Cisco CCNA Service Provider Question of the Week

CCNASPofw02Which equipment type helps eliminate collisions?

    1. Repeater
    2. Hub
    3. Bridge
    4. Extender
    5. Transceivers

The correct answer is 3.

To break a layer into multiple segments, it takes a device operating at the next layer. In this case, a collision domain is a Layer 1 thing, so it takes a Layer 2 device. In the previous list, all devices, except the bridge, are Layer 1 devices. The bridge is the only Layer 2 device, and every port on a bridge is a separate collision domain and helps reduce the number of collisions. If you only had one device per bridge port, you could then configure full duplex and completely eliminate collisions.

Related Courses:
SPNGN1 – Building Cisco Service Provider Next-Generation Networks, Part 1
SPNGN2 – Building Cisco Service Provider Next-Generation Networks, Part 2

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