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Exam Code: H31-311_V2.5
Exam Questions: 250
HCIA-Transmission V2.5
Updated: 06 Jan, 2026
Question 1

The nominal rate of OTU4 signals is 111,809,973.568 kbit/s. Generally, the line rate is 112 Gbit/s. 

Options :
Answer: A
Question 2

Which of the following is the configuration mode for the new NE?( Multiple choices).

Options :
Answer: A,B,D
Question 3

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

Options :
Answer: A
Question 4

According to ITU-T's recommendations, the requirement that the MSP switching time should be within 50ms is conditional. For example, the number of net elements on the entire ring network is less than 16.

Options :
Answer: B
Question 5

On OSN Series transmission devices, ethernet ports cannot access tagged and untagged frames at the same time

Options :
Answer: B
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