최신 H31-311_V2.5 무료덤프 - Huawei HCIA-Transmission V2.5
The levels of forced switching, fiber break switching, manual switching, and practice switching are arranged from high to low.
정답: A
Which of the following options are low-loss areas of single-mode optical fiber? (Multiple choice)
정답: A,D
G.707 multiplexing line diagram can only multiplex 2M\34M\140M signals into STM-N.
정답: B
The packet service board can perform L3 layer processing on the accessed large network services.
정답: A
According to the different transmission media, the transmission system can be divided into () system and () system.
정답:
Wired transmission | Wireless transmission
The primary and backup ports of the linear multiplexing segment must be on the same board.
정답: B
Which of the following situations can cause the board to insert the BDI maintenance signal back to the upstream site? (Multiple choice)
정답: A,B,C
When the sender detects that b6-b8 of the K2 byte is 110, it means that the sender reports a () alarm.
정답: D
Which of the following correctly describes the order in which the signal flow between the SDH interface and the cross-unit passes through the module units?
정답: D
Which of the following layers of overhead belong to the electrical layer overhead of OTN? (Multiple choice)
정답: A,C,D
OSN 3500 has strong branch service up and down capabilities, with 16 branch outgoing line slots, 504
2M, 32 E4, 117 E3/DS3, 132 STW-1e up and down on a single subrack, providing STM-1/4/16/64 group rate.
2M, 32 E4, 117 E3/DS3, 132 STW-1e up and down on a single subrack, providing STM-1/4/16/64 group rate.
정답: A
Which of the following statements about the sequence of signal flow between SDH interfaces and cross-connect units are correct?
정답: D
The preamble of the Ethernet frame structure is 7 bytes long, and the bit pattern of each byte is
10101010.
10101010.
정답: B
For OSN products, changing which of the following parameters will cause the network element to reset?
정답: A
Four network elements form an STM-4 bidirectional multiplex section protection ring. Which of the following is the maximum service capacity of the network?
정답: A
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 the processed clock and provide the clock source for other devices that need timing.
정답: B