NO.136 When the optical cable between the FIU and the FIU fails, the optical layer alarm reported by the downlink site is (). (Multiple Choice)
- A. OSC_RDI
- B. R_LOS
- C. MUT_LOS
- D. OSC_LOS
NO.137 Which of the following subracks does not support the configuration of packet board?
- A. OSN 1800II
- B. OSN 9800 P18
- C. OSN 8800 T16
- D. OSN 1800V
NO.138 The main function of the transport layer in the Huawei ECC protocol stack is _____.
- A. Establish and maintain a MAC connection between neighboring network elements.
- B. Establish and maintain an ECC routing table.
- C. Provide end-to-end communication services to the upper layer
- D. Provide data communication services.
NO.139 Which of the following description of the principle of automatic protection switching of the standard SSM protocol is correct? (Multiple Choice)
- A. The network element broadcasts the clock quality information of the synchronization source to the downlink site through the s1 byte. And reverse notice the uplink site by the S1 byte in the direction of the synchronization source that the clock quality from the local network element is "not available for synchronization".
- B. If there are multiple clock sources with the highest quality level, the network element selects the clock with the highest clock priority as the synchronization source.
- C. According to the clock source priority table, the network element first selects the clock with the highest quality level from the available clock sources as the synchronization source.
- D. The network element broadcasts the clock quality information and the clock source ID of the synchronization source to the downlink site through the S1 byte, and reverse notices the uplink site that the clock quality from the local network element is "not available for synchronization" by the S1 byte in the direction of the synchronization source.
NO.140 If you want to establish a GE-level path on the NMS, which of the following steps are required? (Multiple choice)
- A. Configure the wavelength
- B. Configure logical connection
- C. Create an OCh path
- D. Create an ODUk path
NO.141 The OCh path is created using the single station method. After the creation is completed, the 0ch path is not searched. Which are the possible reasons? (Multiple choice)
- A. Line attenuation is too large
- B. Missing logical fiber between sites
- C. Inconsistent wavelengths of the line boards at both ends of the source and sink
- D. errors in source and sink ports in the site
NO.142 Using the path method to create a Client path fails. What are the possible reasons? (Multiple choice)
- A. FEC mode does not match at both ends of the transceiver
- B. The channel has been used up
- C. Physical connection lacking between boards
- D. There is no complete OCh path
NO.143 When creating an electric layer path, one RX/TX port can only establish a connection with one optical channel of the clientLP port.
- A. TRUE
- B. FALSE
NO.144 Which layer of the TCP/IP protocol is the TCP/UDP protocol located?
- A. Application layer
- B. Network layer
- C. Data link layer
- D. Transport layer
NO.145 As with the STP device, the NG WDM device can practice the network element configuration on the network through pre-configured method.
- A. TRUE
- B. FALSE
NO.146 The main light path monitoring is based on the OMS segment and it mainly monitors which of the following items? (Multiple choice)
- A. Line attenuation exceeds the design EOL value.
- B. The main light path is broken?
- C. Line attenuation compensation is abnormal
- D. The origin of the optical discharge power is abnormal
NO.147 For a 10G OTU board, the receiving end optical module uses PIN module. Which of the following receiving powers is in the normal receiving range of the board?
- A. -9dBm
- B. -19dBm
- C. 9dBm
- D. 19dBm
NO.148 In the Colored&Directioned scenario of the 4D ROADM, if you want to implement local service scheduling in four directions, how many sets of M40V+D40 are needed?
- A. 2
- B. 1
- C. 4
- D. 9
NO.149 In the electrical layer overhead processing-sink function, the signal flow is from the OCh to the client direction, the PM ODUkP is detected first, and then the TCM ODUkT is detected.
- A. TRUE
- B. FALSE
NO.150 The NG WDM two-dimensional ROADM site can use the WSMD9 single board, and its signal flow is an optical signal that is connected to the main optical channel from the "IN" optical port. The RDU (ROADM Demix Unit) optical module broadcasts 9 identical optical signals, which are output from the "DM1~DM8" and "ECPO" optical ports respectively. One of the signals is localized by the splitter board, and the other eight signals are dispatched to the other eight directions. Each wave of the main optical channel is connected from the "EXPI" optical port. The multiplexed or single-wave optical signal that needs to be inserted locally is input through the "AM1"~"AM8" optical port.
- A. TRUE
- B. FALSE