Which model is the only QoS model with no mechanism to classify packets?
- hard QoS
- DiffServ
- best-effort
- IntServ
Explanation: The best-effort model has no way to classify packets; therefore, all network packets are treated the same way. Without QoS, the network cannot tell the difference between packets and, as a result, cannot treat packets preferentially.
Exam with this question: CCNA 3 v7 Module 9 Quiz - QoS Concepts
Exam with this question: CCNA 4 v6 Chapter 6: Check Your Understanding
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