PCNE Configuring Network Services Practice Question
A company uses Cloud DNS with a managed zone for 'example.com'. They want to implement a failover routing policy so that if the primary health check fails, traffic is sent to a secondary IP. Which THREE resources need to be configured? (Choose three.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A DNS record set of type A with a routing policy
To set up failover routing, you need a health check for the primary endpoint, a DNS record set with a routing policy that specifies the primary and secondary targets, and the routing policy configured with failover type. A network tag is not used in DNS. A load balancer is not required; failover routing can point directly to IP addresses.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A DNS record set of type A with a routing policy
Why this is correct
The record set defines the DNS name and routing behavior.
- ✓
A health check for the primary endpoint
Why this is correct
Required to monitor the primary endpoint health.
- ✗
A network tag on the Compute Engine instances
Why it's wrong here
Network tags are for firewall rules, not DNS routing.
- ✗
A load balancer to front the endpoints
Why it's wrong here
Failover routing can work without a load balancer, using IP addresses directly.
- ✓
A failover routing policy configured on the record set
Why this is correct
Specifies primary and secondary targets and health check.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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