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SSC CGL 2026 PYQ — Question 142

SSC CGL Tier II - 19 Jan 2026 - Shift 1 • Computer • Q142

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In the OST model, which layer is responsible for routing packets across different networks using logical addressing

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Correct answer: A

Explanation

The correct answer is Option 1, i.e., Network Layer.

In the OSI (Open Systems Interconnection) model, the Network Layer (Layer 3) is responsible for:

  • Routing packets between different networks
  • Using logical addressing (IP addresses)
  • Determining the best path for data transmission
  • Handling packet forwarding and routing decisions

Example protocols: IP (Internet Protocol)