194035

Zhejiang University

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data link layers
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13

September 2024

2024/2025
The Data Link Layer is the second layer of the OSI model, responsible for ensuring reliable data transfer across a physical link between two devices. Its main functions include: Framing: Organizes raw bits into frames for transmission. Addressing: Uses MAC addresses to identify devices on a local network. Error Detection: Identifies and corrects transmission errors (e.g., via CRC). Flow Control: Regulates data flow to prevent overwhelming the receiver. Medium Access Control (MAC): Manages...
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