Networking ConceptsCâu 17 / 100
Which network device forwards frames based on MAC address tables and operates primarily at Layer 2?
a.Router
b.Firewall
c.Load balancer
d.Switch
Giải thích
A switch builds a MAC address table and forwards frames only to the port associated with the destination MAC, operating at Layer 2. Routers work at Layer 3 using IP addresses. Switching reduces collisions by creating dedicated collision domains per port.
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