In Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â systems, resources are allocated on demand.

In Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

1.	In Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â systems, resources are allocated on demand.
A.	packet switching
B.	circuit switching
C.	line switching
D.	frequency switching
Answer» B. circuit switching