In the broadcast network as shown in the figure, 0SPF runs on four routers. And in the same are a. The same network segment. SPF will automatically elect one DR and multiple BDRs to achieve a better backup effect. ()(True or False)

• A.True
• B.False

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Which of the following descriptions of wireless devices is correct? ()

• A.The wireless controller AC is generally located at the convergence layer of the entire network, providing high-speed, safe and reliable VLAN services
• B.FIT AP generally independently completes user access, authentication, service forwarding and other functions
• C.FAT AP. Generally work with wireless controller
• D.The wireless device does not have a wired interface

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After link authentication is completed, STA.
will continue to initiate link service negotiation. Which of the following messages will be used to achieve the specific negotiation? ()

• A.Handshake
• B.Join
• C.Negotiate
• D.Association

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Which of the following statements about static routing in Huawei equipment is wrong is.

• A.The cost value (Cost) of the static route cannot be modified.
• B.The default value of the static route priority is 60
• C.When the priority of a static route is 0, the route will definitely be preferred.
• D.The range of the priority value of the static route is 1-255

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The IPv6 protocol uses NS and NA.
packets for duplicate address detection ()

• A.True
• B.False

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