최신 H31-311_V2.5 무료덤프 - Huawei HCIA-Transmission V2.5
Which of the following layers of overhead belong to the electrical layer overhead of OTN? (Multiple choice)
정답: A,B,C
In Recommendation ITU-TG692, the allowed signal frequencies are based on the reference frequency () and the channel spacing can be 100 GHz, 50 GHz or 25 GHz.
정답: A
In the system control unit, which of the following databases will not lose data after a power failure?
(Multiple choice)
(Multiple choice)
정답: B,D
During service configuration, there are two time slot modes. Huawei uses the staggered time slot mode by default.
정답: B
EDFA (Erbium Doped Fiber Amplifier) is a key component of the new generation of optical communication systems. Which of the following options are included in its characteristics?
정답: B,C,D
Which of the following is not one of the main characteristics of SDN?
정답: C
The video system and transmission connection port in the base station is ().
정답:
FE interface
When the working channel of the optical line protection fails, it cannot automatically switch to the protection channel. What are the possible reasons? (Multiple choice)
정답: A,C,D
Which of the following modulation techniques is used in 100G coherent systems?
정답: B
Which of the following statements about extended ECC is wrong?
정답: C
Which of the following networking types is optical line protection mainly used in?
정답: D
Which of the following steps are generally required to multiplex low-speed services into high-speed SDH services? (Multiple choice)
정답: B,C,D
The speed of SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.
정답: B
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?
정답: C
If the OTUk layer overhead is damaged, the board may report OTUk_SM_AIS to indicate the abnormal condition.
정답: B