If the broadcast address of a network is 172.16.1.255, what might its network address be? ()

• A.172.16.1.128
• B.172.16.1.253
• C.172.16.1.1

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The network shown in the figure below. The host has an ARP cache. Which of the following statements are correct? )(Multiple Choice Questions)

• A.Host A and Host B can communicate in two directions
• B.The router needs to be configured with a static route. Otherwise, host A and host B cannot communicate in both directions
• C.The following entries may appear in the ARP cache of host A 10.0.12.2MAC-C
• D.The following entry 11.0.12.1 MAC-B exists in the ARP cache of host A

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As shown in the figure below, assuming that the other configurations of the switch are kept in the default state, which port of the following switch will become the designated port? () (Multiple Choice Questions)

• A.SWC's G0/0/2
• B.SWA's G0/0/3
• C.G0/0/1 of SWB
• D.SWC's G0/0/1

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Which of the following packets is used by OSPF to describe its link state database (LSDB)?

• A.LSR
• B.DD
• C.HELLO
• D.LSU

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Wireless access controller (AC, Access Cntroller) As a unified management and control device in the FIT AP architecture, the following description of the role of AC. is wrong ()

• A.B. User access control
• B.No matter when the data is forwarded, the user's data message will be forwarded by AC.
• C.D. AP configuration delivery
• D.C. User access authentication

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