- A
All load balancers support IPv6 client traffic.
Why wrong: Some load balancers do not support IPv6.
- B
SSL proxy load balancer supports non-HTTP traffic.
Why wrong: SSL proxy only supports TCP with SSL termination.
- C
Global external HTTP(S) load balancer can distribute traffic across multiple regions.
This is a key feature of global load balancers.
- D
Internal TCP/UDP load balancer can be used for traffic within a VPC.
Internal load balancers are designed for VPC-internal traffic.
- E
Network load balancer can only balance TCP traffic.
Why wrong: Network load balancers support both TCP and UDP.
Question 427 of 999
Cloud Load Balancing Types — Which Load Balancer to Use | Google Professional Cloud Developer Explained
This PCD practice question tests your understanding of integrating google cloud services. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which two statements are true about Cloud Load Balancing? (Choose two.)
Quick Answer
The correct answer is that an internal TCP/UDP load balancer can be used for traffic within a VPC, and a global external HTTP(S) load balancer can distribute traffic across multiple regions. This is because Google Cloud’s load balancing types are designed for specific traffic patterns: global external load balancers operate at the edge of Google’s network to route user requests to the closest healthy backend across regions, while internal load balancers are regional and handle private traffic between instances inside a Virtual Private Cloud without exposing a public IP. On the Google Professional Cloud Developer exam, this question tests your ability to distinguish between the four main load balancer categories—global external, regional external, regional internal, and proxy-based—and their supported protocols. A common trap is confusing SSL proxy load balancers (which only handle TCP with SSL termination) with network load balancers (which support both TCP and UDP). Remember the mnemonic: “Global HTTP(S) goes worldwide; Internal TCP/UDP stays inside.”
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
✓
Global external HTTP(S) load balancer can distribute traffic across multiple regions.
Option C is correct because the global external HTTP(S) load balancer is a proxy-based, Layer 7 load balancer that uses a single anycast IP address and can distribute traffic across backend instances in multiple regions, enabling global load balancing with automatic failover. Option D is correct because the internal TCP/UDP load balancer is a regional, pass-through load balancer that operates at Layer 4 and is designed to distribute traffic among instances within the same VPC and region, using RFC 1918 private IP addresses.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
All load balancers support IPv6 client traffic.
Why it's wrong here
Some load balancers do not support IPv6.
- ✗
SSL proxy load balancer supports non-HTTP traffic.
- ✓
Global external HTTP(S) load balancer can distribute traffic across multiple regions.
Why this is correct
This is a key feature of global load balancers.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Internal TCP/UDP load balancer can be used for traffic within a VPC.
Why this is correct
Internal load balancers are designed for VPC-internal traffic.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Network load balancer can only balance TCP traffic.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume all load balancers support IPv6 or that SSL proxy can handle any TCP traffic, but Google Cloud specifically restricts SSL proxy to TCP with SSL termination and the Network load balancer to both TCP and UDP, not just TCP.
Detailed technical explanation
How to think about this question
The global external HTTP(S) load balancer uses Google's global anycast IP and leverages the Google Front End (GFE) to terminate client connections at the edge of Google's network, then proxies requests to the closest healthy backend via internal HTTP/2 connections. The internal TCP/UDP load balancer uses a shared VIP (Virtual IP) within the VPC and relies on the Andromeda software-defined networking stack to perform direct server return (DSR), ensuring that return traffic bypasses the load balancer for lower latency. A real-world scenario where this matters is a multi-region web application that needs to serve users from the nearest region while using internal load balancers for microservices communication within a single region.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this PCD question test?
Integrating Google Cloud services — This question tests Integrating Google Cloud services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Global external HTTP(S) load balancer can distribute traffic across multiple regions. — Option C is correct because the global external HTTP(S) load balancer is a proxy-based, Layer 7 load balancer that uses a single anycast IP address and can distribute traffic across backend instances in multiple regions, enabling global load balancing with automatic failover. Option D is correct because the internal TCP/UDP load balancer is a regional, pass-through load balancer that operates at Layer 4 and is designed to distribute traffic among instances within the same VPC and region, using RFC 1918 private IP addresses.
What should I do if I get this PCD question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This PCD practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCD exam.
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