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Huawei H31-311 Practice Test - Questions Answers, Page 2

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

A.
Self-phase modulation (SPM)
A.
Self-phase modulation (SPM)
Answers
B.
Dispersion
B.
Dispersion
Answers
C.
Raman scattering
C.
Raman scattering
Answers
D.
Four-wave mixing (FWM)
D.
Four-wave mixing (FWM)
Answers
Suggested answer: B

Which of the following are communication quality alarms? (Multiple Choice)

A.
Optical port loopback
A.
Optical port loopback
Answers
B.
No login of an NE user
B.
No login of an NE user
Answers
C.
NE communication interruption
C.
NE communication interruption
Answers
D.
Loss of optical signals
D.
Loss of optical signals
Answers
Suggested answer: C, D

Which of the following is not the northbound interface provided by the U2000?

A.
XML
A.
XML
Answers
B.
SNMP
B.
SNMP
Answers
C.
CORBA
C.
CORBA
Answers
D.
Qx
D.
Qx
Answers
Suggested answer: D

Which of the following is not the advantage of WDM?

A.
Ultra-large capacity and transparent data transmission
A.
Ultra-large capacity and transparent data transmission
Answers
B.
Easy to upgrade and maximizing the protection for existing investments
B.
Easy to upgrade and maximizing the protection for existing investments
Answers
C.
Completely substituting for SDH devices
C.
Completely substituting for SDH devices
Answers
D.
Compatible with all optical switching networks in the future
D.
Compatible with all optical switching networks in the future
Answers
Suggested answer: C

Which of the following is the function of TCM overheads in ODUk signals?

A.
Channel supervisory overhead
A.
Channel supervisory overhead
Answers
B.
Path trace identifier overhead
B.
Path trace identifier overhead
Answers
C.
Tandem connection monitoring overhead
C.
Tandem connection monitoring overhead
Answers
D.
General communication channel overhead
D.
General communication channel overhead
Answers
Suggested answer: C

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

A.
E1
A.
E1
Answers
B.
E2
B.
E2
Answers
C.
E1 and E2
C.
E1 and E2
Answers
D.
None of the above
D.
None of the above
Answers
Suggested answer: A

The SP3D board supports 63 El services.

A.
TRUE
A.
TRUE
Answers
B.
FALSE
B.
FALSE
Answers
Suggested answer: B

When a fiber cut test is performed on a normal MSP ring, which of the following alarms is reported?

(Multiple Choice)

A.
TU-AIS
A.
TU-AIS
Answers
B.
R-LOS
B.
R-LOS
Answers
C.
APSJNDI
C.
APSJNDI
Answers
D.
BD STATUS
D.
BD STATUS
Answers
Suggested answer: B, C

When a bridge uses the IVL learning mode, the entry in the MAC address table is created according to the source MAC address and source port of the data frame. This entry is valid for all VLANs.

A.
TRUE
A.
TRUE
Answers
B.
FALSE
B.
FALSE
Answers
Suggested answer: B

Compared with a dense wavelength division multiplexing (DWDM) system, a coarse wavelength division multiplexing (CWDM) system provides a certain number of wavelengths and a transmission distance within ( ) km, which greatly reduces system cost and has strong flexibility.

A.
50
A.
50
Answers
B.
100
B.
100
Answers
C.
200
C.
200
Answers
D.
20
D.
20
Answers
Suggested answer: B
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