Which of the following tools cannot be used to match BGP routing entries?

• A.IP Prefix List
• B.Community Filter
• C.Advanced ACL
• D.Basic ACL

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According to this figure, we can judge:

• A.R1 is configured with zone authentication
• B.R1 sets routing domain authentication
• C.The device type of R1 is Level-1
• D.The device type of R1 is Leve-2

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As shown in the figure, OSPF is deployed in a campus, and Area1 is deployed as an NSSA area. By default, R2 will automatically generate a default route of Type7 LSA and flood it in the NSSA area.

• A.TRUE
• B.FALSE

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The dynamic IP address assigned to the client by the DHCP server. Usually there is a certain rental period, which of the following description of the rental period is wrong?

• A.If the client receives a DHCP NAK message within the lease period, the client will immediately stop using this IP address and return to the initialization state, and re-apply for a new IP address
• B.The rebinding timer is 87.5% of the total lease period
• C.The lease renewal timer is 50% of the total lease period. When the "lease renewal timer" expires, the DHCP client must renew the IP address
• D.If the "rebinding timer" expires, but the client has not received a response from the server, it will always send a DHCP REQUEST message to the DHCP server that has previously assigned an IP address until the total lease expires.

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In the following description, which of the following items are used to remind customers of information security? (Multiple choice)

• A.Account sorting reminder
• B.Password update reminder
• C.Data backup reminder
• D.Log Protection Reminders

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