Cisco Exam Questions

Which form of SONET switching requires the exchange of the K1 and K2 bytes between adjacent multiple

Which form of SONET switching requires the exchange of the K1 and K2 bytes between adjacent
multiplexer and/or cross-connect locations for switching to occur properly?

A.
Unidirectional

B.
1+1

C.
Path Level

D.
Line Level

Explanation: