Question: what layer of the osi model do vlans use
[{'answer': 'OSI layer 2', 'provenance': [{'wikipedia_id': '101416', 'title': 'Virtual LAN', 'start_paragraph_id': 7, 'start_character': 117, 'end_paragraph_id': 7, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::Uses.\n'}]}, {'provenance': [{'wikipedia_id': '101416', 'title': 'Virtual LAN', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 723, 'bleu_score': 0.9243004410966761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2988621504032627545}, 'section': 'Section::::Abstract.'}]}]