Which of the following options is not included in the processing method adopted by the firewall for the matched authentication data flow?

• A.Portali certification
• B.not certified
• C.WeChat authentication
• D.Certification-free

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The reason why NAPT can realize one-to-many address translation is that the ______ is also translated when the address is translated, so multiple private addresses can share the same public address.[fill in the blank]*

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When configuring a GRE Tunnel interface, which of the following parameters does the Destination address generally refer to?

• A.Outbound IP address of the local external network
• B.The external IP address of the peer
• C.IP address of the remote tunnel interface
• D.Local Tunnel interface IP address

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The firewall is divided according to the protection object,windowsfirewall belongs to- ?

• A.Internet Firewall
• B.Software Firewall
• C.Stand-alone firewall
• D.hardware firewall

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Regarding the description of the firewall fragment caching function, which of the following options are correct? (Multiple choice)

• A.By default, the maximum fragment cache number of an IPV4 message is 32, and the maximum fragment cache number of an IPv6 message is 255
• B.For fragmented packets, NAT ALG does not support the processing of SIP fragmented packets
• C.After configuring the direct forwarding of fragmented packets, the firewall will forward fragmented packets that are not the first fragment of packets according to the inter-domain security policy
• D.By default, the firewall caches fragmented packets

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