NAC (Network Access Control1) network access control includes three authentication methods. () Authentication, MAC authentication and Porta authentication. (If English words are involved, please use capital letters)

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ICMPv6 has two types: Error Messages and Information Messages.

• A.FALSE
• B.TRUE

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Which description is correct about the characteristics of a high-availability network? (Multiple choice)

• A.Can recover quickly after failure
• B.No failure
• C.Do not fail frequently
• D.Once a failure occurs, the business can only be restored through manual intervention

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What are the three ways to send IPV4 packets? (Multiple choice)

• A.Broadcast
• B.Unicast
• C.Anycast
• D.Multicast

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As shown in the figure, there are the following configurations under BGP, which of the following descriptions are wrong? (Multiple choice)
[HUAWEI-bgp] timer keepalive 30 hold 90
[HUAWEI-bgp] peer 1.1.2 timer keepalive 10 hold 30

• A.Peer configuration takes precedence, so the final result is that the timer value of peer 1.1.1.2 takes keepalive 10 hold 30
• B.The default configuration is timer Keepalive 60 hold180, so pee r1.1.12 has a faster detection speed for Peer connection failure than the default value
• C.Global configuration takes precedence, so the final result is that the timer value of peer 1.1.1.2 takes keepalive 30 hold 90
• D.Timer takes the minimum value, so the final result is that the timer value of peer 1.1.1.2 takes keepalive10 hold 30

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