H31-311 Online Practice Questions and Answers

OTM nr.m consists of a maximum of "n" optical multiplexing channels and does not support non-channelassociated overheads. The letter "r" indicates function reduction.

A. TRUE

B. FALSE

On the OSN series transport devices, Ethernet ports cannot access tagged frames and untagged frames at the same time.

A. TRUE

B. FALSE

Forced switching, fiber cut switching, manual switching, and exercise switching are in the descending order of priority.

A. TRUE

B. FALSE

Which of the following bytes can be used for the orderwire phone between two REG devices?

A. E1

B. E2

C. E1 and E2

D. None of the above

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)

Which of the following communication protocols are used for DCN management on Huawei devices? (Multiple Choice)

A. HWECC

B. TCP/IP

C. PTP

D. OSI

Which of the following alarm/event dumping modes are supported by the U2000? (Multiple Choice)

A. Manual dumping

B. Automatic dumping

C. Overflow dumping

D. Periodic dumping of alarm logs

Which of the following factors determines that the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent After signals are transmitted for a certain distance in a WDM system, the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent. Which of the following is the main cause?

A. EDFAs are used.

B. Multiplexers and demultiplexers are used.

C. New types of optical fibers are not used.

D. Fiber attenuation is excessively high.

In MSP networking, when optical fibers are connected between sites, the east optical board of a site is connected to the west optical board of the downstream site, and these sites are connected in sequence to form a ring. In this case, the direction from the east optical board of a site to the west optical board of the downstream site is the major ring direction, and the direction that the ring is formed is the service direction.

A. TRUE

B. FALSE

An arrayed waveguide grating (AWG) multiplexer/demultiplexer has the following advantages: short wavelength spacing, large number of channels, and flat passband. It suits DWDM systems with ultra-high speed and large capacity.

A. TRUE

B. FALSE