Segment of Runtime tab of the Explorer window showing the Server Registry, its Default Servers subnode, and its Installed Servers subnode. Under the Default Servers subnode, the default application server is labeled J2EE Applications: server1(localhost:80) and the default web server is labeled Web Tier Applications: server1(localhost:80). Under the Installed Servers subnode is a subnode, which is the representative of the admin server. It is labeled localhost:4848. Under that node is the application server instance node, labeled server1(localhost:80).