Answer:
Recursion is calling of a function from within that same function
Answer: Internet service provider
Explanation:
Answer: Site Link
Explanation: Site link is the type connection that is created for the different sites.It helps in the connectivity in the multiple site surrounding known as inter-site and transferring the traffic created by the replication activity.
Other options are incorrect because bridgehead servers is a device to control the domain,subnet is the part of the IP network and domain is used for the identification of address .Thus, the correct option is site link.