- A
Cloud VPN with split tunneling for internal application access.
Why wrong: VPN grants network-level access — once connected, users can reach all resources on that network. IAP provides per-application access control based on identity, which is more granular and aligns with zero trust.
- B
Cloud Identity-Aware Proxy (IAP)
IAP implements BeyondCorp zero-trust: users authenticate with their Google identity, device context is checked, and only authorized users access specific applications — no VPN or network-level access required.
- C
Cloud Armor IP allowlist to restrict access to corporate office IP ranges.
Why wrong: IP allowlists restrict by network location — the opposite of zero trust. Remote employees' home IPs can't be statically allowlisted. IAP uses identity, not IP, for access decisions.
- D
Cloud Load Balancing with SSL termination.
Why wrong: SSL termination encrypts traffic but doesn't authenticate users or make authorization decisions. It's infrastructure, not an access control mechanism.
Zero Trust Access Without VPN: Cloud Identity-Aware Proxy (IAP)
This GCDL practice question tests your understanding of google cloud products, services, and solutions. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
An enterprise wants employees to access internal web applications securely from any location (including remote work from home) without using a VPN. Employees should only access apps they're authorized for, based on their identity and device context. Which Google Cloud service enables this zero-trust access model?
Quick Answer
The answer is Cloud Identity-Aware Proxy (IAP). This service enables zero trust access without VPN by verifying a user’s identity and device context before allowing any connection to internal web applications, following Google’s BeyondCorp model. Instead of relying on a network perimeter, IAP authenticates and authorizes each request individually, so employees can securely access only the apps they’re approved for from any location, including remote work from home. On the Google Cloud Digital Leader exam, this question tests your understanding of how IAP replaces traditional VPNs for secure remote access, often appearing in scenarios about modernizing security for a distributed workforce. A common trap is confusing IAP with Cloud VPN or Cloud Armor, but remember: IAP is identity-based, not network-based. Memory tip: IAP = “I Am Protected” by identity and context, not by VPN.
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
Cloud Identity-Aware Proxy (IAP)
Cloud Identity-Aware Proxy (IAP) is the correct service because it enforces zero-trust access by verifying a user's identity and device context before granting access to internal web applications, without requiring a VPN. It uses Google's BeyondCorp model to authenticate and authorize each request based on identity and context, allowing secure access from any location.
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.
- ✗
Cloud VPN with split tunneling for internal application access.
Why it's wrong here
VPN grants network-level access — once connected, users can reach all resources on that network. IAP provides per-application access control based on identity, which is more granular and aligns with zero trust.
- ✓
Cloud Identity-Aware Proxy (IAP)
Why this is correct
IAP implements BeyondCorp zero-trust: users authenticate with their Google identity, device context is checked, and only authorized users access specific applications — no VPN or network-level access required.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Cloud Armor IP allowlist to restrict access to corporate office IP ranges.
Why it's wrong here
IP allowlists restrict by network location — the opposite of zero trust. Remote employees' home IPs can't be statically allowlisted. IAP uses identity, not IP, for access decisions.
- ✗
Cloud Load Balancing with SSL termination.
Why it's wrong here
SSL termination encrypts traffic but doesn't authenticate users or make authorization decisions. It's infrastructure, not an access control mechanism.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse network-level security (like VPNs or IP allowlists) with identity-aware access control, assuming that any encrypted tunnel or IP restriction satisfies zero-trust requirements, but zero-trust fundamentally requires per-request identity and context verification, not just network perimeter controls.
Detailed technical explanation
How to think about this question
IAP leverages Google's BeyondCorp architecture, using OAuth 2.0 and OpenID Connect for authentication, and evaluates device context via Access Context Manager (e.g., device OS version, disk encryption status). Under the hood, IAP intercepts requests at the Google Front End (GFE) and enforces access policies before traffic reaches the backend, ensuring that only authorized sessions pass through. In a real-world scenario, an employee's compromised device would be denied access even if the user's credentials are valid, because IAP checks device compliance against predefined security policies.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this GCDL question test?
Google Cloud products, services, and solutions — This question tests Google Cloud products, services, and solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Cloud Identity-Aware Proxy (IAP) — Cloud Identity-Aware Proxy (IAP) is the correct service because it enforces zero-trust access by verifying a user's identity and device context before granting access to internal web applications, without requiring a VPN. It uses Google's BeyondCorp model to authenticate and authorize each request based on identity and context, allowing secure access from any location.
What should I do if I get this GCDL 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: Jun 11, 2026
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