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 nextAnswer: 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…
- A.
P-1, Q-4, R-3
- B.
P-2, Q-4, R-1
- C.
P-2, Q-3, R-1
- D.
P-1, Q-3, R-2
Attempted by 138 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.