IP multicasting is a set of technologies that enable efficient delivery of data to many locations
on a network. Rather than making multiple copies of a message intended to be distributed
to multiple recipients at the __(71)__ of origin of a message, multicasting initially sends just
one __(72)__ and does not copy it to the individual recipients until it reaches the closest common point
on the network, thereby __(73)__ the bandwidth consumed. Network performance is significantly
(74) because it isn’t bogged down with the processing and transmission of several large data files;
each receiving computer doesn’t have to __(75)__ the transmitting server for the file.
(71)
A. point
B. bottom
C. head
D. sight
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