單項(xiàng)選擇題A customer has 2 DS1s to add between adjacent nodes in a UPSR ring. What type of circuit should you recommend?()

A. VT circuits
B. STS circuits
C. VT tunnel circuits
D. 1:1 protection circuits
E. 1:N protection circuits


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2.單項(xiàng)選擇題A customer wants to create a 1:1 protection group with a DS3N-12 card. Which card slots would allow for a 1:1 protection?()

A. Slot 2 and Slot 4
B. Slot 4 and Slot 6
C. Slots 5 or 13 only
D. Slot 16 and Slot 17

5.單項(xiàng)選擇題What is the correct relative switching priority in a BLSR ring (higher to lower)?()

A. signal fail, signal degrade, manual switch
B. signal degrade, signal fail, manual switch
C. protection lockout, manual switch, path AIS
D. forced switch, manual switch, signal degrade
E. protection lockout, manual switch, forced switch