A network engineer is troubleshooting communication issues related to packet sequencing and error correction between two hosts. Which OSI model layer should the engineer focus on to address these concerns?
Network layer
Session layer
Data Link layer
Transport layer
The Transport layer (Layer 4) is responsible for end-to-end communication management, including error correction and packet sequencing. It ensures reliable data transfer by managing flow control and providing mechanisms for error detection and recovery. The Session layer manages sessions between applications but does not handle error correction or sequencing. The Network layer deals with routing and logical addressing, focusing on data delivery across networks without ensuring reliability. The Data Link layer manages physical addressing and error detection for data frames on the same network segment but does not handle end-to-end error correction between hosts.
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