What is the TCP measurement of the delay for a packet to get the receive and then back to the send called?
A.
window size
B.
transit delay
C.
transit window delay
D.
round-trip time
E.
propagation delay
F.
serialization delay
Explanation:
Round-trip time equals a sum of all propagation, processing and queuing delay in the path.
Propagation delay is fixed, processing and queuing delay are unpredictable in best-effort networks.
Reference: Introduction to IP QoS p.7