Refer to the exhibit.
Video Source S is sending interactive video traffic to Video Receiver R. Router R1 has multiple
routing table entries for destination R. Which load-balancing mechanism on R1 can cause out-oforder video traffic to be received by destination R?
A.
per-flow load balancing on R1 for destination R
B.
per-source-destination pair load balancing on R1 for destination R
C.
CEF load balancing on R1 for destination R
D.
per-packet load balancing on R1 for destination R
Per-packet load balancing can cause packets of the same flow, from the same source to destination (in the same session) to go over different equal-cost links. Thus, if one link is more congested than the other, the packets can arrive at the destination out of order.