What is the acceptable amount of one-way network delay for voice and video applications?

What is the acceptable amount of one-way network delay for voice and video applications?
A . 300 bytes
B . 1 sec
C . 150 ms
D . 500 ms

Answer: C

Explanation:

Delay Components in VoIP Networks

The ITU’s G.I 14 recommendation specifics that the one-way delay between endpoints should not exceed 150 ms to be acceptable, commercial voice quality. In private networks, somewhat longer delays might be acceptable for economic reasons. The ITU G.114 recommendation specifics that 151-ms to 400-ms one-way delay might be acceptable provided that organizations are aware that the transmission time will affect the quality of user applications. One-way delays of above 400 ms are unacceptable for general network planning purposes.