Exam AZ-400 topic 7 question 77 discussion

D. Correct , Container instances are cost effective

Agree with answer

Answer is D, but not the only one. The question does not specify what pool Pipe2 is using. For the sake of costs, containers are the cheapest approach

D is the answer. https://learn.microsoft.com/en-us/azure/devops/pipelines/process/container-phases?view=azure-devops On Linux and Windows agents, jobs may be run on the host or in a container. (On macOS and Red Hat Enterprise Linux 6, container jobs are not available.) Containers provide isolation from the host and allow you to pin specific versions of tools and dependencies. Host jobs require less initial setup and infrastructure to maintain. Containers offer a lightweight abstraction over the host operating system. You can select the exact versions of operating systems, tools, and dependencies that your build requires. When you specify a container in your pipeline, the agent will first fetch and start the container. Then, each step of the job will run inside the container. You can't have nested containers. Containers aren't supported when an agent is already running inside a container.

D. Create two container jobs. By creating two container jobs, each build pipeline can run in its own isolated environment, without conflicting with each other. This can help to minimize the possibility of conflicts between the two applications, while also minimizing infrastructure costs, as the self-hosted agent can be used for both projects. Adding another self-hosted agent would increase infrastructure costs, while changing the self-hosted agent to use RHEL 8 may not necessarily solve the dependency conflict. Adding a Docker Compose task would not necessarily isolate the two build pipelines.

Can someone please explain how B is wrong? I was thinking it is also related to creating containers for the 2 apps with different dependencies

It doesnt even state what pool project 2 uses. Answer is A.

"minimize infrastructure costs" Answer is D

D is correct answer (however A is also correct but more expensive if on-prem infra costs are taken into account. Keep in mind if question asks for least amount of admin overhead though)

D. Create two container jobs. (A is correct but cost)

Selected during exam. D. Create two container jobs.

D is correct because it is the most cost effective

A is also good but cost. D is cost effective

I like C, though incorrect!