Implementation Manager (IM) Specialist CHTS Practice Test

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What function is assigned to the Datalink Layer in the OSI Model?

  1. Managing sessions

  2. Handling logical addressing

  3. Providing link-layer addressing

  4. Transporting segments reliably

The correct answer is: Providing link-layer addressing

The Datalink Layer in the OSI Model is primarily responsible for providing link-layer addressing. This layer is crucial as it manages how data packets are framed and addressed for transmission over a specific physical medium, ensuring that the correct devices on the local network can communicate with each other effectively. This function involves adding physical addresses (also known as MAC addresses) to the data frames, which allows devices to identify their intended recipients uniquely on the same local network segment. The Datalink Layer also manages error detection and correction mechanisms to maintain integrity during data transmission. Other choices pertain to functions assigned to different layers in the OSI Model. Managing sessions is a function associated with the Session Layer, handling logical addressing pertains to the Network Layer, and transporting segments reliably is an attribute of the Transport Layer, each serving distinct purposes in the overall architecture of network communication.