The Kubernetes yaml shown below describes a networkPolicy. Will the networkPolicy BLOCK this traffic? Solution: a request issued from a pod lacking the tier: api label, to a pod bearing the tier: back

The NetworkPolicy blocks this traffic, indicating that a policy applies to the destination `tier: backend` pod, and its `ingress` rules are configured to *only* permit traffic from pods explicitly matching specific labels (e.g., `tier: api`). Consequently, any traffic originating from a pod *lacking* the `tier: api` label would be denied ingress to the `tier: backend` pod.

If the traffic were not blocked, the NetworkPolicy would either not apply to the `tier: backend` pod, or its `ingress` rules would explicitly allow traffic from any pod, or specifically from pods that lack the `tier: api` label.