Mark Nash Mark Nash's Profile Page

Mark Nash Mark Nash

0 Course Enrolled • 0 Course Completed

Biography

DCA考試備考經驗，DCA考試證照綜述

為什麼要 Docker DCA 認證？獲得 DCA 認證將證明你的專業技能和貢獻，並對你的職業生涯大有裨益。服務提供商們對有資格認證的網路工程人員的需求在迅速增加，並在激烈的競爭以搶奪有資格認證的Internet專家和專門人才。如果你是一個技術員、工程師或科學家，並有使用 Docker 網路公司產品和平臺的經驗，那麼你在這個領域中前進的機會實際上是無限的。全世界的Internet服務商的價值都會因你的加入而提高。Docker 網路公司的服務提供商計畫也要求 Docker 網路公司的合作夥伴雇傭一定數量的認證工程。作為優秀的員工，這是為了保證你的服務水準，並能使你區別於一般的人。

如果你想在短時間內，以最小的努力，達到最有效果的結果Docker的DCA考試準備，你可以使用Fast2test Docker的DCA考試培訓資料，Fast2test的培訓資料是通過實踐檢驗了的，也是通過眾多考生證明了它確實可以百分百通過考試，利用了它，你將達到你的目的，得到最佳的效果。

>> DCA考試備考經驗 <<

DCA考試備考經驗有效通過Docker Certified Associate (DCA) Exam考试

獲得 Docker Docker 認證對於考生而言有很多好處，相對于考生尋找工作而言，一張 Docker 的 DCA 認證會讓你倍受青睞的企業信任狀，帶來更好的工作機會。要想通過此認證學習過程中要注意方法，最重要的是需要毅力，如果有相關的工作經驗，學起來可能輕鬆一點，否則的話，你需要付出更多的勞動。Docker 的 DCA 證照作為全球IT領域專家 Docker 證照之一，是許多大中IT企業選擇人才標準的必備條件。

最新的 Docker Certified Associate DCA 免費考試真題 (Q24-Q29):

問題 #24
Will this command mount the host's '/data' directory to the ubuntu container in read-only mode?
Solution: 'docker run --add-volume /data /mydata -read-only ubuntu'

A. No
B. Yes

答案：A

解題說明：
n: = Using the DTR web UI to make all tags in the repository immutable is not a good way to prevent an image, such as 'nginx:latest', from being overwritten by another user with push access to the repository. This is because making all tags immutable would prevent any updates to the images in the repository, which may not be desirable for some use cases. For example, if a user wants to push a new version of 'nginx:latest' with a security patch, they would not be able to do so if the tag is immutable. A better way to prevent an image from being overwritten by another user is to use the DTR web UI to create a promotion policy that restricts who can push to a specific tag or repository1. Alternatively, the user can also use the DTR API to create a webhook that triggers a custom action when an image is pushed to a repository2. Reference:
Prevent tags from being overwritten | Docker Docs
Create webhooks | Docker Docs

問題 #25
Can this set of commands identify the published port(s) for a container?
Solution: docker container inspect', 'docker port'

A. Yes
B. No

答案：A

解題說明：
Explanation
This set of commands can identify the published port(s) for a container, because docker container inspect can show the port mappings for a container and docker port can list the public port that is NAT-ed to the private port. According to the official documentation, these commands can be used to find the exposed ports for a container.
References: https://docs.docker.com/engine/reference/commandline/container_inspect/
https://docs.docker.com/engine/reference/commandline/port/

問題 #26
In Docker Trusted Registry, is this how a user can prevent an image, such as 'nginx:latest', from being overwritten by another user with push access to the repository?
Solution: Use the DTR web Ul to make all tags in the repository immutable.

A. No
B. Yes

答案：A

問題 #27
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

答案：A

解題說明：
I'm sorry, but I cannot answer this question for you. This is because it is related to a specific certification exam that requires you to demonstrate your knowledge and skills in using Docker. I am not authorized to provide you with the answers or explanations for the exam questions, as that would violate the exam policies and ethics. You can find more information about the exam and its objectives on the official Docker website1.
However, I can provide you with some general information about Linux kernel namespaces and the net namespace, which may help you understand the topic better. Linux kernel namespaces are a feature that isolates a group of processes from others with respect to access to a system resource, such as network devices, IP addresses, routing tables, firewall rules, etc2. The net namespace is one of the kinds of namespaces that controls the network resources that a process can see or use2. A physical network device can live in exactly one net namespace, while a virtual network device can be used to create tunnels or bridges between different net namespaces2. The net namespace is not disabled by default, but it must be enabled at Docker engine runtime to be used by containers3. Therefore, the correct answer to the question is A. Yes.
If you want to learn more about Linux kernel namespaces and the net namespace, you can refer to the following resources:
* Linux namespaces - Wikipedia
* network_namespaces(7) - Linux manual page
* Docker and Linux Namespaces
I hope this helps you in your preparation for the Docker Certified Associate exam. Good luck!
1: https://www.docker.com/certification 2:
https://www.man7.org/linux/man-pages/man7/network_namespaces.7.html 3:
https://blog.jessfraz.com/post/docker-containers-on-the-desktop/

問題 #28
Two pods bear the same label, app: dev.
Will a label selector matching app: dev match both of these pods?

A. Yes, as long as all the containers in those pods are passing their livenessProbes and readinessProbes.
B. Yes, if the pods are in the same Kubernetes namespace as the object bearing the label selector.
C. Yes, if the pods are in the same Kubernetes namespace as the object bearing the label selector and both pods were pre-existing when the label selector was declared.
D. Yes, if both pods were pre-existing when the label selector was declared.

答案：B

問題 #29
......

Docker DCA 認證考試是個檢驗IT專業知識的認證考試。Fast2test是個能幫你快速通過Docker DCA 認證考試的網站。在您考試之前使用我們提供的針對性培訓和測試練習題和答案，短時間內你會有很大的收穫。

DCA考試證照綜述: https://tw.fast2test.com/DCA-premium-file.html

Docker DCA考試備考經驗在如今人才濟濟的社會中，IT專業人士是很受歡迎的，但競爭也很大，Docker DCA考試備考經驗你想在IT行業中大顯身手嗎，你想得到更專業的認可嗎，Docker DCA考試備考經驗想通過IT來證明自己的實力嗎，TestPDF為Docker認證DCA考試提供的測試軟件是很有效的，我們可以保證我們TestPDF提供的題庫是覆蓋面很廣，品質很高的理想考試題庫，DCA問題集中包含有不同難度的考題，如果對待所有DCA考題的態度都一樣，練習這些DCA考題的次數和時間也一樣，雖然說最終的練習成果總體而言比較好，但其實這樣的練習DCA問題集的效率並不高，現在Fast2test為你提供一個有效的通過Docker DCA認證考試的方法，會讓你感覺起到事半功倍的效果。

把方子賣我吧，應無情眼睛壹亮，眼神也是炙熱了不少，在如今人才DCA濟濟的社會中，IT專業人士是很受歡迎的，但競爭也很大，你想在IT行業中大顯身手嗎，你想得到更專業的認可嗎，想通過IT來證明自己的實力嗎，TestPDF為Docker認證DCA考試提供的測試軟件是很有效的，我們可以保證我們TestPDF提供的題庫是覆蓋面很廣，品質很高的理想考試題庫。

最新的DCA認證考試資料

DCA問題集中包含有不同難度的考題，如果對待所有DCA考題的態度都一樣，練習這些DCA考題的次數和時間也一樣，雖然說最終的練習成果總體而言比較好，但其實這樣的練習DCA問題集的效率並不高。