1. Name one of the pillars of Extreme Programming.
2. What file is used to describe jobs and pipelines?
3. How does a build system know when to build software in a pipeline?
4. What tests are necessary for reaching the integration phase?
5. Which tag is used in the .gitlab-ci.yml file to execute a job?
6. What is the name of the configuration file used by the runner?
7. How many concurrent sessions can a runner start?
8. How can you get metrics about the execution of a GitLab runner?