The optical power of one wave is 3dBm, and the optical power of the other wave is 5dBm. The total optical power after the two waves are combined is 3+5 = 8dBm

• A.TRUE
• B.FALSE

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When shutting down the U2000 dual-computer system (Solaris), the following commands will be used:
① $ ./stopnms.sh
② 1> shutdown SYB_BACKUP 2> go
③ shutdown -y -g0 -i5,
④ # sync; sync; sync; sync
The correct order in which these commands appear is ()

• A.④②①③
• B.①②④③
• C.④①②③
• D.②①④③

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The OSN8800 device newly expanded a TN55ND2 board, and it was found that the board could not go online. The following reasons are impossible:

• A.SWDL_PKG_ NOBDSOFT alarm exists in the main control
• B.SWDL_AUTOMATCH_INH alarm exists in the main control
• C.SWDL_BD_WEAKMATCH alarm exists in the main control
• D.SWDL_CHGMNG_NOMATCH alarm exists in the main control

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Which of the following reasons will form discrete services on network management?

• A.The service between two network elements in the same network management, under the premise that the correct time slot is selected, the cross-connection of one network element is delivered through the U2000, and the other is delivered through the command line software and the network management is not uploaded
• B.Intermediate network element service cross-connection is not configured
• C.In 5.0 platform equipment, a certain network element in a complete path is not in the current network management
• D.A complete path is configured between the online NE and the pre-configured NE

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After the faulty board is found at the beginning of the project, after calling the TAC phone to locate the fault, you can go through the DOA process and apply for spare parts directly

• A.FALSE
• B.TRUE

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