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The physical layer of LAN is often used for the interconnection of routers and switches. Although it is called a local area network, if a 10GBase-LR or -ER optical module is used, the transmission distance can reach 80 kilometers.
The physical layer of LAN is often used for the interconnection of routers and switches. Although it is called a local area network, if a 10GBase-LR or -ER optical module is used, the transmission distance can reach 80 kilometers.A . True B. FalseView AnswerAnswer: A
The number of network elements (including REG) in the two -fiber bidirectional multiplex section sharing protection ring can exceed 16.
The number of network elements (including REG) in the two -fiber bidirectional multiplex section sharing protection ring can exceed 16.A . True B. FalseView AnswerAnswer: A
Complex flow classification refers to classifying packets according to the ToS (Type of Service ) field of IP packets , user priority or EXP field of MPLS packets to identify traffic with different priority characteristics.
Complex flow classification refers to classifying packets according to the ToS (Type of Service ) field of IP packets , user priority or EXP field of MPLS packets to identify traffic with different priority characteristics.A . True B. FalseView AnswerAnswer: B
Which of the following situations can cause the board to reinsert the BDI maintenance signal to the upstream site? (Multiple choice)
Which of the following situations can cause the board to reinsert the BDI maintenance signal to the upstream site? (Multiple choice)A . The board reports R_LOS B. Report OTU2_DEG on the board C. Report OTU2_LOF on the board D. ODU2_PM_LCKView AnswerAnswer: ACD
TM is a terminal multiplexer. Its function is: the line port inputs/outputs one STM-N signal, and the branch port can output/input multiple low-speed branch signals.
TM is a terminal multiplexer. Its function is: the line port inputs/outputs one STM-N signal, and the branch port can output/input multiple low-speed branch signals.A . True B. FalseView AnswerAnswer: A
QinQ technology can be interpreted as 802.1Q in 802.1Q, in other words, a layer of 802.1Q label is added on top of the 802.1Q label , the outer layer is C-VLAN and the inner layer is S-VLAN , two bytes more than a normal 802.1Q frame .
QinQ technology can be interpreted as 802.1Q in 802.1Q, in other words, a layer of 802.1Q label is added on top of the 802.1Q label , the outer layer is C-VLAN and the inner layer is S-VLAN , two bytes more than a normal 802.1Q frame .A . True B....
If a bit error is detected in the B2 byte, the peer end will report the following alarm.
If a bit error is detected in the B2 byte, the peer end will report the following alarm.A . MS-AIS B. RS-BBE C. MS-FEBBE D. MS-BBEView AnswerAnswer: C
When the PM segment of the ODUk generates seriously errored seconds, the network management will report the ODUk_PM_ES alarm.
When the PM segment of the ODUk generates seriously errored seconds, the network management will report the ODUk_PM_ES alarm.A . True B. FalseView AnswerAnswer: B
The frame structure of ODU4 is four times that of ODU1.
The frame structure of ODU4 is four times that of ODU1.A . True B. FalseView AnswerAnswer: B
Which of the following are the main functions of U20 0 0 network management? (Multiple choice)
Which of the following are the main functions of U20 0 0 network management? (Multiple choice) a. topology management B. Performance management C. Troubleshooting D. End-to-end business managementView AnswerAnswer: ABD
