The network shown in the figure below. Two switches are connected by four links. COPPER refers to electrical interface and FIBER refers to optical interface. Then which two interfaces can realize link aggregation? () (Single-choice question)

• A.G0/0/3 and FE0/0/3
• B.G0/0/3 and G0/0/2
• C.G0/0/2 and G0/0/1
• D.G0/0/2 and FE0/0/3

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The output information of the router is shown in the figure. Which of the following statements is wrong? () (Single-choice question)

• A.Ethernet (The IP address of the /0/0 interface is 10.0.12.1/24
• B.Ethernet0/0/0 interfaceThe MTU value is 1480
• C.The broadcast address corresponding to the AEthernet0/0/0 interface is 10.0.12.255
• D.The physical link of the Ethernet0/0/0 interface is normal

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If Proto of a route displayed in the routing table is OSPF, the preference of the route must be 10.

• A.TRUE
• B.FALSE

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The network structure and OSPF partition are shown in the figure. Except for RTA in the figure, the routers RTB, RTC and RTD are all ABR routers. ()(True or False)

• A.False
• B.True

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Which of the following OSPF packets can be sent to request the locally missing LSAs?

• A.LSI
• B.HELLO
• C.LSACK
• D.LSR

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