Which of the following description about BGP, OSPF, IS-IS is correct?

Question

Options

• AThe BGP neighbor relationship is established based on TCP sessions, and the port number used is 179
• BIS-IS runs based on the IP protocol, using the protocol number 89
• CBGP runs based on UDP sessions, and the port number used is 179
• DOSPF runs based on the IP protocol, and the protocol number used is 90

• A
  76% (26)
• B
  6% (2)
• C
  15% (5)
• D
  3% (1)

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