Question: arp operates at which layer of the osi model
[{'answer': 'layer 3', 'provenance': [{'wikipedia_id': '47986', 'title': 'Address Resolution Protocol', 'start_paragraph_id': 39, 'start_character': 363, 'end_paragraph_id': 39, 'end_character': 370, 'bleu_score': 1.0, 'section': 'Section::::Inverse ARP and Reverse ARP.\n'}]}, {'provenance': [{'wikipedia_id': '47986', 'title': 'Address Resolution Protocol', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 301, 'bleu_score': 0.556763648003863, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16276092749017706219}, 'section': 'Section::::Operating scope.\n'}]}]