Layer 2 Switch Characteristic: VLAN Segmentation via Tagging
What is a characteristic of a Layer 2 switch?
Community Votes
100% of anonymous learners picked answer D. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
The L2 switch's segmentation mechanism is VLAN tagging (802.1Q), not stateful/L3/L4 awareness — those belong to firewalls or L3/L4 devices.
A Layer 2 switch forwards on MAC addresses and segments a broadcast domain using VLANs, carried across trunks by 802.1Q tagging. It is connectionless at L2 and does not track TCP sessions or filter on transport-layer protocols.
Picking A/B/C: tracking TCP connections (A), stateful info (B), and transport-layer filtering (C) are firewall/L3-L4 behaviors, not L2 switch functions.
Community Discussion (3 comments)
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Expert Analysis
Why the Answer Is Correct
D is correct. A defining Layer 2 switch characteristic is segmenting the network with tagging protocols — 802.1Q VLAN tags — to separate broadcast domains across a trunk.Why the Other Options Are Wrong
A is wrong: tracking TCP connections is stateful firewall/L4 behavior. B is wrong: maintaining stateful transaction information is not an L2 switch role. C is wrong: filtering on a transport-layer protocol is L4, not L2 switching.Community Comment Notes
The vote is D (100). Commenters translate 'tagging protocols' plainly as VLANs and note Cisco describes L2 switches as supporting segmentation via tagging.Official Reference
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