What is the preferred method for a Jenkins administrator to notify nil Jenkins users about upcoming system maintenance?

Add text to the "System Message" field on the "System Configuration" page to populate a banner displayed across the top of the master's home page.
On the "System Configuration" page, choose the "Maintenance Alerts" option from the "Alerts" dropdown menu and populate the box with a message to be added to all build logs.
Populate the "Email Notifications" section of the "System Configuration" page with a message to be sent as email to all registered Jenkins users.
On the master's dashboard, dick "add description" or "edit description" to populate a banner displayed across the top of the master's home page.

Answer(s): B

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

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

Answer(s): C