200-901 · Question #374
What is the function of an Ethernet switch in a networking environment?
The correct answer is B. to switch a frame from one port to another port based on MAC address. An Ethernet switch operates at Layer 2 (Data Link layer) of the OSI model and forwards (switches) frames between ports based on MAC (Media Access Control) addresses. It maintains a MAC address table (CAM table) that maps MAC addresses to specific switch ports. When a frame…
Question
What is the function of an Ethernet switch in a networking environment?
Options
- Ato switch a frame from one port to another port based on IP address
- Bto switch a frame from one port to another port based on MAC address
- Cto provide IP addressing to connected hosts
- Dto block unwanted traffic
How the community answered
(14 responses)- B93% (13)
- D7% (1)
Explanation
An Ethernet switch operates at Layer 2 (Data Link layer) of the OSI model and forwards (switches) frames between ports based on MAC (Media Access Control) addresses. It maintains a MAC address table (CAM table) that maps MAC addresses to specific switch ports. When a frame arrives, the switch reads the destination MAC address and forwards it only to the appropriate port, reducing unnecessary traffic. Option A describes routing behavior (IP-based forwarding), which is a Layer 3 function performed by routers. Option C (IP addressing) is the role of DHCP servers. Option D (blocking unwanted traffic) describes a firewall's function. The switch's defining characteristic is MAC address-based frame forwarding.
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