Which three SONET network elements are used for troubleshooting? (Choose three.)
A.
line
B.
path
C.
circuit
D.
section
E.
segment
Explanation:
Section, line, and path errors occur over different spans of the SONET network and between different pieces of
equipment.
http://www.juniper.net/documentation/en_US/junos15.1/topics/topic-map/sonet-interfaces-alarmsand-errors.html