SONET/SDH applies ________ when there is a break in a trunk line between switches.
A) the Spanning Tree Protocol
B) wrapping
C) half-duplex transmission
D) full-duplex transmission
Correct Answer:
Verified
Q12: For PBXs,camp-on is _.
A)a user service
B)an attendant
Q13: SONET/SDH uses a _ topology.
A)point-to-point
B)hierarchy
C)mesh
D)ring
Q14: Cross-connect devices are found in _.
A)PBXs
B)equipment rooms
C)telecommunications
Q15: In data wiring,there need to be four
Q16: For PBXs,call forwarding is _.
A)a user service
B)an
Q18: Plenum wiring is needed for _.
A)heavy traffic
Q19: Which of the following is good for
Q20: In telephone wiring,there need to be four
Q21: For PBXs,call detail reporting is _.
A)a user
Q22: Deregulation is the highest for _.
A)customer premises
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