Q85. Which of the following statements about the EFS4 board are correct? (Multiple choice).

Q86. U2000 can flexibly interconnect with different third-party network administrators through the Northbound Interface (NBI) and provide physical inventory and alarm information for the upper-layer network management.

Q87. Only one TCM can be used at one site

Q88. In a 2.5GMSP ring consisting of four MSTP sites, which of the following statements about alarm reports is correct when a protection switchover occurs?

Q89. OChr means the use of electrical monitoring technology.

Q90. The number of ODU2e signals multiplexed into the ODU3 signal is the same as the number of ODU2 signals multiplexed into the ODU3 signal

Q91. Which of the following statements about the clock source are incorrect?

Q92. Which of the following light sources has the best dispersion tolerance and stability?

Q93. SES: There are 5% or more of the error blocks or at least one defect (OCI/AIS/LCK/IAE/LTC/TIM/PLM) in one second.

Q94. OSN1500/2500/3500/7500 supports DC and AC power inputs.

Q95. output networks require higher costs than belt networks, but provide a more reliable management channel.

Q96. A PAUSE frames use reserved multicast addresses and are not forwarded by bridges or switches. In this way, the PAUSE frame does not generate any additional information.

Q97. When the bridge uses ivl learning mode, an entry in the MAC address table is created based on the source MAC address and source port of the teach frame. This entry applies to all VLANs

Q98. MSP is a network-level protection scheme. MSF does not directly protect services, and MSP switching and recovery are not affected even if there is no service on the MSP ring.

Q99. Which of the following ITLI-T recommendations define the OTN frame structure?

Q100. Which of the following different types of ESC are divided according to the principles of implementation? (Multiple choice)

Q101. The SP3D board supports 63 E1 services

Q102. K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.

Q103. Which of the following is the meaning of SFD in the Ethernet frame structure?

Q104. For 100G (112Gbit/s) signals, the actual data baud rate is only 28G amplitude.

Q105. The backplane has two 48V power cords, and each board gets two -48V power supplies from the backplane. After combining the power supply via diodes, the various voltages required for each component are obtained by means of a DC/DC power module and a linear mane swap.

Q106. Which of the following logical function modules is used to generate exhaust R-LOS alerts?

Q107. Which of the following can be configured as the monitoring time for network element performance events?