Which of the following refers to network communication? (Multiple choice)

• A.Use instant messaging software (such as, QQ, WeChat) to chat with friends
• B.Download emails from the company mailbox to your computer
• C.Use computer to watch video online
• D.Use a computer to visit the company's official website

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The second layer ACL can match the source MAC, destination MAC, source IP, destination IP and other information.

• A.True
• B.False

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The IPv6 address 2001: ABEF: 224E: FFE2: BCC0: CD00: DDBE: 8D58 cannot be abbreviated.

• A.False
• B.True

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In standard STP mode, which of the following non-root switches will forward the TC set BPDU generated by the root switch?

• A.Preparation port
• B.Root port
• C.Backup port
• D.Designated port

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Which of the following packet types is used by RADIUS to indicate authentication rejection?

• A.Access-Reject
• B.Access-Challenge
• C.Access-Request
• D.Access-Accept

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