Cloud Digital Leader Google Cloud Products and Services Practice Question
A media company needs to stream live video to global viewers with low latency. They also want to protect against DDoS attacks. Which combination of Google Cloud networking 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 content at edge locations for low-latency delivery, and Cloud Armor provides DDoS protection and WAF capabilities at the edge.
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 Interconnect and Cloud VPN
Why it's wrong here
Cloud Interconnect and Cloud VPN are for connecting on-premises networks to GCP via dedicated or encrypted tunnels, not for distributing content to end users worldwide. They provide reliable connectivity between data centers but lack edge caching and DDoS protection capabilities. For live video streaming, viewers need content pushed close to them, which these hybrid networking services simply do not do.
- ✓
Cloud CDN and Cloud Armor
Why this is correct
Cloud CDN accelerates live video by caching video segments at Google's hundreds of edge PoPs, minimizing latency for global viewers even during stream spikes. Cloud Armor complements this by enforcing DDoS protection and security policies at the edge, blocking malicious traffic before it reaches the origin. This pairing delivers both performance and security, making it the correct solution for global live streaming.
- ✗
Cloud DNS and Cloud Armor
Why it's wrong here
Cloud DNS is a global domain name service that resolves hostnames to IP addresses; it does not cache or deliver video content, so it cannot enhance video streaming performance. While Cloud Armor does offer DDoS protection, without Cloud CDN there is no edge delivery mechanism to bring live video closer to viewers. Consequently, this combination addresses security but fails to solve global content distribution latency.
- ✗
Cloud Load Balancing and Cloud NAT
Why it's wrong here
Cloud Load Balancing balances traffic across backend instances and ensures high availability, but it does not cache content at the edge, so all viewers still fetch from the origin, causing high latency for distant users. Cloud NAT is designed to enable outbound connections from private instances to the internet and provides no DDoS protection or WAF features. This pairing lacks both edge caching and security, so it is unsuitable for global live streaming.
Go deeper
Related to this question
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Cloud Digital Transformation
Key term
Cloud CDN
A Cloud CDN is a network of servers spread around the world that stores copies of your website or app content so it loads faster for users no matter where they are.
Key term
DDoS
A DDoS (Distributed Denial-of-Service) attack is a malicious attempt to disrupt normal traffic of a targeted server, service, or network by overwhelming it with a flood of internet traffic from multiple compromised systems.
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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.