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Nokia 4A0-100 Exam - Topic 6 Question 112 Discussion

Actual exam question for Nokia's 4A0-100 exam
Question #: 112
Topic #: 6
[All 4A0-100 Questions]

What happens immediately after an Ethernet switch receives an Ethernet frame?

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Suggested Answer: B

by Ben at Jun 13, 2025, 04:30 PM

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Casey
2 months ago
I thought it just sent it out directly, not sure about this flooding thing.
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Paris
2 months ago
Totally agree, that's how it learns!
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Isreal
3 months ago
It definitely logs the source MAC too, that's key for the switch!
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Isaiah
3 months ago
Wait, does it really flood the frame if it doesn't know the destination?
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Eleonora
3 months ago
It records the destination MAC address and the interface it came from.
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Kiley
3 months ago
I’m leaning towards option A, but I also remember something about transmitting the frame out of the right interface. It’s confusing!
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Loren
4 months ago
I feel like the switch does something with the MAC addresses, but I can't recall if it floods the frame or just records the info first.
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Jennie
4 months ago
I remember a practice question where it asked about what happens after receiving a frame, and I think it was about flooding the frame if the destination MAC isn't known.
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Delpha
4 months ago
I think the switch first records the source MAC address, but I'm not entirely sure if it also logs the destination at that point.
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Elvera
4 months ago
I've got this one! The answer is D. The switch transmits the frame out the appropriate interface based on its forwarding table.
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Jeannine
4 months ago
Okay, let me think this through. I believe the correct answer is C - the switch floods the frame out of all its interfaces except the one it came in on. That way it can learn where devices are located on the network.
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Jaime
5 months ago
Hmm, I'm a bit unsure about this one. I think it might be A, where the switch records the destination MAC address and interface. But I'm not 100% confident.
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Silvana
5 months ago
I'm pretty sure the answer is B. The switch needs to record the source MAC address and the interface it came in on to build its forwarding table.
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Carissa
8 months ago
I believe the switch then transmits the frame out of the appropriate interface.
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Marion
8 months ago
I agree with Goldie. It helps the switch determine where to forward the frame.
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Gregoria
8 months ago
D? Really? The switch doesn't transmit the frame, it just forwards it out the appropriate interface. These options are a bit off.
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Antonio
8 months ago
C is the correct answer. Ethernet switches flood frames out of all interfaces except the one they came in on until they learn the destination MAC address.
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Patti
6 months ago
C is the correct answer.
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Lauran
7 months ago
It does this until it learns the destination MAC address.
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Douglass
7 months ago
The switch floods frames out of all interfaces except the one they came in on.
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Goldie
8 months ago
I think the switch records the destination MAC address and the interface on which it arrived.
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Valentin
8 months ago
Wait, isn't the switch supposed to be a 'smart' device? Flooding everything except the input port seems kind of dumb to me.
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Reita
7 months ago
Once the switch learns the MAC address, it will then forward future frames directly to that port.
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Cassie
7 months ago
This helps ensure the frame reaches its intended destination, even if the switch doesn't have the destination MAC address in its table.
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Kiley
7 months ago
It's actually a common practice for switches to flood frames to all ports except the one it was received on.
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Lashawn
8 months ago
I think the answer is B. Ethernet switches need to learn the source MAC addresses and the interfaces they come in on to build their forwarding tables.
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Jamika
8 months ago
After that, the switch will update its forwarding table with the source MAC address and port information.
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Tegan
8 months ago
Yes, you are correct. The switch will examine the source MAC address and the port it came from.
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