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Huawei H31-311_V2.5 - HCIA-Transmission V2.5

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Total 198 questions

Which of the following is the default WTR time for MSP switching?

A.

6 min

B.

10 minutes

C.

12 min

D.

15 minutes

The clock unit can only access the external clock source as the timing signal source of the system through the external clock interface. In addition; It can also output a processed clock and provide a clock source for other devices that need timing.

A.

True

B.

False

The scope of management of OMSn is the path from the input optical port on the multiplexer unit of the sending site to the output optical port on the multiplexer unit of the receiving site, called the optical multiplexing segment (OMS) path.

A.

True

B.

False

According to the formula "ODUk rate = 239/(239k) x STMN frame rate", ODU4 The rate is equal to 239/235× STMN frame rate.

A.

True

B.

False

Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?

A.

SPI <> RST <> MST <> MSP<> MSA <> HPT

B.

SPI <> RST <> MSA<> MSP<> MST <> HPT

C.

SPI <> MST<> RST <> MSA <> MSP >HPT

D.

SPT<> MS <> MSA<> RST > MSP<> HPT

Which of the following alerts does not trigger an AU-AIS alert?

A.

R-LOS

B.

MS-AIS

C.

AU-LOP ()

D.

B2-ExC

Which of the following statements about the advantages of OTN are incorrect?

A.

WDM function is used to meet the requirements of the bait fiber Tbit/s bandwidth.

B.

OTN provides the final five levels of nested or overlapping TCM connection monitoring.

C.

OTN provides powerful out-of-band FEC functionality to effectively ensure line transmission performance.

D.

0TN provides 2.7 Gbi/s, 10.7Gbt/s, 43Gbt/s and even 111.8 Gbit/s high-speed interfaces.

Array waveguide grating (AWG) multiplexer/multiplexer has the following advantages: short wavelength spacing, large number of channels and flat passband. Suitable for DWDM systems in ultra-high speed, large tubes.

A.

True

B.

False

SDH signals must be scrambled before they can be transmitted over optical fibers. Which of the following bytes is not scrambled? (Multiple choice).

A.

A1

B.

A2

C.

J0

D.

J1

For 100G (112Gbit/s) signals, the actual data baud rate is only 28G amplitude.

A.

True

B.

False