Define Bridge in Computer Networks
This question asks about a specific network device connecting LAN segments. It tests hardware-level networking knowledge.
Why Interviewers Ask This
Bridges are foundational network devices. Interviewers check if you understand segment collision domains and MAC addressing. This is relevant for network troubleshooting.
How to Answer This Question
Define a bridge as a device connecting two network segments at the data link layer. Explain MAC address filtering. Mention collision domain separation. Compare with switches. Note that bridges are largely replaced by switches now.
Key Points to Cover
- Data link layer function
- MAC address filtering
- Collision domain separation
- Bridge vs switch
Sample Answer
A bridge is a network device that connects two local area network segments at the data link layer. It filters traffic based on MAC addresses, forwarding frames only to the destination segment. This reduces collisions and improves network performance by isolating collision domains. While bridges are effective, modern networks typically use switches, which are essentially multi-port bridges with higher performance and intelligence.
Common Mistakes to Avoid
- Confusing with routers
- Ignoring MAC filtering
- Not mentioning collision domains
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