Cloud Digital Leader Google Cloud Products and Services Practice Question
A company runs a globally distributed application with users in North America, Europe, and Asia. They need to serve static content (images, videos) with low latency from edge locations. They also need to protect against DDoS attacks. Which combination of services should they use?
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 CDN and Cloud Armor
Cloud CDN caches static content at edge locations for low latency, and Cloud Armor provides DDoS protection and WAF capabilities.
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 CDN and Cloud NAT
Why it's wrong here
Cloud NAT provides outbound internet connectivity for private instances, allowing them to initiate connections without public IPs. Cloud CDN caches static content at Google's edge, but neither service inspects or filters inbound traffic for DDoS attacks. This combination can improve egress management and caching latency, but it lacks the security policy enforcement and WAF capabilities needed to block malicious traffic before it reaches the origin.
- ✗
Cloud Load Balancing and Cloud CDN
Why it's wrong here
Cloud Load Balancing distributes inbound requests across backend instances to improve scalability and availability, while Cloud CDN serves cached static content from edge locations. Neither service includes DDoS detection or filtering; they are performance and traffic management components, not security controls. To resist DDoS attacks, the architecture needs Cloud Armor's preconfigured rules and rate limiting, which this combination omits.
- ✓
Cloud CDN and Cloud Armor
Why this is correct
Cloud CDN offloads static content delivery to Google's global edge cache, absorbing sudden spikes in traffic and reducing origin load. Cloud Armor enforces security policies at the edge, offering HTTP(S) L3-7 DDoS protection, WAF rules, and per-user rate limits. Together, they provide both acceleration and protection: Cloud CDN handles legitimate cacheable content at scale, while Cloud Armor filters out attack traffic before it reaches Cloud CDN or the backend.
- ✗
Cloud Armor and Cloud Interconnect
Why it's wrong here
Cloud Armor delivers DDoS protection and WAF functionality at the edge, but Cloud Interconnect is a dedicated networking service that connects an on-premises network to Google Cloud via high-speed private links. Interconnect does not inspect traffic or provide DDoS mitigation; it simply provides reliable, low-latency connectivity. Choosing this pair adds unnecessary WAN expense and fails to address the need for edge caching, which Cloud CDN would provide alongside Cloud Armor.
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Related to this question
Learn chapter
Cloud Digital Transformation
Key term
WAF
A Web Application Firewall (WAF) is a security tool that filters, monitors, and blocks HTTP traffic to and from a web application to protect it from common attacks.
Key term
Denial-of-service
A Denial-of-service (DoS) attack is an attempt to make a computer, network, or online service unavailable to its intended users by overwhelming it with fake traffic or requests.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This GCDL 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 GCDL exam.