ANS-C01 · Question #80
A Network Engineer is provisioning a subnet for a load balancer that will sit in front of a fleet of application servers in a private subnet. There is limited IP space left in the VPC CIDR. The…
The correct answer is C. Use two /28 subnets for a Network Load Balancer in different Availability Zones. If you enable cross-zone load balancing, each load balancer node distributes traffic across the registered targets in all enabled Availability Zones. Effectively double the number of connections possible to your backend fleet. Scale the fleet (even in a single AZ) accordingly…
Question
A Network Engineer is provisioning a subnet for a load balancer that will sit in front of a fleet of application servers in a private subnet. There is limited IP space left in the VPC CIDR. The application has few users now but is expected to grow quickly to millions of users. What design will use the LEAST amount of IP space, while allowing for this growth?
Options
- AUse two /29 subnets for an Application Load Balancer in different Availability Zones.
- BUse one /29 subnet for the Network Load Balancer. Add another VPC CIDR to the VPC to allow
- CUse two /28 subnets for a Network Load Balancer in different Availability Zones.
- DUse one /28 subnet for an Application Load Balancer. Add another VPC CIDR to the VPC to allow
How the community answered
(50 responses)- A10% (5)
- B4% (2)
- C68% (34)
- D18% (9)
Explanation
If you enable cross-zone load balancing, each load balancer node distributes traffic across the registered targets in all enabled Availability Zones. Effectively double the number of connections possible to your backend fleet. Scale the fleet (even in a single AZ) accordingly. It's a question of throughput, not availability.
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