Networking第 55 / 100 题
What device connects multiple devices within a single local network and forwards frames based on MAC addresses?
a.A modem
b.A router
c.A switch
d.A firewall
解析
A switch connects devices within the same local network and uses MAC addresses to forward frames only to the intended port. This makes it more efficient than an older hub, which broadcast to all ports. Switches operate primarily at the data link layer.
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