Which of the following performance optimization techniques would be MOST beneficial for a network-wide
VoIP setup? (Select TWO).

A.
Proxy server
B.
Traffic shaping
C.
Caching engines
D.
Load balancing
E.
Quality of service
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proxy server is restrictive
caching engines reduces overall traffic in the network but not specifically
load balancing takes several servers and makes them look like 1
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