Which of the following is true about firewall security policies?

• A.By default, the security policy only controls unicast packets.
• B.By default, the security policy can control unicast packets, broadcast packets, and multicast packets.
• C.By default, the security policy can control multicast.
• D.By default, the security policy can control unicast packets and broadcast packets.

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In the VRRP (Virtual Router Redundancy Protocol) group, the primary firewall periodically sends advertisement packets to the backup firewall. The backup firewall is only responsible for monitoring advertisement packets and will not respond.

• A.False
• B.True

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Except built-in Portal authentication, firewall also supports custom Portal authentication, when using a custom Portal authentication, no need to deploy a separate external Portal server.

• A.True
• B.False

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Which level is the corresponding warning for major network security incidents that occur?

• A.Blue warning
• B.Red warning
• C.Orange warning
• D.Yellow warning

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What problem does IPsec IKE aggressive mode mainly solve?

• A.solve the security problem in the process of negotiation
• B.solve NAT traversal problem
• C.solve the problem of slow negotiation on both ends of the tunnel
• D.solve because of uncertain originator source address cannot select pre-shared key problem

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