docker-ee' package.

  • A. Yes
  • B. No

Answer: B

Explanation:
= Uninstalling the 'docker-ce' package before installing the 'docker-ee' package will not upgrade Docker Engine CE to Docker Engine EE. It will only remove the existing Docker Engine CE installation and install a new Docker Engine EE installation. This means that any existing containers, images, volumes, networks, and other Docker resources will be lost. To upgrade Docker Engine CE to Docker Engine EE without losing any data, youneed to use the migration tool provided by Docker1 or follow the steps described in the Docker documentation2 or other online guides34. Reference:
1: Migrate to Engine 1.10 | Docker Docs
2: Install Docker Engine | Docker Docs
3: Switching Docker 18.09 Community Edition to Enterprise Engine with no ...
4: How to upgrade Docker 18.09 Community Edition to Docker Enterprise 18.09


NEW QUESTION # 163
Is this the purpose of Docker Content Trust?
Solution: Verify and encrypt Docker registry TLS.

  • A. No
  • B. Yes

Answer: B


NEW QUESTION # 164
The Kubernetes yaml shown below describes a networkPolicy.

Will the networkPolicy BLOCK this trafftc?
Solution. a request issued from a pod bearing the tier: api label, to a pod bearing the tier: backend label

  • A. Yes
  • B. No

Answer: B

Explanation:
The provided Kubernetes NetworkPolicy YAML configuration indicates that the policy applies to pods with the label tier: backend in the default namespace1. The ingress rule allows traffic from pods with the label tier:
api1. Therefore, a request issued from a pod bearing the tier: api label to a pod bearing the tier: backend label will not be blocked by this networkPolicy1. This is because the networkPolicy explicitly allows ingress from pods with the tier: api label1. For more information on Kubernetes Network


NEW QUESTION # 165
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