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PROFESSIONAL-CLOUD-NETWORK-ENGINEER · Question #163
You are designing a new application that has backends internally exposed on port 800. The application will be exposed externally using both IPv4 and IPv6 via TCP on port 700. You want to ensure high…
The correct answer is A. Create a network load balancer that used backend services containing one instance group with. Target pool-based network load balancers support only IPv4 traffic, and only support the TCP and UDP protocols. https://cloud.google.com/load-balancing/docs/network/networklb-target-pools
Submitted by noor.lb· Apr 18, 2026Designing, planning, and prototyping a Google Cloud network
Question
You are designing a new application that has backends internally exposed on port 800. The application will be exposed externally using both IPv4 and IPv6 via TCP on port 700. You want to ensure high availability for this application. What should you do?
Options
- ACreate a network load balancer that used backend services containing one instance group with
- BCreate a network load balancer that uses a target pool backend with two instances.
- CCreate a TCP proxy that uses a zonal network endpoint group containing one instance.
- DCreate a TCP proxy that uses backend services containing an instance group with two instances.
How the community answered
(31 responses)- A81% (25)
- B3% (1)
- C3% (1)
- D13% (4)
Explanation
Target pool-based network load balancers support only IPv4 traffic, and only support the TCP and UDP protocols. https://cloud.google.com/load-balancing/docs/network/networklb-target-pools
Topics
#Load Balancing#External TCP/UDP Network Load Balancer#High Availability#Backend Services
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