PCA (Prometheus Certified Associate) sample exam question with answer 260

Question:
Which query below will get all time series for metric node_disk_read_bytes_total for job=web, and job=node?

1. node_disk_read_bytes_total{job="web", job="node"}
2. node_disk_read_bytes_total{job="web|node"}
3. node_disk_read_bytes_total{job=~"web|node"}
4. node_disk_read_bytes_total{job=~"web + node"}

Answer:
C - correct answer, check more at instant vector selectors