Does Basis administration involve the J2EE and ABAP engines?

I'm confused about what Basis administration entails. Does it involve the J2EE and ABAP engines? Please help me sort out my confusion.

Yes, Basis administration does involve the J2EE and ABAP engines, but not necessarily both at once. The most common is the administration of the Web Application Server (Web AS ABAP system). The J2EE applies to environments where Web development takes place.

As the Basis (technical) administrator you need to install, configure and maintain just about every aspect of the system architecture. For information about J2EE please visit this link: http://help.sap.com/saphelp_47x200/helpdata/en/13/a3bb3eff62847ae10000000a114084/frameset.htm.