Which of the following statements is not included in network security optimization?

• A.Management security
• B.Border security
• C.Access control
• D.Log management

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Which of the following formulas is used to calculate availability?

• A.MTBF/(MTBF + MTTR) x 100%
• B.MTBF/MTTR x 100%
• C.MTTR/MTBF x 100%
• D.(MTBF + MTTR)/MTBF x 100%

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Which of the following operations are performed during migration acceptance? (Choose three.)

• A.Documentation transfer
• B.Transfer-to-maintenance training
• C.Business expense accounting
• D.Acceptance meeting

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The customer's project team is the end user of the network, and they are the final judge of the project.

• A.FALSE
• B.TRUE

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Which of the following statements regarding the device software upgrade necessity are true? (Multiple Choice)

• A.The new software version continuously improves stability.
• B.The new software version continuously improves usability.
• C.You are advised to immediately upgrade the system software to the latest version.
• D.The new software version continuously increases new functions.

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