UDP port scanning means that the attacker sends a zero-byte UDP packet to a specific port of the target host. If the port is open, it will return an ICMP port reachable data packet.

• A.False
• B.True

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On the USG series firewalls, the default security policy does not support modification

• A.True
• B.False

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Which of the following scenarios does not support by IPSEC WEB configuration of USG6000 series firewall?
(Choose two.)

• A.Gateway to Gateway
• B.Gateway Center
• C.Branch Gateway
• D.Host and Host

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Which of the following descriptions about the action and security profile of the security policy are correct?
(Multiple choice)

• A.The security profile must be applied to the security policy thats allowed to take effect.
• B.The security profile may know: be applied to the security policy tfat the action is allowed and take effect.
• C.If the action of the security policy is "prohibited", the device willdiscard this traffic, and then no content security check will be performed.
• D.If the security policy action is "Allow", the traffic will not match the security profile.

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Digital certificate technology solves the problem that public key owners cannot determine in digital signature technology.

• A.False
• B.True

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