The switch G0/0/1 port configuration information is shown in the figure. Which VLAN data frame does the switch forward without VLANTAG? ? () (Single-choice question)

• A.C. 20
• B.B. 30
• C.D. 40

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Which of the following statements about the output on the router R1 shown in the figure is false?

• A.The MTU of Ethernet 0/0/0 is 1480.
• B.The IP address of Ethernet 0/0/0 is 10.0.12.1/24.
• C.The physical link of Ethernet 0/0/0 is working normally.
• D.The broadcast address of Ethernet 0/0/0 is 10.0.12.255.

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The two switches shown in the figure below have both enabled the STP protocol. Which port will eventually be in the Blocking state? ()

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

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Which of the following OSCan PF protocol packets ensure the reliability of LSA update? ()

• A.LSACK
• B.DD
• C.LSR
• D.LSU

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Which of the following statements about the Python language is wrong?

• A.Python generally executes code from beginning to end in order.
• B.The role of print is to output the content in the brackets.
• C.Pay attention to the use of comments when writing code to help readers understand the code. Comments start with #.
• D.Python language supports automatic indentation, so you don't need to pay attention when writing code.

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