H31-311 Online Practice Questions and Answers

Which of the following methods can be used to multiplex lower-order ODUk to higher-order ODUk?

A. Time division multiplexing

B. Wavelength division multiplexing

C. Space division multiplexing

D. Frequency division multiplexing

Which of the following is not the advantage of WDM?

A. Ultra-large capacity and transparent data transmission

B. Easy to upgrade and maximizing the protection for existing investments

C. Completely substituting for SDH devices

D. Compatible with all optical switching networks in the future

The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.

A. TRUE

B. FALSE

Which of the following is not a non-linear effect?

A. Self-phase modulation (SPM)

B. Dispersion

C. Raman scattering

D. Four-wave mixing (FWM)

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.

The number of 0DU2e signals multiplexed into an 0DU3 signal is the same as that of 0DU2 signals multiplexed into an 0DU3 signal.

A. TRUE

B. FALSE

When the ACT indicator of an SDH board is off, it indicates that this board has a hardware fault and cannot be used,

A. TRUE

B. FALSE

When LMSP is configured, there are two switching modes: single-ended switching and dual-ended switching. The protection protocol does not need to be enabled for single-ended switching.

A. TRUE

B. FALSE

EPL services exclusively use ports and bandwidths, and different users may need to share resources. Which of the following methods can be used to isolate user data?

A. VLANID

B. MPLS label

C. QinQ technology

D. All of the above

The value of the MFAS byte increases with the sequence number of the OTUk/ODUk base frame, and a maximum of ( ) base frames are included.

A. 64

B. 128

C. 256

D. 512