What topics does the CDN practice test PDF cover?

The PDF covers CDN architecture (origin servers, edge nodes, PoPs), cache-control headers and invalidation strategies, CDN use cases (static assets, video streaming, DDoS mitigation), SSL/TLS edge termination, HTTP/2 and HTTP/3 performance, WAF integration, origin pull vs. push, and key CDN metrics like cache hit ratio and TTFB.

Which certifications test CDN knowledge?

CDN concepts appear in AWS Certified Solutions Architect (CloudFront), Microsoft Azure Administrator (Azure CDN), Google Cloud Professional Cloud Architect, and vendor-specific Cloudflare certifications. Understanding CDN architecture is also tested in CompTIA Cloud+ and general cloud practitioner exams.

What is the difference between cache hit ratio and TTFB?

Cache hit ratio measures the percentage of requests served directly from the CDN edge cache without going back to the origin server — a higher ratio means lower origin load and faster response. TTFB (Time to First Byte) measures the time from the client sending a request to receiving the first byte of the response, and CDNs improve it by serving from nearby edge nodes rather than distant origin servers.

What is origin pull vs. origin push in CDN?

In origin pull (the most common model), the CDN fetches content from the origin server on the first request and caches it at the edge for subsequent requests. In origin push, you proactively upload content to CDN edge nodes before any request is made. Origin push is best for content you know will be in high demand immediately, such as a software release or a scheduled live event.

CDN Content Delivery Network Certification Practice Test PDF (Free Printable 2026)

✅ Pass the CDN Content Delivery Network exam with confidence. Practice questions with detailed explanations and instant feedback on every answer.

CDN - Content Delivery Network CertificationOct 4, 20265 min read

Free CDN Practice Test PDF Download

Content Delivery Networks are a core topic in cloud certification exams including AWS Solutions Architect, Azure Administrator, and Google Cloud Professional. This free CDN practice test PDF gives you printable multiple-choice questions covering CDN architecture, caching strategies, edge computing, and performance optimization — so you can study wherever you are, even without internet access. Practice with the free Content Delivery Network Certification practice test on PracticeTestGeeks (9 questions with answer explanations).

The PDF covers everything from how origin servers hand off content to edge nodes, to cache-control headers, TTL expiration, and real-world CDN use cases like video streaming, static asset delivery, and DDoS mitigation. Download it once and review it on any device or print it out for desk study.

Free Content Delivery Network Certification Study Tools

Interactive Content Delivery Network Certification resources on PracticeTestGeeks, free to start:

CDN Architecture & Components — 9 questions with answer explanations
Content Delivery Network Certification flashcards — review key terms and concepts card by card
Content Delivery Network Certification study guide — topic-by-topic overview of what the exam covers
Content Delivery Network Certification cheat sheet — one-page printable summary for last-minute review

Pro Tip: Focus your CDN study time on areas where you score lowest. Most exam questions test application of knowledge, not memorization.

CDN Content Delivery Network Certification Practice Test PDF (Free Printable 2026)

📄Free CDN Practice Test PDF

What the CDN Practice Test PDF Covers

CDN Architecture and Edge Infrastructure

Questions test your knowledge of origin servers, edge nodes, and Points of Presence (PoPs). You need to understand cache hierarchies — how content flows from origin to regional edge caches to end users — and how CDNs reduce latency by serving assets from the closest geographic location.

Caching Policies and Invalidation

The exam tests cache-control header values (max-age, s-maxage, no-cache, no-store), TTL-based expiration, manual purge APIs, and versioned URL strategies. You need to know when to use each invalidation approach and the trade-offs involved in aggressive vs. conservative caching.

CDN Use Cases and Performance

Scenarios cover static asset delivery, video streaming (adaptive bitrate), API acceleration, and DDoS mitigation. HTTP/2 multiplexing and HTTP/3 QUIC improvements are tested, along with origin pull vs. origin push models and when each applies.

Security and Configuration

Questions cover SSL/TLS termination at the edge, Web Application Firewall (WAF) integration, custom domain configuration with CNAME records, CDN failover and origin health checks, and how cache hit ratio affects both performance and cost.

✓Understand CDN architecture: origin servers, edge nodes, and PoPs
✓Know cache-control headers: max-age, s-maxage, no-cache, no-store
✓Study cache invalidation: TTL expiration, purge APIs, versioned URLs
✓Learn CDN use cases: static assets, video streaming, API acceleration, DDoS mitigation
✓Review SSL/TLS termination at the edge and security implications
✓Compare HTTP/2 multiplexing vs. HTTP/3 QUIC performance improvements
✓Understand origin pull vs. origin push and when to use each
✓Study WAF integration with CDN and edge security policies
✓Know how to configure custom domains and CNAME records with CDN providers
✓Review CDN metrics: cache hit ratio, TTFB, throughput, and origin offload percentage

Free CDN Practice Tests Online

Want interactive CDN questions with instant scoring? Our CDN practice test lets you quiz yourself online, track your score, and review answer explanations immediately. Use the online tests alongside the PDF for the most complete CDN exam preparation — the PDF is ideal for commutes and offline study, while the online tests give you timed exam simulation.

Sample Content Delivery Network Certification Practice Questions

Try these questions from our free Content Delivery Network Certification practice tests. The correct answer and an explanation follow each question.

An API gateway sitting in front of a CDN origin needs to enforce per-client quotas. Which HTTP header should the gateway return to tell clients when their quota resets?
- A. X-Rate-Limit-Retry-After
- B. Retry-After
- C. X-RateLimit-Reset
- D. X-Quota-Expiry

Answer: C. X-RateLimit-Reset

X-RateLimit-Reset is the de facto standard header conveying the Unix timestamp when the rate limit window resets.

What is 'stale-while-revalidate' behavior in a CDN cache?

A. The CDN refuses to serve content until the origin confirms freshness
B. The CDN serves a stale cached object immediately while asynchronously fetching a fresh copy
C. The CDN deletes expired objects before they can be served
D. The CDN downgrades HTTPS to HTTP during revalidation

Answer: B. The CDN serves a stale cached object immediately while asynchronously fetching a fresh copy

Stale-while-revalidate lets the CDN serve the old cached version instantly, then refresh it in the background, eliminating user-perceived latency.

A CDN-delivered video stream has high rebuffering rates in Europe but not in the US. What monitoring data would most directly explain this?

A. Origin server CPU usage
B. CDN edge POP bandwidth utilization and latency metrics per region
C. Client device screen resolution statistics
D. Total CDN monthly egress volume

Answer: B. CDN edge POP bandwidth utilization and latency metrics per region

Regional edge POP bandwidth saturation or high latency specific to European nodes would directly explain geographically isolated rebuffering issues.

A CDN operator wants to ensure that DNS queries from European users are answered by European PoPs. Which feature should be configured on the authoritative DNS?

A. GeoDNS (geography-based DNS routing)
B. DNSSEC signing
C. Negative TTL reduction
D. AXFR replication to European secondaries

Answer: A. GeoDNS (geography-based DNS routing)

GeoDNS inspects the requester's IP geolocation and returns records pointing to the nearest regional PoP.

Take the full Content Delivery Network Certification practice test

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