Which Open System Interconnection (OSI) model layer handles data in bits?

Which Open System Interconnection (OSI) model layer handles data in bits?

• A. Physical.
• B. Network.
• C. Data link.
• D. Transport.

Answer: (A)

The layer of the OSI model that handles data in bits is the Physical layer. This is the first layer of the OSI model, and it is responsible for the actual transmission of raw binary data over a physical medium such as electrical cables, fiber optics, or wireless signals. The Physical layer defines the hardware elements involved in the data transmission process, such as voltage levels, timing, and data rates. In this layer, information is represented in bits and is concerned with the physical connection between devices, as well as the signaling and the transfer rates between networks. This foundational layer enables higher layers of the OSI model to function by providing the means for the data to be transmitted and received correctly. The other layers specified involve different aspects of data handling. The Data Link layer, for example, works with frames and is responsible for node-to-node data transfer and error detection. The Network layer focuses on packet routing and addressing, while the Transport layer is concerned with end-to-end communication and data flow control. Each of these layers has its specific roles and operates at a higher level than the Physical layer, which is strictly about the transmission of bits.

The layer of the OSI model that handles data in bits is the Physical layer. This is the first layer of the OSI model, and it is responsible for the actual transmission of raw binary data over a physical medium such as electrical cables, fiber optics, or wireless signals. The Physical layer defines the hardware elements involved in the data transmission process, such as voltage levels, timing, and data rates.

In this layer, information is represented in bits and is concerned with the physical connection between devices, as well as the signaling and the transfer rates between networks. This foundational layer enables higher layers of the OSI model to function by providing the means for the data to be transmitted and received correctly.

The other layers specified involve different aspects of data handling. The Data Link layer, for example, works with frames and is responsible for node-to-node data transfer and error detection. The Network layer focuses on packet routing and addressing, while the Transport layer is concerned with end-to-end communication and data flow control. Each of these layers has its specific roles and operates at a higher level than the Physical layer, which is strictly about the transmission of bits.