Which statement about IP-link features are correct? (Choose three answers)

• A.IP-link is a link connectivity detection function
• B.ARP detection methods only support direct link
• C.Firewalls will send ICMP or ARP packets to determine if the destination address is reachable to the destination address of a probe
• D.With IP-link and associated VGMP, when the IP-Link status becomes down, VGMP lowers the default priority management group by 3.

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About server load balancing, there is the following configurations:
[USG] slb
[USG-slb] group 0 test
[USG-slb-group-test] metric weight-srchash
[USG-slb-group-test] rserver 1 rip 10.1.1.3 weight 32
[USG-slb-group-test] rserver 2 rip 10.1.1.4 weight 16
[USG-slb-group-test] rserver 3 rip 10.1.1.5 weight 32
[USG-slb] vserver 1 test
[USG-slb-vserver-1] protocol any
[USG-slb-vserver-1] group test
Which of the following statements are correct? (Multiple choice)

• A.According to the weight value, it is judged which server the data flow goes to. The smaller the weight value is, the weaker the corresponding real server processing capacity is.
• B.The load balancing algorithm is a simple polling algorithm.
• C.The load balancing algorithm is weighted session maintenance.
• D.This configuration is a complete load balancing configuration.

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With regard to the Radius agreement, what are the following statements correct?

• A.uses the UDP protocol to transmit Radius packets.
• B.authentication and authorization port number can be 1812
• C.Encrypt the account when transferring user accounts and passwords using the Radius protocol
• D.authentication and authorization port number can be 1645

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IP-link probe packets will be sent to the specified IP address by default when the probe fails three times, enabling this interface if the main link fails.

• A.TRUE
• B.FALSE

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About Radius certification process, there are the following steps:
1. The Radius client in the network device receives the username and password and sends an authentication request to the Radius server.
2. When the user logs in to a network device such as the USG, the user name and password will be sent to the Radius client.
3. After the Radius server receives a valid request, it completes the authentication and returns the required user authorization information to the Radius client.
Which of the following order is correct?

• A.1-2-3
• B.2-1-3
• C.2-3-1
• D.3-2-1

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