Q: 8
When configuring a network switch, which of the following is used to identify a specific port on the
switch?
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Discussion
D . Official guides and networking labs always point to MAC address for unique port identification, so I'd review those if anyone's unsure.
Isn't there a nitpick here if the question means by admin or logical grouping instead of technical mapping? VLANs (B) can sometimes "identify" ports when segmenting for access policy, but for how switches physically map traffic, it's definitely D. I've seen similar questions twist on this point, so just checking if anyone's read it that way.
D makes the most sense since switches use MAC addresses to map devices to their specific physical port (in the MAC address table). IP and VLAN are more about logical structure, not direct port ID. Pretty sure that's what they're testing here, but open to other ideas.
Is anyone else a bit confused by the wording here? To me, port identification at the switch level usually means interface label (like Gi0/1), not MAC address. MACs are mapped to ports in the forwarding table, but don't literally identify the hardware port. Is D really what they're after or are they oversimplifying?
A is wrong, D. MAC address is what the switch uses to identify each device or port directly connected to it. IP addresses and VLANs relate more to network segmentation and logical addressing, not physical port identification.
B tbh. VLANs are also used to segment and identify ports within groups, so I thought that could play a role here. Maybe I'm confusing logical grouping with unique identification, but I always see VLAN config tied to port setup. Could be off though.
D imo. Every official switch config guide and lab I've used always points to the MAC address as what the switch uses to map frames to specific ports via the CAM table. VLAN and IP don't directly tie to a single port. Check any vendor practice test or hands-on sim if you're unsure, that's where I picked it up. Open to other views if I'm missing something.
C/D? I've seen similar exam questions where "identify a port" could throw you off if you think about admin labeling but for how switches actually map traffic, D (MAC address) is pretty standard. Unless they want interface names but that's not an option.
Probably D here. Port and MAC address pairing is what switches track in their CAM tables. Unless I missed a trick?
C/D? I get why most pick D since MACs show up in the switch's CAM table. Still, switch ports are usually referenced by their physical interface label not just a MAC. Maybe I'm overthinking it but D seems closest.
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