Test: SONET

synchronous optical network

synchronous operational network

stream optical network

shell operational network

51.84 Mbps

155.52 Mbps

466.56 Mbps

none of the mentioned

from its optical source to its optical destination

across a physical line

across a physical section

none of the mentioned

network layer

data link layer

physical layer

none of the mentioned

2000 frames

4000 frames

8000 frames

16000 frames

frames of lower rate can be synchronously time-division multiplexed into a higher-rate frame

multiplexing is synchronous TDM

all clocks in the network are locked to a master clock

none of the mentioned

point-to-point

multi-point

both (a) and (b)

none of the mentioned 

line layer

section layer

photonic layer

path layer

one ring

two rings

three rings

four rings

sdh is similar standard to SONET developed by ITU-T

synchronous digital hierarchy

both (a) and (b)

none of the mentioned