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DDoS (Distributed Denial of Service) differs from DoS in that
ADDoS uses a botnet of many hosts
BDDoS uses no internet at all
CDDoS is always faster than DoS
DDDoS targets only Windows machines
Answer & Solution
Correct answer: A. DDoS uses a botnet of many hosts
1. DoS (Denial of Service): a SINGLE attacker tries to exhaust a target's resources.
2. DDoS: a DISTRIBUTED attack — thousands or millions of compromised hosts (BOTNETS) flood the target simultaneously.
3. WHY EFFECTIVE: hard to block by source IP (legitimate traffic comes from millions of sources too); aggregate bandwidth can exceed any single defence.
4. LARGEST recorded DDoS: 3.47 Tbps (Azure, 2021).
5. DEFENSE:
• Upstream scrubbing services (Cloudflare, Akamai, AWS Shield).
• Rate limiting / geo-blocking when appropriate.
• Anycast network architecture absorbs traffic globally.
_Source: NIST CSF + CISA DDoS Mitigation Guide._
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