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Huawei H31-311-ENU Exam Syllabus Topics:

Huawei HCIA-Transmission(Huawei Certified ICT Associate-Transmission) Sample Questions:

1. 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) 200
B) 20
C) 50
D) 100

2. Which of the following alarms does not trigger the AU-AIS alarm?

A) AU-LOP
B) MS-AIS
C) R-LOS
D) B2-EXC

3. When the rate of an SNCP ring consisting of four OptiX OSN 2500 devices is 2.5 Gbit/s, the service capacity of this network can carry a maximum number of ( ) 2 Mbit/s signals.

A) 1008
B) 4032
C) 504
D) 2016

4. Which of the following statements about overhead bytes is incorrect?

A) J0 is a regenerator section trace byte. This byte is used to repeatedly transmit a section access point identifier, so that the receive end can verify its continuous connection to the specified transmit end.
B) A1 and A2 are framing bytes. These bytes are used to separate STM-1 frames in a signal flow.
C) E1 and E2 are orderwire bytes. These bytes are used to provide a voice channel for orderwire connections.
D) B1 is bit interleaved parity-8 (BIP-8). This byte is used to monitor bit errors at the regenerator section layer.

5. An Ethernet private line service is set up between HI (HQ) and H2 (branch) of enterprise H, and five VC-12s are bound in the corresponding VCTRUNK. When one VC-12 fails, the Ethernet private line between HI and H2 is not interrupted.
Therefore, which of the following statements is correct?

A) The QinQ function is enabled on the VCTRUNK ports used by the Ethernet private line service between H1 and H2.
B) The LCAS function is enabled on the VCTRUNK ports used by the Ethernet private line service between HI and H2.
C) The QinQ function is enabled on the ports used by the Ethernet private line service between H1 and H2.
D) The LCAS function is enabled on the ports used by the Ethernet private line service between H1 and H2.

Solutions: