Choose the best matching between Group 1 and Group 2. Group-1 Group-2 P. Data…

2004

Choose the best matching between Group 1 and Group 2. 

   Group-1   	  	  Group-2   
 P. Data link          1. Ensures reliable transport of data
                           over a physical point-to-point link
 Q. Network layer      2. Encoder/decodes data for physical
                          transmission
 R. Transport layer    3. Allows end-to-end communication
                          between two processes
                       4. Routes data from one network
                          node to the next

Answer: A. P-1, Q-4, R-3 — Answer: Data Link → Ensures reliable transport of data over a physical point-to-point link; Network → Routes data from one network node to the next; Transport…

  1. A.

    P-1, Q-4, R-3

  2. B.

    P-2, Q-4, R-1

  3. C.

    P-2, Q-3, R-1

  4. D.

    P-1, Q-3, R-2

Attempted by 187 students.

Show answer & explanation

Correct answer: A

Answer: Data Link → Ensures reliable transport of data over a physical point-to-point link; Network → Routes data from one network node to the next; Transport → Allows end-to-end communication between two processes.

  • Data Link layer: Ensures reliable transport over a single physical link by providing framing, error detection, and retransmission when needed.

  • Network layer: Routes data from one network node to the next, handling logical addressing (for example, IP addresses) and path selection (routing).

  • Transport layer: Provides end-to-end communication between two processes on hosts, offering segmentation, port addressing, and optional reliability (for example, TCP vs UDP).

Note: "Encoder/decodes data for physical transmission" describes the Physical layer (it converts bits to signals and vice versa), so that item does not match Data Link or Transport.

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