Question: what is a switch that works at more than one layer of the osi model called
[{'answer': 'layer - 3 switches'}, {'answer': 'multilayer switches', 'provenance': [{'wikipedia_id': '40614', 'title': 'Network switch', 'start_paragraph_id': 2, 'start_character': 331, 'end_paragraph_id': 2, 'end_character': 350, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40614', 'title': 'Network switch', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 350, 'bleu_score': 0.9036816878108531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18175800578990253162}, 'section': 'Section::::Abstract.'}]}]