Configuration of Publication, Sites and Subscription : Question from Base customizing exam

Configuration of Publication, Sites and Subscription
Before we jump to the configuration of each of the Sites, Publication and Subscription, it is important to conceptually understand as what exactly each entity means and the relationship between them.
Systems which are involved in the exchange of data are called sites. A site can be the very own CRM System or R/3 system or BW System. We have to configure all the sites that are involved in the data exchange. Each site can act as a source site or target site or it can act as both in case of two way data exchange.
A Publication is logical congregation or set of data e.g. Business Partners, Business Partner Relationships, Campaigns, Conditions etc. Each publication has replication object (which is generated from and represents a particular BDoc type) assigned to it which determines the data which shall be exchanged.
Finally, an assignment of a Publication to a particular Site is a Subscription.
The activity of configuration of each of these entities can be done in the Administration Console. The Administration Console can be called from transaction SMOEAC.