True

False

VC-12 time slot 1 and 2 for the first VC4

VC-12 time slots for the second VC4 33 and 34

VC-12 time slots 1 and 2 for the fourth VC4

VC-12 Time slots 1 and 2 for the 8th VC-4

TRUE

FALSE

cross-connect board checks the PQ1 board fault through the board status bus. .

If the protection PQ1 board is normal, the cross-connection board sends a switching message to the D75S corresponding to the faulty PQ1 board through the switching control bus. .

The D75S board responds to the switch message by transmitting the service to the shared protection bus and stopping sending the service to the tyrant PQ1 board

The protection PQ1 board receives and processes the services transmitted from the D75S board to the protection bus to complete the protection switching

9*9*4

9*8"4

9*9*8

9*8

E1

E2

E1 and E2

Not above

The internal clock source has the lowest priority due to low accuracy.

Typically, a branch clock is not used as a clock source for a device.

Select the same SSM co-editor for all NE in the clock protection subnet

If the difficultY SSM protocol is enabled, you need to set the clock source ID to correct the answer.