Which of the following descriptions of the firewall fragment cache function are correct? (Multiple choice)

• A.After the fragmented packet is directly forwarded, the firewall forwards the fragment according to the interzone security policy if it is not the fragmented packet of the first packet.
• B.For fragmented packets, NAT ALG does not support the processing of SIP fragmented packets.
• C.By default, the firewall caches fragmented packets.
• D.By default, the number of large fragment caches of an IPV4 packet is 32, and the number of large fragmentation buffers of an IPV6 packet is 255.

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Information security levelprotection is the basic system of national information security work

• A.True
• B.False

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What port numbers may be used by FTP protocol? (Choose two.)

• A.23
• B.80
• C.20
• D.21

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Which configuration is correct to implement NAT ALG function?

• A.alg protocol
• B.nat alg protocol
• C.detect protocol
• D.nat protocol

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When configuring NAT Server on the LSG series firewall, the server-map table will be generated. Which of the following does not belong in the table?

• A.Destination IP
• B.Agreement number
• C.Source IP
• D.Destination port

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