According to this figure, can we judge whether R4 is on?

• A.4 equivalent default routes
• B.2 equivalent default routes
• C.2 default routes with different costs
• D.1 default route

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As shown in the figure, all routers run OSPF, because R3 is in the backbone area, so there are no three types of LSAs in R3's LSDB.

• A.TRUE
• B.FALSE

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Which of the following options are there for the conditions for the firewall security policy to match traffic? (Multiple choice)

• A.Source and destination IP addresses
• B.Application
• C.Message length
• D.Source and destination security area

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Which statement is true about ASPF and Server-map? (Multiple choice)

• A.The server-map entry will be deleted after a certain aging time because there is no packet matching. This mechanism ensures that the looser channel such as the Server-map entry can be deleted in time, which ensures the security of the network. When a new data connection is subsequently initiated, the establishment of the Server-map entry will be re-triggered
• B.Only ASPF will generate the Sever-map table
• C.Server-map is usually only used to check the first message, and the message after the channel is established is still forwarded according to the session table
• D.After the channel is established, the message is still forwarded according to the Server-map

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Please match the OSPFv3LSA with its delivery range.

Correct Answer:

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