Practice Quiz

CompTIA Network+ Exam Review

Category - Networking

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Which layer of the OSI reference model is responsible for ensuring reliable end-to-end delivery of data?
  1. Session
  2. Transport
  3. Network
  4. Data-Link
Explanation
Answer - B - The Transport Layer is responsible for ensuring the end-to-end delivery of data.

Key Takeaway: The Transport Layer is Layer 4 of the OSI model. It is responsible for delivering data to the appropriate application process on the host computer. This process involves statistical multiplexing of data from different application processes by forming data packets and adding source and destination port numbers in the header of each Transport Layer data packet.
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