A DHCP server is deployed in the network, but the administrator found that some hosts did not correctly obtain the address specified by the DHCP server. What are the possible reasons? (Multiple choice)

• A.The address pool of the DHCP server has all been allocated
• B.There is another DHCP server in the network that works more efficiently
• C.Some hosts cannot communicate with the DHCP server normally, and the client systems of these hosts automatically generate addresses in the range of 127.254.0.0
• D.Some hosts cannot communicate with the DHCP server normally, and the client systems of these hosts automatically generate addresses in the range of 169.254 0.0

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The administrator plans to implement route backup by configuring static floating routes, what is the correct way to achieve this?

• A.The administrator only needs to configure two static routes
• B.The administrator needs to configure different protocol priority values for the main static route and the standby static route
• C.The administrator needs to configure different TAGs for the main static route and the standby static route
• D.The administrator needs to configure different metric values for the main static route and the standby static route

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What are the advantages of the OSPF protocol? (Multiple Choice)

• A.Division of support areas
• B.OSPF supports type-less inter-domain routing (CIDR)
• C.OSPF supports load sharing for equal-cost routes
• D.OSPF supports message authentication

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FIT AP can work independently without relying on AC.

• A.True
• B.False

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Which of the following descriptions about the switch is wrong?

• A.The switch can provide network access services for terminal equipment (PC. Server)
• B.Switches are generally used as network export equipment
• C.Switches generally work at the data link layer
• D.The switch can complete the exchange of data frames

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