Cloud Digital Leader Why Cloud Technology Can Transform Business Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  VPC firewalls

  Why it's wrong here

  VPC firewalls control traffic at the network layer by applying static rules based on IP addresses, ports, and protocols at the subnet or instance level. They cannot implement zero trust because they rely on network location rather than verified identity and device posture, and they do not continuously evaluate user context or enforce per-request authorization decisions.

• ✓

  BeyondCorp Enterprise

  Why this is correct

  BeyondCorp Enterprise is a zero-trust access solution that replaces the traditional VPN perimeter with an access proxy that evaluates identity, device health, and context for every request. It continuously checks trust signals against policy and grants access only when conditions are met, embodying the core zero-trust principle of 'never trust, always verify' for applications and resources.

• ✗

  Cloud Armor

  Why it's wrong here

  Cloud Armor is a web application firewall (WAF) and DDoS protection service that inspects incoming traffic for malicious patterns, signatures, or IP-based threats at the edge. It does not authenticate users, evaluate device posture, or make identity-aware access decisions, so while it strengthens network defenses, it does not provide the user-level trust verification required for a zero-trust model.

• ✗

  Cloud Key Management Service (KMS)

  Why it's wrong here

  Cloud KMS is a key management service that creates, stores, manages, and rotates encryption keys used to protect data at rest and in transit. It is a critical security control for data confidentiality, but it does not establish trust for user access or resource authorization, and it never verifies an individual's identity or device posture, making it unrelated to the identity-driven decisions at the heart of zero trust.

• ✓

  Identity and Access Management (IAM)

  Why this is correct

  IAM is indeed a correct foundational element of zero trust because it delivers fine-grained, identity-based access control on Google Cloud through roles, permissions, and conditions, enforcing least privilege. However, IAM alone does not provide continuous evaluation of device context or protect applications outside Google Cloud, which is why a comprehensive solution like BeyondCorp Enterprise is needed to operationalize zero trust end-to-end.

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