Optimizing Converged Cisco Networks，考試編號是642-845，是CCNP的考試之一，內容包括：描述基本的 VoIP 網絡的實施學習關於擁塞網絡的優化思想；學習實施集成的 QoS 服務特性；學習實施 QoS 的自動配置；學習優化 WLAN 的管理和安全。目前考取最新CCNP有兩種方案：方案1:640-901 + 642-812 + 642-825 + 642-845；方案2:642-892 + 642-825 + 642-845。CCNP 持有者有安裝和配置 100 到 500 個或者更多節點的網絡和排查故障的能力；能夠管理核心網絡的運作，以及綜合應用網絡邊緣的集成語音，無線以及安全方面的內容。
部份考試內容如下：
1. Which two QoS statements are true about the use of the SDM QoS wizard? (Choose two.)
A. Business-critical traffic includes VoIP and voice signaling packets.
B. SDM can be used to configure a basic QoS policy for incoming traffic on WAN interfaces and IPsec
tunnels.
C. SDM can provide QoS for real-time traffic and business-critical traffic.
D. SDM creates a custom-queuing (CQ) or a priority-queuing (PQ) policy.
E. SDM creates a low latency queuing (LLQ) service policy with its associated classes.
F. When allocating bandwidth, values can be entered in either bandwidth percentage or kilobytes per
second (kBps).
Answer: CE
2. Which two Cisco AutoQoS interface statements are true? (Choose two.)
A. AutoQoS is supported on Frame Relay multipoint subinterfaces.
B. AutoQoS is supported on low-speed ATM PVCs in point-to-point subinterfaces.
C. AutoQoS is supported on serial PPP and HDLC interfaces.
D. AutoQoS is supported only on Frame Relay main interfaces and not on any subinterface configuration.
Answer: BC
3. Which two wireless security statements are true? (Choose two.)
A. A TACACS+ server is required to implement 802.1x.
B. MIC protects against man-in-the-middle and replay attacks.
C. The 802.1x standard provides encryption services for wireless clients.
D. The AES (symmetric block cipher) is specified in the IEEE 802.11i specification.
E. The IEEE 802.11i specification uses RC4 as its encryption mechanism.
F. WPA requires TKIP and AES as encryption methods.
Answer: BD
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