Regarding the command of 0SPF route aggregation, the correct description is:

• A.The asbr-summary command is a command in the OSPF view.
• B.The abr-summary command is a command in the OSPF area view.
• C.advertise is the default parameter of the abr-summary command, that is, if not-advertise is specified in the abr-summary command, the default is advertise
• D.not-advertise is the default parameter of the abr-summary command, that is, if the abr-summary command does not specify advertise, the default is not-advertise

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Which of the following IEEE standards are formulated for Gigabit Ethernet?

• A.802.3ab
• B.802.3ad
• C.802.3af
• D.802.3z

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BGP can only automatically aggregate routes imported locally through the Import-route command.

• A.FALSE
• B.TRUE

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The security protection actions that can be performed by a secure MAC address do not include which of the following?

• A.Protect
• B.Restrict
• C.Shutdown
• D.Remark

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When the administrator wants to manage some routes on the router during operation and maintenance, which of the following tools can mark these routes for easy management?
Admin configuration policy?

• A.If the BGP protocol is running, use the community attribute to mark the route
• B.Use ACLs to mark routes on routers.
• C.Use tagsThe value marks the route on the router.
• D.use ip-prefix in The route is marked on the router.

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