Module 9
Slow, Not Broken
Every fault so far has been binary - a route exists or it does not, a port is open or filtered. This one is a link that is up, forwarding everything, and unusable.
2 activities~35 min
In this module
- Separate bandwidth, latency, jitter and loss as distinct measurements
- Read a ping summary and say which of them is wrong
- Explain why a few percent loss collapses a TCP transfer
- Route around a degraded path rather than a failed one
Activities
Lesson
When the network is slow, not down
Four measurements, and telling which one is the complaint.
10 min
Lab
Slow, not broken
A circuit that is up, passing every protocol, and adding 150ms and 8% loss to everything the branch does.
25 min
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Curriculum topics
Each topic page lists every lesson, quiz and hands-on lab that covers it, plus how it maps onto the CCNA and Network+ blueprints.