Which of the following operations is performed in the risky operation process?

• A.Implementation and result feedback
• B.Technical review
• C.Authorization obtaining
• D.Solution formulation

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Which of the following are possible causes for an MSTP failure in a LAN? (Multiple Choice)

• A.A physical link alternates between Up and Down, triggering the device to send a large number of TC packets.
• B.MSTP is configured incorrectly.
• C.The MSTP-enabled device receives MSTPTC packets that are transparently sent or from the client.
• D.The priority of the port in the specified MSTE is not configured.

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Which of the following causes may lead to a failure for hosts in the same VLAN to communicate with each other? (Multiple Choice)

• A.Incorrect mappings between interfaces and MAC addresses are configured on the switch.
• B.The switch learns incorrect MAC addresses.
• C.Port isolation is configured on the switch.
• D.The interfaces connected to the users are shut down manually or the physical interfaces are damaged.

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Which of the following aspects should be considered for migration risk assessment?

• A.Key risk positions
• B.Risk impact scope
• C.Risk impact time
• D.Loss caused by risks

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Which of the following WAN links are used on a packet switched network? (Multiple Choice)

• A.X.25
• B.MSTP
• C.ATM
• D.ISDN
• E.PSTN

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