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Cisco 642-845 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: VoIP Technologies | 25% | - Bandwidth calculation and packetization - Delay, jitter, and loss requirements - VoIP architecture and components |
| Topic 2: Wireless Networking & Security | 25% | - WLAN QoS and optimization - WLAN fundamentals and management - Wireless security protocols (WEP, WPA, WPA2, EAP) |
| Topic 3: QoS Concepts and Models | 25% | - Classification and marking (CoS, ToS, DSCP, IP Precedence) - QoS models: Best-effort, IntServ, DiffServ - Congestion management and avoidance (FIFO, PQ, WRR, WFQ, CBWFQ, WRED) |
| Topic 4: QoS Mechanisms & Implementation | 25% | - Link efficiency mechanisms (cRTP, LFI, MLPPP) - Policing and shaping - AutoQoS configuration and verification |
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