Which interfaces on a MikroTik router share the same collision bandwidth?

• A. Wireless
• B. Ethernet
• C. SFP
• D. EOIP

Answer: (A)

The key idea is that wireless radio links are a shared medium. All devices using the same wireless channel contend for airtime, so the available bandwidth is effectively shared among them and access is governed by CSMA/CA. That makes the collision bandwidth, the portion of capacity affected by contention, shared across all wireless clients on that channel.

Ethernet ports, SFP links, and EOIP tunnels are typically point-to-point, often full-duplex paths with their own separate media. They don’t share a single collision domain with other interfaces in normal router configurations, so their bandwidth isn’t shared in the same way as wireless traffic.

So, wireless interfaces are the ones that share the same collision bandwidth.