Rearrange the following sequence in the context of OSI Layers: A. Transforming…
2022
Rearrange the following sequence in the context of OSI Layers:
A. Transforming the raw bits in the form of frame for transmission
B. Transmission of raw bits over communication channel
C. Handling user interfaces
D. Control and monitoring of subnet
E. Transmission data through connection oriented or connection less using datagrams
Choose the correct answer from the options given below:
- A.
A-B-C-D-E
- B.
B-C-D-E-A
- C.
B-A-D-E-C
- D.
A-B-D-E-C
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Show answer & explanation
Correct answer: C
Correct sequence (from lowest/closest to the physical medium up to user-facing layer): B-A-D-E-C
B: Transmission of raw bits over communication channel — Physical layer (layer 1). Responsible for electrical/optical signaling and physical transmission of bits.
A: Transforming the raw bits in the form of frame for transmission — Data Link layer (layer 2). Handles framing, error detection, and node-to-node delivery.
D: Control and monitoring of subnet — Network layer (layer 3). Manages routing, logical addressing, and subnet control.
E: Transmission of data using connection-oriented or connectionless datagrams — Transport layer (layer 4). Provides end-to-end communication (e.g., TCP = connection-oriented, UDP = connectionless).
C: Handling user interfaces — Application layer (layer 7). Interfaces directly with user applications and provides network services to them.
Why other sequences are wrong: any sequence that places framing before physical transmission, or places application-level functions below lower-layer services, violates the OSI layering order. Remember the low-to-high order: Physical → Data Link → Network → Transport → (Session → Presentation) → Application.
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