Which of the following operations is not used to verify a migration solution?

• A.Perform technical review by each involved party.
• B.Assess risks.
• C.Review the solution by original vendor experts.
• D.Build an FOA site for tests.

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Migration rollback is to restore the network state back before the migration.

• A.TRUE
• B.FALSE

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Which of the following steps or measures are taken in the one-by-one check phase of the structured network troubleshooting process? (Multiple Choice)

• A.Temporary environment setup
• B.Information filter
• C.Rollback preparation
• D.Contingency plan

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Which of the following statements regarding border security optimization are true? (Multiple Choice)

• A.Optimization measures include attack defense technologies, packet filtering, and hardware firewalls.
• B.Border security optimization aims to prevent or reduce external network attacks and harm.
• C.The optimization position is usually located at the network edge.
• D.Border security optimization aims to achieve secure user access control.

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An enterprise network usually uses private IP addresses for internal communication. Which of the following addresses is a private IP address?

• A.127.5.4.3
• B.128.0.0.5
• C.172.24.35.56
• D.0.1.1.1
• E.231.33.24.35

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