The key components of a packet header include:
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Source Address: The IP address of the device that sent the packet.
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Destination Address: The IP address of the device intended to receive the packet.
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Protocol Information: Indicates the protocol used for the packet, such as TCP (Transmission Control Protocol) or UDP (User Datagram Protocol).
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Sequence Number: A number that helps to order packets correctly when they arrive out of sequence.
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Checksum: A value used for error-checking to ensure the integrity of the packet data.
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Time to Live (TTL): A field that limits the packet's lifespan, preventing it from circulating indefinitely in the network.
These components work together to ensure that packets are routed correctly and delivered reliably across networks.
