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m v2.05b - Bot T20 CW#61 - Fix errors for CW project (Reference before punctuation) |
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*The Layer 4: [[transport layer]] PDU is the [[Packet segmentation|segment]].
*The Layer 3: [[network layer]] PDU is the [[Network packet|packet]] or the [[datagram]].<ref>{{Cite web|url=https://www.cloudflare.com/learning/network-layer/what-is-a-packet/|title=What is a packet? {{!}} Network packet definition|work=Cloudflare}}</ref>
*The Layer 2: [[data link layer]] PDU is the [[Frame (networking)|frame]].
*The Layer 1: [[physical layer]] PDU is the [[bit]] or, more generally, [[Symbol (data)|symbol]].
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