Regarding the configuration description of the U2000 northbound CORBA interface, what is wrong is

• A.Set the host address, enter the host name or IP address according to the network management plan and design. The "host" mentioned here refers to the computer that provides CORBA services
• B.The default port numbers of normal mode and SSL mode in the basic configuration of U2000 CORBA are different
• C.The U2000 northbound CORBA interface and the U2000 server run on the same machine, and the machine configuration is required to be able to install and run the U2000 server, and no additional hardware configuration is required
• D.In the U2000 CORBA configuration, at least one of the filtering virtual network element switch and virtual network element switch must be configured

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Network elements A, B, and C are OSN 3500 forming a chain network. The two stations A and C are connected to routers. The IP routers are connected to the OptiX SDH equipment through the POS port of STM-1. The PAS port connects J1 and C2 bytes. It is also used as a payload to transfer bytes (used to carry services). The network element A to the network element C creates a VC4 service, and the network element B uses VC4 to pass through.
In this case, is there an alarm report inside the SDH network?

• A.There is a C2 not loaded alarm
• B.There is a J1 mismatch alarm
• C.There is a C2 mismatch alarm
• D.No warning

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Use end-to-end path configuration circuit on the network management, then there will be no discrete services on the network management, and it can ensure that the configured circuit is complete.

• A.FALSE
• B.TRUE

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After which of the following steps, the rollback operation can no longer be performed

• A.Load
• B.Activate
• C.Submit
• D.Distribution

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Regarding system security planning and reliability planning, which of the following is correct (multiple choice)

• A.Operational safety and reliability design includes: access control, ACL control, time control, limit on the number of logins, user monitoring and operation confirmation.
• B.The security management of the network management mainly includes object management, password management, access control management, and power and domain management.
• C.In the process of data output, to ensure the security of data transmission, U2000 needs to support data encryption protocol, in which SSLv3 protocol can be used for data transmission encryption between U2000 and network element equipment, and it can also be used for U2000 and upper OSS system Data transmission between is encrypted.
• D.Based on security considerations, the recommended communication bandwidth for medium-scale remote dual-system hot backup communication is 2M.

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