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Huawei H31-311_V2.5 Exam Syllabus Topics:

Huawei HCIA-Transmission V2.5 Sample Questions:

1. In the process of data service adjustment, we often use the PING command to verify whether the Ethernet service at both ends of the device is established. If the port with IP address 129.9.0.1 is PINGed 200 times with a data packet length of 1000 bytes, what is the DOS command?

A) ping129.9.0.1-i1000-t200
B) ping129.9.0.1-i200-n1000
C) ping129.9.0.1-i1000-n200
D) ping129.9.0.1-i200-t1000

2. Which of the following statements are correct regarding the alarms caused by mismatch? (Multiple choice)

A) If the C2 byte mismatch occurs, an HP-UNEQ alarm is generated.
B) J1 byte mismatch may also cause service interruption
C) If the J0 byte mismatch occurs, an RS-TNWM alarm is generated.
D) All of the above are correct

3. SDH network is composed of multiple network nodes (network elements) interconnected by optical fibers; network topology generally refers to the shape of the network, that is, the geometric arrangement of network nodes and transmission lines, which reflects the logical connection of the network.

A) True
B) False

4. The essence of OPSK modulation is to select four possible values on the phase of the optical field so as to reduce the baud rate of the optical signal by half without reducing the line rate. This multiplexing method can reduce the spectral bandwidth of the optical signal by half, making multi-wavelength ULH transmission with 50GH interval and 40G line rate possible.

A) True
B) False

5. According to the number of transmission modes in the optical fiber, optical fiber can be divided into () and ().

Solutions: