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Module 1: Physical Layer & Data Communication

20202m

Frames from one LAN can be transmitted to another LAN via the device

(i) Router
(ii) Bridge
(iii) Repeater
(iv) Modem

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Answer

(ii) Bridge

Explanation

A bridge operates at the Data Link layer and connects LAN segments. It forwards Ethernet frames between LANs using MAC addresses.

  • Bridge: connects LAN segments and forwards frames based on MAC addresses.
  • Router: operates at the Network layer and forwards packets between IP networks.
  • Repeater: regenerates physical-layer signals but does not make forwarding decisions based on addresses.
  • Modem: performs modulation/demodulation for transmission over certain communication media.

Because the question specifically asks about transmitting frames from one LAN to another LAN, the expected answer is Bridge.

Final answer: (ii) Bridge.

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