What is the primary function of the OSI model's

Q: Answer-What is the primary function of the OSI model's transport layer?

The transport layer Layer 4 of the OSI model is responsible for managing end-to-end communication between devices. This layer ensures that data is transferred reliably and efficiently, managing flow control, error detection, and retransmission. It handles segmentation of data for transmission, reassembly upon arrival, and keeps track of data integrity. Protocols like TCP Transmission Control Protocol and UDP User Datagram Protocol operate at this layer. Option A is incorrect because encryptiondecryption happens at the presentation layer Layer 6. Option B is incorrect as the physical transmission of data occurs at the physical layer Layer 1. Option D is incorrect defining physical topologies is related to the data link and physical layers. Option E is incorrect because packet routing occurs at the network layer Layer 3.

transport layer?

A Data encryption and decryption Correct Answer Incorrect Answer

B Physical transmission of data Correct Answer Incorrect Answer

C Establishing, managing, and terminating connections between applications Correct Answer Incorrect Answer

D Defining physical network topologies Correct Answer Incorrect Answer

E Packet routing between devices on different networks Correct Answer Incorrect Answer

Solution

The transport layer (Layer 4) of the OSI model is responsible for managing end-to-end communication between devices. This layer ensures that data is transferred reliably and efficiently, managing flow control, error detection, and retransmission. It handles segmentation of data for transmission, reassembly upon arrival, and keeps track of data integrity. Protocols like TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) operate at this layer. Option A is incorrect because encryption/decryption happens at the presentation layer (Layer 6). Option B is incorrect as the physical transmission of data occurs at the physical layer (Layer 1). Option D is incorrect; defining physical topologies is related to the data link and physical layers. Option E is incorrect because packet routing occurs at the network layer (Layer 3).

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SBI SO (Systems)

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