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H12-811_V1.0 · Question #901

If the transport-layer protocol is UDP, the value of the "Protocol" field at the network layer is 6.

The correct answer is B. FALSE. In the IP header at the network layer, the Protocol field specifies the transport layer protocol in use. The protocol number for UDP is 17, not 6. Protocol number 6 is reserved for TCP. This field allows IP packets to be correctly processed by the appropriate transport-layer…

Datacom Network Fundamentals

Question

If the transport-layer protocol is UDP, the value of the "Protocol" field at the network layer is 6.

Options

  • ATRUE
  • BFALSE

How the community answered

(17 responses)
  • A
    24% (4)
  • B
    76% (13)

Explanation

In the IP header at the network layer, the Protocol field specifies the transport layer protocol in use. The protocol number for UDP is 17, not 6. Protocol number 6 is reserved for TCP. This field allows IP packets to be correctly processed by the appropriate transport-layer protocol at the receiving device.

Topics

#UDP protocol number#IP protocol field#TCP vs UDP#layer 3 header

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