Question:
In an IPv4 packet, if \( X \) is written in the protocol field, which of the following is not a valid protocol \( X \)?
In an IPv4 packet, if \( X \) is written in the protocol field, which of the following is not a valid protocol \( X \)?
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When analyzing protocol fields in IPv4, remember that routing protocols like RIP are not directly embedded in the packet. They function separately.
Updated On: Feb 14, 2025
- IGMP
- ICMP
- RIP
- OSPF
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The Correct Option is C
Solution and Explanation
In an IPv4 packet, the protocol field indicates the protocol used in the payload of the packet. The values in the protocol field correspond to different protocols like ICMP, IGMP, OSPF, etc.
- IGMP (Option A) is used for managing multicast groups.
- ICMP (Option B) is used for error reporting and diagnostics.
- OSPF (Option D) is used for routing within an Autonomous System.
However, RIP (Option C) is not directly associated with an IPv4 packet's protocol field. RIP is a routing protocol and not a protocol embedded in the packet payload.
Thus, the correct answer is \( \text{RIP} \).
- IGMP (Option A) is used for managing multicast groups.
- ICMP (Option B) is used for error reporting and diagnostics.
- OSPF (Option D) is used for routing within an Autonomous System.
However, RIP (Option C) is not directly associated with an IPv4 packet's protocol field. RIP is a routing protocol and not a protocol embedded in the packet payload.
Thus, the correct answer is \( \text{RIP} \).
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