Explain the difference between collision domains and broadcast domains and how switches and routers affect them.

• A. Collision domains are separate from broadcast domains; switches segment collision domains per port, routers segment both collision and broadcast domains, VLANs can segment broadcast domains.
• B. Collision domains and broadcast domains are the same; switches enlarge both, routers shrink both.
• C. VLANs only affect collision domains; routers only affect broadcast domains.
• D. Routers segment collision domains per port; switches segment broadcast domains only.

Answer: (A)