H31-311 Online Practice Questions and Answers

When the LCAS function is used/ which of the following overhead bytes are used to transmit control information? (Multiple Choice)

A. M1

B. H4

C. K2

D. K4

By default, the B2-EXC alarm is reported when the number of B2 bit errors exceeds the ( ) threshold.

A. 0.000000001

B. 0.00001

C. 0.001

D. 0.01

When synchronization is performed on the 1U2000, the NE data that is the same as that on the U2000 is not uploaded to the U2000, and the data that exists on the U2000 but not on the NE is deleted.

A. TRUE

B. FALSE

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 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

Which of the following are the electrical-layer overheads of OTN? (Multiple Choice)

A. OPUk

B. ODUk

C. OCh

D. OTUk

Which of the following statements about the signal label byte C2 is incorrect?

A. The C2 byte is used to indicate the multiplexing structure of the VC frames and the payload property.

B. The C2 byte to be sent must match the C2 byte to be received.

C. If the C2 byte mismatch is detected, an LP_SLM alarm is reported in the corresponding VC-4 channel.

D. C2=00H indicates that the VC-4 is unequipped.

For the (local) HA solution where the active and standby servers are deployed in the same place, which of the following platforms can be deployed? (Multiple Choice)

A. Windows

B. Solaris

C. SUSE Linux

D. All of the above

In a WDM system, using a dielectric thin film filter (TFF) is ideal when fewer than ( ) wavelengths are used.

A. 4

B. 8

C. 16

D. 20

The backplane has two -48 V power supply cables, and each board obtains two -48 V power supplies from the backplane. After the power supplies are combined by diodes, various voltages required by each component are obtained through the DC/DC power module and linear conversion.

A. TRUE

B. FALSE