Big Idea 4 · Topic 4.1 · Exercise 2
Network Diagnosis Clinic
25 minutes - 5 diagnoses - LO CSN-1.A, CSN-1.B, CSN-1.C, CSN-1.D
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The same cases as your handout, in the same order.
Scenario 1 · Foundational
The school Wi-Fi goes down during first period. A freshman announces: 'The Internet is broken - like, the WHOLE Internet, for everyone. It's probably down worldwide right now.'
Concept named (which CED idea is in play):
Corrected diagnosis + mechanism (what's really happening and why):
Deeper layer (enrichment):
Scenario 2 · Core
A family upgrades to a '200 Mbps' internet plan. Dad complains: 'We were promised 200 megabits every second. My 50-megabyte download took six seconds instead of a quarter of one. We should sue.'
Concept named (which CED idea is in play):
Corrected diagnosis + mechanism (what's really happening and why):
Deeper layer (enrichment):
Scenario 3 · Core
Mid-match, a gamer's stats overlay shows packets arriving out of order. She posts: 'Proof my ISP's network is defective - packets are supposed to arrive in the order they were sent.'
Concept named (which CED idea is in play):
Corrected diagnosis + mechanism (what's really happening and why):
Deeper layer (enrichment):
Scenario 4 · Challenge
A startup pitches the school district: 'Ditch the open Internet. Our proprietary NetPro protocol is licensed only to our certified devices - a private network whose rules we control end-to-end. It will be the next Internet, but better.'
Concept named (which CED idea is in play):
Corrected diagnosis + mechanism (what's really happening and why):
Deeper layer (enrichment):
Scenario 5 · Challenge
A senior's tech-club presentation declares: 'The Web and the Internet are the same thing. Everything online - your games, your smart speaker, your email - runs on the World Wide Web. That's why it's called being ON the web.'
Concept named (which CED idea is in play):
Corrected diagnosis + mechanism (what's really happening and why):
Deeper layer (enrichment):
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