In the network shown in the figure, which of the following configurations can realize that host A can access the Internet, but host B can not? (Multiple Choice)

• A.acl number 2000 rule 5 permit source 100.0.12.0 0.0.0.255 rule 10 deny source 100.0.13.0 0.0.0.255 # Interface GigabitEthernet0/0/3 traffic-filter outbound ac1 2000 #
• B.acl number 2000 rule 5 deny source 100.0.12.0 0.0.0.255 rule 10 permit # Interface GigabitEthernet0/0/3 traffic-filter outbound ac1 2000 #
• C.acl number 2000 rule 5 permit source 100.0.12.0 0.0.0.255 rule 10 deny # Interface GigabitEthernet0/0/3 traffic-filter outbound ac1 2000 #
• D.acl number 2000 rule 5 deny source 100.0.12.0 0.0.0.255 rule 10 permit source 100.0.13.0 0.0.0.255 # Interface GigabitEthernet0/0/3 traffic-filter outbound ac1 2000 #

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UDP cannot guarantee the reliability of data transmission, and does not provide the functions of message sequencing and flow control. It is suitable for flows with low transmission reliability requirements but high transmission speed and delay requirements.

• A.True
• B.False

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The route entry 10.0.0.24/29 may be aggregated from which of the following subnet routes? (Multiple Choice)

• A.10.0.0.23/3o
• B.10.0.0.28/30
• C.10.0.0.24/30
• D.10.0.0.26/30

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The broadcast address is a special address in which the host bits in the network address are all set to 1, and it can also be used as a host address.

• A.False
• B.True

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By default, the root path cost of the root bridge in the STP protocol must be 0.

• A.False
• B.True

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