PROFESSIONAL-CLOUD-SECURITY-ENGINEER · Question #146
Which type of load balancer should you use to maintain client IP by default while using the standard network tier?
The correct answer is D. TCP/UDP Network. TCP/UDP Network Load Balancer is a pass-through (non-proxying) load balancer that operates at Layer 4. Because it does not terminate the TCP connection, the original client IP is preserved end-to-end by default without any additional configuration. SSL Proxy (option A) and TCP…
Question
Options
- ASSL Proxy
- BTCP Proxy
- CInternal TCP/UDP
- DTCP/UDP Network
How the community answered
(35 responses)- A6% (2)
- B3% (1)
- C3% (1)
- D89% (31)
Explanation
TCP/UDP Network Load Balancer is a pass-through (non-proxying) load balancer that operates at Layer 4. Because it does not terminate the TCP connection, the original client IP is preserved end-to-end by default without any additional configuration. SSL Proxy (option A) and TCP Proxy (option B) are proxy-based load balancers that terminate the connection; the backend sees Google's IP unless X-Forwarded-For headers are explicitly used. Internal TCP/UDP (option C) is designed for internal VPC traffic and does not apply to public-facing use cases. The Standard Network Tier is supported by the external Network TCP/UDP Load Balancer, making option D the correct choice for preserving client IP in this tier.
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