Which two statements about IPv4 multicast traffic are true? (Choose two.)

Question:
Which two statements about IPv4 multicast traffic are true? (Choose two.)

• It burdens the source host without affecting remote hosts.
• It uses a minimum amount of network bandwidth.
• It is bandwidth-intensive.
• It simultaneously delivers multiple streams of data.
• It is the most efficient way to deliver data to multiple receivers.

Explanation: http://www.cisco.com/c/dam/en_us/about/ciscoitatwork/downloads/ciscoitatwork/pdf/cisco_it_case_study_multicast.pdf
Cisco IOS IP Multicast in the Cisco Network
“IP Multicast as defined in RFC1112, the standard for IP Multicast across networks and the Internet, supports one-to-many content needs by delivering application-source traffic to multiple users without burdening the source or the network, using a minimum amount of network bandwidth. At the point where paths diverge, Cisco routers replace IP Multicast packets in the network, resulting in the most efficient delivery of data to multiple receivers.”
Even low-bandwidth applications can benefit fro IP Multicast when there are thousands of receivers. High-bandwidth applications, such as MPEG video, may need a large portion of the available network bandwidth for a
single stream. In these applications, IP Multicast is the only way to efficiently send the same content to more than one
receiver simultaneously, because it makes sure that only one copy of the data stream is sent across any one network
link. It relies on each router in the stream to intelligently copy the data stream whenever it needs to deliver it to
multiple receivers.

Exam with this question: CCNA v3.0 (200-125) Study Guide – Exam Dumps