Independent of the consent behavior, Google Consent Mode can be deployed on a site in one of two methods - a Basic or Advanced deployment. With a Basic deployment (also known as Zero-Cookie load), Google Tags are not fired until the user opts in. With an Advanced deployment (also known as Standard load), Google tags send cookieless pings until consent is given; please check this link for more information. The deployment strategy depends on the value of the Consent Model API (Opt-in or Opt-out), which can be configured per country or state in the Consent Manager (CM) settings. It should be mapped in the template under the configuration Implied Consent Settings.
TrustArc · Google Consent Mode · https://trustarc.com/