Which of the following description about DD packets and LSA of OSPF is correct? (Multiple choice)

• A.DD packet contains detailed information about LSA
• B.The header of an LSA can uniquely identify an LSA
• C.The DD packet contains only LSA header information
• D.LSA header is only a small part of LSA

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On the VRP platform, which of the following methods can be used to access the previous history commands?

• A.Up cursor
• B.Ctr1+P
• C.Ctr1+U
• D.Left cursor

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Which of the following are not the characteristics of a small-sized campus network?

• A.Simple network requirements
• B.Wide coverage
• C.Fewer users
• D.Simple network level

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The Layer 2 networking of WLAN means that the STA uses the AC as its gateway.

• A.False
• B.True

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As shown in the figure below, the network and switch configuration information are shown in the figure. Which of the following statements is correct? (Multiple choice)

• A.The PVID of the switch GigabitEthernet0/0/1 port is 20
• B.Host A and Host B can be pinged
• C.Data frames on the two links do not contain VLAN TAG
• D.Host point and host B cannot ping

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