A

Admin • 831.35K Points
Coach

Q. What is the primary role of the 'Protocol' field in an IPv4 header?

  • (A) Defines the IP version
  • (B) Indicates the Transport Layer protocol in use
  • (C) Specifies the TTL
  • (D) Identifies the source IP
Explanation by: Admin
The Protocol field specifies which Transport Layer protocol (e.g., TCP, UDP) the packet is carrying.

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