As shown in the figure, EBGP runs between AS100, AS200, AS300, and AS400.
When AS100 receives the BGP route sent by AS400, the path sequence recorded in its AS-Path attribute is ______

• A.(100, 200, 300, 400)
• B.(400, 300.200, 100)
• C.(200, 300, 400)
• D.(400, 300.200)

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As shown in the figure: RTA and RTB are IBGP neighbors, and RTB and RTC are EBGP neighbors.
If the community attribute is used on the router RTA so that the route 10.10.10.0/24 on RTA can only be advertised to RTB, but cannot be forwarded to RTC through RTB, then what community attribute value should be set for 10.10.10.0/24 on RTA ?

• A.no-export
• B.no-export-subconfed
• C.no-advertise
• D.no-advertise-subconfed

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Which of the following levels does the SOA-based network architecture divide the enterprise IT system into? (Choose one or more)

• A.Service layer
• B.Business layer
• C.Network layer
• D.Application layer

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The administrator wants to configure the OSPF routing priority value on the MSR router as 60. Which of the following commands is correct?

• A.Router-ospf-1]preference 60
• B.Router]preference 60
• C.Router-ospf-1]ospf preference 60
• D.Router]ospf preference 60

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Regarding the Tpe3 LSA in the OSPF protocol, the correct statement is ______

• A.Tpe3 LSA is generated by ABR
• B.Tpe3 LSA actually transmits routing entries, not link state descriptions
• C.Tpe3 LSA can be filtered out in some cases
• D.If Tpe3 LSA passes through multiple ABRs during the transfer process, all fields will not change

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