M

Mr. Dubey • 100.64K Points
Coach Computer

Q. Data which is routed between networks or from node to node within networks requires only the functions of OSI

  • (A) Layers 1 and 2
  • (B) Layers 1 through 3
  • (C) All layers
  • (D) None of the above
  • Correct Answer - Option(B)
  • Views: 1411
  • Filed under category Computer
Explanation by: Mr. Dubey

When data is routed between networks or from node to node within networks, it primarily requires the following OSI layers:

  • Layer 1: Physical Layer – deals with the actual physical connection (wires, cables, etc.).
  • Layer 2: Data Link Layer – responsible for node-to-node data transfer, error detection, and correction.
  • Layer 3: Network Layer – handles routing, addressing, and packet forwarding (like IP addressing and routing).

These three layers (1-3) are crucial for ensuring that data can be transmitted across different networks. Higher layers (4-7) focus on application, presentation, and session functions, which are not directly involved in basic data routing and transmission.

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