New Year Sale 2026! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

Nokia 4A0-C02 Exam - Topic 9 Question 112 Discussion

Actual exam question for Nokia's 4A0-C02 exam
Question #: 112
Topic #: 9
[All 4A0-C02 Questions]

How is MAC learning achieved in traditional Ethernet switches?

Show Suggested Answer Hide Answer
Suggested Answer: D

by Gail at Jul 04, 2025, 02:33 AM

Limited Time Offer

25%

Off

Get Premium 4A0-C02 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

0/2000 characters
Submit Cancel
Lorrine
2 months ago
Wait, really? I always thought it was the other way around!
upvoted 0 times
...
Silva
2 months ago
Nah, it's B for sure. That's how switches learn MACs.
upvoted 0 times
...
Cecil
3 months ago
I thought it was C? SA on the way out makes more sense.
upvoted 0 times
...
Xuan
3 months ago
Totally agree with B! Makes the most sense in practice.
upvoted 0 times
...
Coletta
3 months ago
It's definitely B! DA gets logged as frames come in.
upvoted 0 times
...
Eliz
3 months ago
I believe the source address is what gets added to the FDB as frames enter the switch, which makes me think option D is correct.
upvoted 0 times
...
Halina
4 months ago
I’m a bit confused. I thought it was the destination address that gets populated, but now I’m not so certain.
upvoted 0 times
...
Hortencia
4 months ago
I remember practicing a question like this, and I think it was about the source address being added to the FDB as frames enter the switch. So, maybe D?
upvoted 0 times
...
Kanisha
4 months ago
I think MAC learning happens when frames enter the switch, so I’m leaning towards option B, but I’m not entirely sure.
upvoted 0 times
...
Martina
4 months ago
I'm feeling confident about this one. The switch learns MAC addresses by adding the destination address (DA) to the FDB as frames leave the switch, not as they enter. So the correct answer is option A.
upvoted 0 times
...
Jose
4 months ago
Okay, I remember learning about this in class. The switch learns MAC addresses by populating the FDB with the source address (SA) of frames as they enter the switch. So the correct answer is option D.
upvoted 0 times
...
Lorrie
5 months ago
Hmm, I'm a bit confused on this one. I know MAC learning has to do with the switch learning MAC addresses, but I'm not sure if it's the destination address (DA) or source address (SA) that gets added to the FDB. I'll have to think this through carefully.
upvoted 0 times
...
Tresa
5 months ago
I'm pretty sure MAC learning is about populating the Forwarding Database (FDB) as frames enter the switch, so I'll go with option B.
upvoted 0 times
...
Gene
7 months ago
I think Laurel is right. It makes sense for the DA to be populated as frames enter the switch.
upvoted 0 times
...
Laurel
7 months ago
Hmm, I'm not sure about that. I think it's when frames enter the switch.
upvoted 0 times
...
Loreta
7 months ago
I believe it's when frames leave the switch, the SA is populated into the FDB.
upvoted 0 times
...
Gene
7 months ago
I agree with Laurel, the DA is populated into the FDB as frames enter the switch.
upvoted 0 times
...
Laurel
7 months ago
I think MAC learning is achieved when frames enter the switch.
upvoted 0 times
...
Julene
7 months ago
I'm going with B. It just makes sense that the switch would learn the destination MAC as the frames come in, not as they go out. How else would it know where to send them?
upvoted 0 times
...
Juan
8 months ago
Haha, I bet the answer is B. Otherwise, the switch would be trying to learn the MAC address of frames that have already left the building!
upvoted 0 times
Estrella
6 months ago
User2: Yeah, that makes sense. It wouldn't make sense to learn MAC addresses of frames that have already left.
upvoted 0 times
...
Felicitas
7 months ago
User1: I think the answer is B, as frames enter the switch.
upvoted 0 times
...
...
Jonell
8 months ago
Hmm, I thought it was D. Wouldn't the switch need to learn the source MAC address to build its forwarding table?
upvoted 0 times
...
Steffanie
8 months ago
I'm pretty sure it's B. The MAC address of the destination device is learned as frames enter the switch, not as they leave.
upvoted 0 times
Sabina
7 months ago
User 3: So, the switch learns where to forward frames based on the MAC address of the incoming frames?
upvoted 0 times
...
Sherrell
7 months ago
User 2: Yes, that's correct. The destination address is populated into the FDB when frames come in.
upvoted 0 times
...
Tora
7 months ago
User 1: I think it's B too. The MAC address is learned as frames enter the switch.
upvoted 0 times
...
...

Save Cancel