The output information of a certain router is shown in the figure. Which of the following statements is correct?

• A.The DR priority of this routing interface is 10
• B.This router is BDR
• C.The cost value of this interface is 1
• D.The Router ID of the router is 10.0.1.1

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After a fault occurs in the network, the administrator finds that the configuration of a certain router has been modified through troubleshooting. What measures should the administrator take to avoid this situation from happening again? ()*

• A.The administrator should enable port-security on the routed management port
• B.The administrator should configure the permission level of all accounts except the administrator to log in to the device as
• C.The administrator should configure AAA. to authenticate and authorize users who log in to the device
• D.The administrator should configure ACL to control that only the administrator can log in to the device

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Which of the following statements about Python is incorrect?

• A.Python can be used for automated operation and maintenance scripts, artificial intelligence data science and many other fields.
• B.Python has a clear grammatical structure, is simple and easy to learn, and runs efficiently.
• C.Python is a fully open source high-level programming language.
• D.Python has a wealth of third-party libraries.

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The network administrator has captured a data frame on the network, and its destination MAC address is 01-00-5E-A0-B1-C3. The correct statement about the MAC. address is ().

• A.It is a multicast MAC. address
• B.It is an illegal MAC. address
• C.It is a unicast MAC. address
• D.It is a broadcast MAC. address

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The output information of the router R1 routing table is shown in the figure. Which of the following statements is correct?

• A.The router will forward data packets whose destination network is 12.0.0.0/8
• B.The router will discard packets whose destination network is 11.0.0.0/8
• C.The data packet whose destination network is 11.0.0.0/8 will be forwarded from the router's Gigabitethernet0/0/0 interface
• D.The data packet whose destination network is 12.0.0.0/8 will be forwarded from the router's Ethernet0/0/0 interface

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