Which of the following message types does RADIUS use to indicate authentication rejection?

• A.Access-Reject
• B.Access-Accept
• C.Access-Request
• D.Access-Challenge

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Which of the following analysis about ICMP messages is correct? (Multiple choice)

• A.ICMP messages can record time, including original time, receiving time, and sending time
• B.ICMP packets cannot be used to detect the MTU in the path
• C.ICMP messages include ICMP error messages, control messages, request/response messages, and refresh messages
• D.The ICMP protocol does not support the redirection function
• E.ICMP packets are encapsulated in IP packets without transport layer encapsulation

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Which of the following is not included in the VRP system login method?

• A.SSH
• B.Telnet
• C.web
• D.Netstream

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With the topology shown in the figure and the configuration on the interconnection port of the switch, it can be judged that the data frame tagged with VLAN10 can be forwarded normally between the two switches?

• A.False
• B.True

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Regarding the PC getting the address from the DHCP Sever, which command description is correct? (Multiple choice)

• A.Use the ipconfig/renew command to apply for a new IP address in the Windows7/Windows XP environment of the user PC. At this time, the user PC sends a DHCP RENEW message to the DHCP server.
• B.In the Windows7/Windows XP environment of the user PC, use the ipconfig/release command to actively release the IP address. At this time, the user PC sends a DHCP RELEASE message to the DHCP server.
• C.Use the ipconfig/renew command to actively apply for a new IP address in the Windows7/Window XP environment of the user PC. At this time, the user PC sends a DHCP DISCOVER message to the DHCP server.
• D.In the Windows 7/Windows XP environment of the user PC, use the ipconfig/release command to actively release the IP address. At this time, the user PC sends a DHCP REQUEST message to the DHCP server.

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