The Kl and K2 bytes can transmit APS switching signaling, and can also indicate that the multiplex section signal fails.
A. TRUE
B. FALSE
When the SXCS board is configured for an OSN 3500, which of the following is the access capacity of the subrack in full configuration?
A. 35G
B. 58.75G
C. 80G
D. 155G
Optical fiber loss includes the bending loss, absorption loss, and scattering loss.
A. TRUE
B. FALSE
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board.
B. The APS-INDI alarm is reported on the XCS board.
C. The APS-INDI alarm is reported on the system control board.
D. The APS-INDI alarm is reported on the line board.
In the frame structure of SDH signals, there are abundant overhead bytes used for operation, administration, and maintenance (OAM). The overhead bytes account for ( ) of all bits in the entire frame and greatly enhance the monitoring functions of the network.
A. 1/10
B. 1/20
C. 1/30
D. 1/40
The U2000 can be flexibly interconnected with different third-party NMSs through northbound interfaces (NBIs), and provides information about physical inventory and alarms to the upper-layer NMSs.
A. TRUE
B. FALSE
The single-fiber bidirectional WDM system uses only one optical fiber to transmit optical signals in two directions at the same time. The optical signals in the two directions should be arranged at different wavelengths.
A. TRUE
B. FALSE
The working mode of a port determines the flow control mode of the port. When the working mode is 100 Mbit/s full duplex, which of the following flow control modes can be used?
A. Auto-negotiation flow control mode
B. Non-auto-negotiation flow control mode
C. Both of the above
D. None of the above
The STM-64 has () AU pointers.
A. 64
B. 1
C. 4
D. 16
Which of the following logical functional modules are involved in processing clock signal? (Multiple Choice)
A. SPI
B. RST
C. MCF
D. SETS
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