Discuss Cisco 200-901 Exam Topic 2 Question 110

What is the function of an Ethernet switch in a networking environment?

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

Suggested Answer: B

An Ethernet switch operates at the Data Link layer (Layer 2) of the OSI model. Its primary function is to forward frames between devices based on their MAC (Media Access Control) addresses. When a frame arrives at the switch, the switch reads the destination MAC address and forwards the frame to the appropriate port that connects to the device with that MAC address.

MAC Address Table: Switches maintain a MAC address table that maps each MAC address to a specific port. This table is built dynamically as the switch learns the MAC addresses of devices connected to its ports.

Frame Switching: By using the MAC address table, the switch can efficiently switch frames only to the destination port, which reduces unnecessary traffic on other ports and improves network performance.

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Cisco Ethernet Switch Operation

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12 comments · newest first

Lashawn 3 months ago

I feel like A is misleading. IP is for routing, not switching.

Stephaine 3 months ago

Agreed! MAC is key for local traffic.

Weldon 3 months ago

I think it's B. It uses MAC addresses to switch frames.

Vesta 3 months ago

Totally agree, B is the right answer!

Glory 4 months ago

No way, it's not for blocking traffic!

Ilda 4 months ago

Wait, I thought they used IP addresses too?

Meaghan 5 months ago

Definitely B, that's how switches work.

Troy 6 months ago

It's all about MAC addresses!

Elsa 6 months ago

I feel like the switch's main job is to direct traffic based on MAC addresses, so I’d go with B too.

Margret 6 months ago

I’m a bit confused about the difference between MAC and IP addresses in this context. Does the switch really use MAC?

Viva 7 months ago

I remember practicing a question like this, and I think the answer is B. It definitely has to do with MAC addresses.

Victor 7 months ago

I think the switch uses MAC addresses, but I'm not completely sure if that's the only thing it does.

Cisco 200-901 Exam - Topic 2 Question 110 Discussion