Q61. 1: N-linear multiplex section switching requires the APS switching protocol; equipment from different manufacturers may be different due to protocol processing, and may not be interconnected.

Q62. Configuring ROADM sites will enable multi-dimensional wavelength-level service scheduling without manual fiber jumping.

Q63. In the Colorless scenario, use the M40V/D40 board for adding and adding waves.

Q64. The AM port of the TM20 board can input the combined signal

Q65. In the Windows operating system, the log files of the U2000 program are stored in the () directory of the U2000 installation disk.

Q66. Which of the following IP addresses is a Class C IP address?

Q67. Which of the following levels does the U2000 network management belong to?

Q68. In the WDM network design, as long as enough EDFAs are cascaded to compensate the optical power loss in the transmission process. Then the system can transmit very long distance without limitation.

Q69. The instruments commonly used in the daily maintenance and troubleshooting of MSTP equipment are? (Multiple choice)

Q70. In the SDH multiplexing structure, the rate represented by VC-12 is () Mbit/s

Q71. The AAC address consists of 46 bits. It is globally unique. Which of the following is the meaning of a MAC address whose eighth bit is 1?

Q72. QPSK modulation reduces OSNR requirements and fiber non-linear effects, and Improves dispersion tolerance and PMD tolerance.

Q73. When the BIP-8 in the OTUk section monitoring overhead SM detects an error block, what alarm may be reported? (Multiple choice)

Q74. Which of the following statements about the safe use of optical fiber is wrong?

Q75. Which of the following descriptions about the ROADM board is correct? (Multiple choice)

Q76. Once a nonlinear effect occurs, its impact on service signals cannot be repaired. Therefore, the current network’s approach to dealing with nonlinear effects is to avoid the occurrence of nonlinear effects as much as possible.

Q77. OptiXtrans DC908 can predict faults based on trends and volatility, predict all gradual faults in advance, and realize from passive operation and maintenance to active operation and maintenance.

Q78. OSN 7500 supports a maximum of 2M service boards. Which of the following is correct?

Q79. Equipment maintenance personnel can judge whether the equipment has ever failed by observing the indicator lights on site. But the disadvantage of this method is that the information is vague and inaccurate.

Q80. The following description of the electrical layer multiplexing phase mapping steps of ODUO. Which description is wrong?

Q81. In Ethernet, the frame length has a lower limit, which is mainly due to which of the following considerations?

Q82. For OSN series equipment, what alarm will be reported when one of the PIUs is not connected to the power supply?

Q83. Which of the following descriptions about the composition of the SOM system is wrong?

Q84. Which of the following ROADM nodes are configured correctly? (Multiple choice)

Q85. Which of the following is not an optical layer single board in a WDM network?