Which OSI layer determines the route a packet takes from sender to receiver?1 point7134

The OSI (Open Systems Interconnection) model is a conceptual framework used to understand and implement network protocols in seven layers. Each layer has specific functions and responsibilities. To determine which OSI layer is responsible for determining the route a packet takes from sender to receiver, follow these steps:

1. Understand the OSI Layers: The OSI model consists of seven layers:

   • Layer 1: Physical
   • Layer 2: Data Link
   • Layer 3: Network
   • Layer 4: Transport
   • Layer 5: Session
   • Layer 6: Presentation
   • Layer 7: Application

2. Identify the Function of Each Layer:

   • Physical Layer: Deals with the physical connection between devices and the transmission of binary data over physical media.
   • Data Link Layer: Handles error detection and correction, as well as framing and addressing on the local network.
   • Network Layer: Responsible for logical addressing, routing, and forwarding of packets across different networks.
   • Transport Layer: Ensures reliable data transfer, error recovery, and flow control.
   • Session Layer: Manages sessions or connections between applications.
   • Presentation Layer: Translates data between the application layer and the network, including encryption and compression.
   • Application Layer: Provides network services directly to end-user applications.

3. Determine the Routing Function:

   • The routing of packets involves determining the best path for data to travel from the sender to the receiver across multiple networks. This function includes logical addressing (such as IP addresses) and the use of routing protocols to find the optimal path.

4. Identify the Responsible Layer:

   • The Network Layer (Layer 3) is responsible for routing packets. It uses logical addressing and routing protocols to determine the best path for data to travel from the sender to the receiver.

Therefore, the OSI layer that determines the route a packet takes from sender to receiver is the Network Layer (Layer 3).