The SP3D board supports 63 El services.

• A.TRUE
• B.FALSE

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Which of the following statements about the 1+1 protection of cross-connect boards are correct? (Multiple Choice)

• A.The source service board sends services to the active and standby cross-connect boards.
• B.The sink service board can receive only the data from the active cross-connect board.
• C.After service cross-connections are completed, the active and standby cross-connect boards send the data of the active cross-connect board to the sink service board.
• D.The dual-bus system structure indicates that the service board performs dual feeding of data to the cross-connect side and selective receiving of the data on the cross-connect side.
• E.Two cross-connect boards have the same configuartion. Service boards will selectively receive services from one of them based on the quality of services and status of cross-connect boards.
• F.The buses of the two cross-connect modules work independently and do not interfere with each other.

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Which of the following is not an EVPLAN feature?

• A.Multipoint-to-multipoint topology
• B.Forwarding based on MAC addresses
• C.Point-to-point and point-to-multipoint topologies
• D.Bandwidth sharing

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In an OSN 550, the CXL slot houses a functional board that integrates the system control and communication (SCC) unit, cross-connect unit, and clock unit. The functional board is available in multiple types depending on the functions and access capabilities provided by the OSN 550.

• A.TRUE
• B.FALSE

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Which of the following statements about U2000 license is incorrect?

• A.Each license file corresponds to the equipment serial number (ESN) of one U2000 computer, and therefore can be used only on the corresponding computer.
• B.The U2000 license file is named in the "xxxxxxx.dat" format.
• C.Do not modify license files. Otherwise, the license files will fail.
• D.Formal U2000 license varies depending on operating system platforms. You must apply for a U2000 license based on the specific operating system.

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