Error control is mainly a function of the _________ layer.a.Applicationb.Physicalc.Data Linkd.Presentation

Break Down the Problem

1. Identify the key concepts concerning error control in networking.
2. Determine which layer of the OSI model is responsible for error control.

Relevant Concepts

3. Error control primarily refers to the detection and correction of errors in the transmitted data.
4. In the OSI model, the layers include the Application, Presentation, Session, Transport, Network, Data Link, and Physical layers.

Analysis and Detail

5. • Application Layer: Primarily interacts with software applications and does not handle error control directly.
   • Physical Layer: Responsible for the transmission of raw data but typically does not involve error detection/correction mechanisms.
   • Data Link Layer: At this layer, error detection and correction methods like checksums, CRCs, and acknowledgment messages are implemented to ensure reliable data transfer.
   • Presentation Layer: Primarily deals with data formatting and translation.

Verify and Summarize

6. After reviewing the roles of each layer, it is clear that the Data Link Layer is responsible for error control.

Final Answer

The correct answer is c. Data Link.