Logical addressing of devices occurs at which OSI model layer?

Logical addressing of devices occurs at which OSI model layer?

• A. One.
• B. Two.
• C. Three.
• D. Four.

Answer: (C)

Logical addressing of devices occurs at the third layer of the OSI model, which is the Network layer. This layer is responsible for the logical addressing and routing of data packets across multiple networks. Each device on a network is assigned a unique logical address, such as an IP address, which is used by routers to determine the best path for data delivery. The Network layer handles the forwarding of packets based on these logical addresses, allowing for communication between devices on different networks. This is essential for efficient data transmission over large-scale networks, and it enables the proper functioning of the Internet as we know it. In contrast, the other layers focus on different aspects of communication; for example, the first layer (Physical) deals with the physical connection and transmission of raw bits, while the second layer (Data Link) focuses on node-to-node data transfer and handling of errors. The fourth layer (Transport) is responsible for end-to-end communication, flow control, and error recovery but does not specifically address the logical addressing of devices.

Logical addressing of devices occurs at the third layer of the OSI model, which is the Network layer. This layer is responsible for the logical addressing and routing of data packets across multiple networks. Each device on a network is assigned a unique logical address, such as an IP address, which is used by routers to determine the best path for data delivery.

The Network layer handles the forwarding of packets based on these logical addresses, allowing for communication between devices on different networks. This is essential for efficient data transmission over large-scale networks, and it enables the proper functioning of the Internet as we know it.

In contrast, the other layers focus on different aspects of communication; for example, the first layer (Physical) deals with the physical connection and transmission of raw bits, while the second layer (Data Link) focuses on node-to-node data transfer and handling of errors. The fourth layer (Transport) is responsible for end-to-end communication, flow control, and error recovery but does not specifically address the logical addressing of devices.