1topology_description: 2 type: LoadBalanced 3 servers: 4 - &1 5 address: g:27017 6 avg_rtt_ms: 0 7 type: LoadBalancer 8operation: read 9read_preference: 10 mode: Secondary 11 tag_sets: 12 - data_center: nyc 13suitable_servers: 14- *1 15in_latency_window: 16- *1