In a dual-system hot backup, the backup channel must be the primary interface port by the board, which type is not supported?

• A.Ethernet
• B.GigabitEthernet
• C.E1
• D.vlan-if

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Static fingerprint filtering function, different processing methods for different messages, the following statement is correct?

• A.TCP/UDP/custom service can extract fingerprints based on the payload (ie the data segment of the message)
• B.DNS packet extracts fingerprints for Query ID
• C.HTTP message extracts fingerprint for universal resource identifier URI
• D.ICMP message extracts fingerprint by identifier

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In USG2200 series of products, GigabitEthernet 0/0/0 is the band management interface by default.

• A.FALSE
• B.TRUE

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Is the correct statement about TCP proxy and TCP reverse source probing?

• A.TCP proxy and TCP reverse source probe can prevent SYN Flood
• B.The principle of the TCP proxy is that the device acts as a proxy for the TCP connection between the two ends. When one end initiates the connection, it must first complete the TCP 3 handshake with the device.
• C.Use TCP proxy mode for attack defense, you must enable the state detection mechanism.
• D.TCP reverse source detection detects the source IP by sending a Reset packet.

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After importing the ISP address file on the Huawei USG6000 firewall, specify the outbound interface to be associated with an operator name. The firewall then generates the ISP route to this carrier network in batches. Which of the following description about this route is correct?

• A.The source address is the IP address in the ISP address file.
• B.The route priority is 60.
• C.The protocol type displayed in the routing table is UNR (user network route).
• D.The next hop is the address of the device on the carrier's network.

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