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最新的 CCDE v3.0 400-007 免費考試真題 (Q204-Q209):

問題 #204
Which action must be taken before new VoIP systems are implemented on a network to ensure that the network is ready to handle the traffic?

A. Check if anomaly detection is enabled for SIP and H.323 on Layer 3 devices
B. Make recommendations to limit the size of the half-open session table on routers
C. Evaluate bandwidth utilization and connection quality
D. Enable special requirements such as direct DID lines on pickup

答案：C

解題說明：
* A (Evaluate bandwidth utilization and connection quality):Before VoIP deployment, a readiness assessment must include bandwidth analysis, latency, jitter, and packet loss to ensure call quality.
Other options explained:
* B: DID lines relate to telephony features but not network readiness.
* C: Session table limits are unrelated to VoIP readiness.
* D: Anomaly detection is security-related, not core network readiness.

問題 #205
Refer to the diagram.

Which solution must be used to send traffic from the foreign wireless LAN controller to the anchor wireless LAN controller?

A. Encapsulate packets into an EoIP tunnel and send them to the anchor controller.
B. Send packets without encapsulation to the anchor controller over the routed network.
C. Send packets from the foreign controller to the anchor controller via IPinIP or IPsec tunnel.
D. Send packets from the foreign controller to the anchor controller via Layer 3 MPLS VPN or VRF-Lite

答案：D

解題說明：
* In Cisco Wireless Guest Anchor deployments, traffic between foreign and anchor controllers is typically tunneled using CAPWAP (Control and Provisioning of Wireless Access Points).
* The CAPWAP tunnel operates over IP and can traverse MPLS VPN or VRF-Lite Layer 3 segmentation to maintain logical separation across different segments or geographic sites.
* This allows end-to-end isolation of guest traffic from the enterprise network into the DMZ anchor location, as shown in the diagram.
Why other options are incorrect:
* B: Unencapsulated traffic would expose guest traffic inside the enterprise network.
* C: EoIP is not a standard Cisco wireless tunneling method.
* D: IPinIP or IPsec tunnels are not typically used between WLCs for guest anchor tunneling.

問題 #206
Refer to the exhibit.

After a network audit a network engineer must optimize the current network convergence time The proposed solution must consider link layer and control plane failures. Which solution meets the requirements?

A. Implement BFD
B. Enable LSP fast flood
C. Increase fast hello timers
D. Configure debounce timers

答案：A

問題 #207
Refer to the diagram.

Which solution must be used to send traffic from the foreign wireless LAN controller to the anchor wireless LAN controller?

A. Send packets without encapsulation to the anchor controller over the routed network.
B. Send packets from the foreign controller to the anchor controller via Layer 3 MPLS VPN or VRF-Lite
C. Send packets from the foreign controller to the anchor controller via IPinIP or IPsec tunnel.
D. Encapsulate packets into an EoIP tunnel and send them to the anchor controller.

答案：D

問題 #208
A network architect is designing a policy where database applications access the internet directly, while other traffic routes through the data center, with dynamic path switching based on performance. Which solution meets these requirements?

A. MPLS L3VPN with QoS
B. Cloud OnRamp for SaaS
C. MPLS Direct Connect
D. Cloud OnRamp for IaaS

答案：D

解題說明：
* B (Cloud OnRamp for IaaS):This allows certain applications to have direct optimized access to public cloud resources while other enterprise traffic remains centralized. OnRamp for IaaS provides dynamic path selection and policy control based on application behavior and performance.
Other options explained:
* A: MPLS L3VPN does not offer cloud-optimized direct access.
* C: SaaS OnRamp is for SaaS applications, not IaaS workloads.
* D: Direct Connect links to the cloud but lacks policy-driven traffic engineering.

問題 #209
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