NO.121 FOADM includes parallel FOAD and serial FOADM, both supporting 40 waves or 80 waves of arbitrary wavelengths.
- A. TRUE
- B. FALSE
NO.122 Which of the following are limitations of the alarm and performance analysis methods? (Multiple Choice)
- A. Field maintenance personnel cannot understand the current operating condition of the equipment.
- B. The network administrator cannot obtain the current notifications of the device, the alarm occurrence time, and the historical alarm of the device.
- C. When some faults occur, there may be no obvious alarms or performance events reported, and sometimes no alarms or performance events are found.
- D. In the case of complex networking, service, and fault information, many alarms and performance events may occur along with the occurrence of faults. Due to too many reports and performance events, maintenance personnel are unable to analyze.
NO.123 Which of the following are the components of general package format of PWE3? (Multiple Choice)
- A. Type
- B. CW (Control Word)
- C. MPLS label
- D. Payload
NO.124 The following description of the connection of the NG WDM device to the network management computer, which is wrong?
- A. The connection network management computer can be connected either directly or through a local area network, as the case may be.
- B. If the subrack connection mode is master-slave mode, the network management computer must be connected to the main subrack.
- C. All network element IP addresses must be in the same address segment as the network management computer IP address.
- D. Only the gateway network element needs to be connected to the network management computer.
NO.125 What are the prerequisites for creating a bidirectional MPLS tunnel? (Multiple Choice)
- A. Users have network administrator user rights of "Administrators" and above
- B. The LSR ID of each NE is correctly configured.
- C. Determine the bandwidth of the MPLS Tunnel
- D. Port properties have been configured correctly
NO.126 Which of the following meters/boards can be used to test the OSR metrics for 10G systems? (Multiple Choice)
- A. Spectrum Analyzer
- B. MCA8
- C. SDH Analyzer
- D. Optical power meter
NO.127 What should I pay attention to when commissioning a 100G and 10G hybrid transmission system? (Multiple Choice)
- A. Pay attention to the mixed spectrum. The spectrum of the 100G signal is wider and looks lower than the 100G signal in the spectrum, but the actual optical power is equivalent.
- B. For a hybrid transmission system with dispersion compensation, the dispersion compensation requirements are consistent with the requirements in a 10G non-coherent system.
- C. In order to accurately measure the optical power of 100G wavelength, it must be debugged using a spectrum analyzer or a MAC card.
- D. The optical power of the 100G signal is recommended to be higher than the optical power of the 10G signal, but not higher than the single-wave nominal value of the optical panel.
NO.128 Which of the following alarms will trigger the optical line protection switching? (Multiple choice)
- A. POWER DIFF_OVER
- B. R_LOF
- C. MUT_LOS
- D. R_LOS
NO.129 Which of the following description of the DM12 board are correct? (Multiple choice)
- A. One DX1 board can be used with two DM12
- B. Access the NX6bit/s and sub-rate service signals through the DB28 connector on the DM12 board.
- C. Electrical signal input and output interfaces for DDN, Unframed E1 and sub-rate services
- D. Accessing G.703 64 kbit/s co-directional service signals through the DB44 interface on the DM12 board
NO.130 Which of the following description of ODUflex are correct? (Multiple choice)
- A. The advantage of ODUflex is that users can flexibly configure the capacity of the container according to the size of the service to achieve the most efficient use of railway bandwidth.
- B. Services supported by ODUflex range from 1.25 Gbit/s to 10 Gbit/s
- C. ODUflex refers to non-fixed bandwidth ODUk technology
- D. ODUflex bandwidth of per TS subslot is 1.25 Gbit/s
NO.131 In the non-aggregated OTU processing SDH standard signal scenario, both A and B are WDM stations, and the R_Los alarm is detected on the client side of the OTU of the A station. After the alarm is processed on the WDM side of the OTU, the client side of the downstream B station detects and reports the REM_SF alarm, and the B station transmits the signal to the downstream client device and reports the R_LOS alarm to the client device.
- A. TRUE
- B. FALSE
NO.132 Which of the following statement about the MPLS-TP OAM level is correct?
- A. Section is the service layer of the tunnel, Tunnel is the service layer of the PW, and PW is the service layer of the Service.
- B. Section is the service layer of PW, PW is the service layer of Tunnel, and Tunnel is the service layer of Service.
- C. Service is the service layer of the PW, PW is the service layer of the Tunnel, and Tunnel is the service layer of the Section.
- D. Tunnel is the service layer of PW, PW is the service layer of Service, and Service is the service layer of Section.
NO.133 Which of the following device types support the master-slave sub-architecture mode? (Multiple Choice)
- A. OSN 8800
- B. OSN 1800V
- C. OSN 9800
NO.134 Generally, in the NG WD system, the full-wave fiber input power is generally less than 20dBm. What is the main reason?
- A. In order to extend the life of the laser of the board
- B. In order to protect the cable
- C. To avoid nonlinear effects
- D. In order to maintain the personal safety of personnel
NO.135 Loopback is a common operation for routine maintenance and troubleshooting. Which of the following statements about loopback operations are incorrect?
- A. The hardware loopback is performed by using the fiber jumper or self-loop cable to perform the loopback on the optical port or electrical port.
- B. After the outloop is performed, the signals are transmitted to the internal.
- C. After the inloop is performed, the signals are transmitted to the external.
- D. When performing a hardware loopback on an optical port, you need to add an optical attenuator.