Which of the following are true when using environment directives In a Declarative Pipelined?

If an environment variable b enclosed In single quotes, the Pipeline DSL dereferences the variable on the master's JVM and passes the calculated string to the sh or bat step; If the environment variable Is enclosed In double quotes, the name of the environment variable Itself Is passed to the "sh" or "baT step and the she! Interpreter on the agent dereferences the variable.
An environment variable can be specified globally (to apply to all steps In the pipeline), for an individual step, or for one or more specified steps In the Pipeline.
If an environment variable Is enclosed In double quotes, the Pipeline DSL dereferences the variable on the master's JVM and passes the calculated string to the sh or bat step; If the environment variable Is enclosed In single quotes, the name of the environment variable Itself Is passed to the "sh" or "bat" step and the shell Interpreter on the agent dereferences the variable.
A Declarative Pipeline can use environment variables defined in Jenkins itself (such as BUILNUMBER and JENKINS_URL), environment variables defined in an installed plugin (such as GIT_COMMIT or GIT.BRANCH, defined m the Git plugin), or environment variables that are coded as directives In the Pipeline Itself: the semantics are identical for all environment variables.

Answer(s): A,C,D

Which is the expected workflow for "Test-Driven Development"?

Write a new fating unit test, write the new functional code to fix the test, verify that the test passes, and then refactor the code.
Write a new test, validate with the CI system, and then write the new functional code.
Validate with the G system, write the new functional code, and then verify that the test passes.
Write a new failing unit test, write the new functional code to fix the test, and then verify that the test passes.

Answer(s): A

Which are supported I dilute Modes in the Cluster Operations Job type? Choose 3 answers

Answer(s): A,C,D

Which are direct benefits of using the CloudBees Core Operations Center? Choose 2 answers

Operations Center enables you to interconnect different CI systems, such as CloudBees CodeShip and Jenkins
It is easier to share resources among Jenkins masters that are connected to the same Operations Center.
It is easier to run Pipelines on the Operations Center because it can retrieve resources from all connected masters.
Operations Center handles the build toad more efficiently by scheduling tasks on idle Jenkins masters.
It Is easier to perform administration tasks (such as upgrading a plugin) on a group of masters that are attached to the same Operations Center.

Answer(s): A,D

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