# Which Cilium resource defines the IP ranges that Cilium hands out to Services of type LoadBalancer?

Cilium, Hard (Expert), Networking. https://k8wiz.com/uquiz/which-cilium-resource-defines-the-ip-ranges-that-cilium-hands-out-to-services-of-type-loadbalancer

- A. CiliumNode
- B. CiliumLoadBalancerIPPool
- C. CiliumEndpointSlice
- D. CiliumEgressGatewayPolicy

**Answer:** CiliumLoadBalancerIPPool

**Explanation:** LB IPAM assigns external IPs to LoadBalancer Services from the CiliumLoadBalancerIPPool resources you create, and a pool can be limited to certain Services with a serviceSelector. Assigning an IP doesn't make it reachable. Cilium announces it with the BGP control plane or with L2 announcements over ARP and NDP.