Which TCP/IP layer is responsible for end-to-end connectivity between applications?

Which TCP/IP layer is responsible for end-to-end connectivity between applications?

• A. Transport
• B. Application
• C. Network Access
• D. Internet

Answer: (A)

The Transport layer is responsible for end-to-end connectivity between applications in a TCP/IP model. This layer ensures that data is transferred accurately and reliably from one application on a device to another application on a different device. It manages the flow of data, segments messages, and can provide error-checking and retransmission of lost packets to guarantee that the data arrives as intended. Protocols such as Transmission Control Protocol (TCP) and User Datagram Protocol (UDP), which operate at this layer, facilitate communication between applications by establishing connections and managing data transfer processes. In essence, the Transport layer is crucial for maintaining communication channels between applications, making it integral to overall network functionality. The other layers, including Application, Network Access, and Internet, have different roles. The Application layer is focused on user-facing services and applications, the Network layer is responsible for routing packets across networks, and the Network Access layer deals with the physical transmission of data. Each layer plays a distinct role, but it is the Transport layer that specifically ensures end-to-end connectivity for applications.

The Transport layer is responsible for end-to-end connectivity between applications in a TCP/IP model. This layer ensures that data is transferred accurately and reliably from one application on a device to another application on a different device. It manages the flow of data, segments messages, and can provide error-checking and retransmission of lost packets to guarantee that the data arrives as intended.

Protocols such as Transmission Control Protocol (TCP) and User Datagram Protocol (UDP), which operate at this layer, facilitate communication between applications by establishing connections and managing data transfer processes. In essence, the Transport layer is crucial for maintaining communication channels between applications, making it integral to overall network functionality.

The other layers, including Application, Network Access, and Internet, have different roles. The Application layer is focused on user-facing services and applications, the Network layer is responsible for routing packets across networks, and the Network Access layer deals with the physical transmission of data. Each layer plays a distinct role, but it is the Transport layer that specifically ensures end-to-end connectivity for applications.