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BGP and External Networking Questions

Practice questions for BGP and External Networking topic in Cilium Certified Associate. 12 questions covering this domain.

12 questions4 easy8 medium
Q1
easy

What is the main role of Cilium BGP Control Plane?

Q2
medium

What does LB IPAM do in Cilium?

Q3
medium

A BGP peer session is up, but no prefixes are being advertised. Which explanation matches the Cilium docs?

Q4
easy

An operator wants to peer Cilium with an upstream BGP router to advertise pod CIDR routes. Which Kubernetes custom resource does the operator configur...

Q5
medium

A platform team uses Cilium's Egress Gateway feature to ensure that all outbound traffic from a specific set of pods always exits the cluster through ...

Q6
medium

A network team wants to use Cilium's L2 Announcements feature to make LoadBalancer Service IPs reachable on a flat Layer 2 network without BGP. Which ...

Q7
easy

Which loadBalancerClass should a Service use to select Cilium Node IPAM LB?

Q8
medium

Why do the L2 Announcements docs warn against using a Service with externalTrafficPolicy set to Local?

Q9
medium

A cluster runs Cilium in IPv6-only mode. What can the BGP Control Plane advertise?

Q10
medium

A Service uses Cilium Node IPAM LB. The chosen nodes do not have ExternalIP addresses configured. Which addresses will Node IPAM advertise instead?

Q11
easy

Which loadBalancerClass must a Service use to opt into Cilium Node IPAM LoadBalancer behavior?

Q12
medium

An administrator creates two CiliumLoadBalancerIPPools with overlapping CIDRs. What happens according to the LB IPAM docs?

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