AP CSP Day 33 Routing Fault Tolerance
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Big Idea 4
Day 33 Practice
Focus: Routing & Fault Tolerance
Practice Question
A network has redundant paths between devices. One path fails. What happens?
Why This Answer?
Redundancy means multiple paths exist. When one fails, routers automatically reroute packets through working paths. This is fault tolerance.
Why Not the Others?
A) Only true without redundancy.
C) Caching is unrelated to routing.
D) Speed doesn't increase - alternate paths may be slower.
Common Mistake
Watch Out!
Confusing fault tolerance with performance optimization. Redundancy ensures reliability, not speed.
AP Exam Tip
Redundancy = reliability through alternate paths. It's about continuing to work, not working faster.