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Advanced CDN delivery: multi-CDN strategy, tiered caching topology, cache partitioning, origin failover, token auth edge cases, HTTP/3 and QUIC implications, WAF/DDoS at edge, log sampling, and cost/latency tradeoffs for global streaming. Mix of single-answer and multiple-answer items; multi-select questions ask you to select every correct statement.
Operational CDN concepts: cache miss behavior, stale-while-revalidate, origin shield, cache key rules, range requests, live vs VOD edge patterns, purge propagation, and basic security at the edge. Mix of single-answer and multiple-answer items; multi-select questions ask you to select every correct statement.
Foundations of content delivery networks: edge caching, origin vs edge, cache hits, TTL, geographic distribution, and basic HTTP caching for static and streaming assets. Mix of single-answer and multiple-answer items; multi-select questions ask you to select every correct statement.
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