400-007 Question #191: Real Exam Question with Answer & Explanation

The correct answer is A: Evaluate bandwidth utilization and connection quality. Evaluating bandwidth utilization and connection quality is the essential pre-deployment step to confirm the network can support VoIP traffic requirements.

Question

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?

Options

AEvaluate bandwidth utilization and connection quality
BEnable special requirements such as direct DID lines on pickup
CMake recommendations to limit the size of the half-open session table on routers
DCheck if anomaly detection is enabled for SIP and H.323 on Layer 3 devices

Explanation

Evaluating bandwidth utilization and connection quality is the essential pre-deployment step to confirm the network can support VoIP traffic requirements.

Common mistakes.

B. Enabling DID (Direct Inward Dialing) lines is a telephony feature configuration task performed after the network is confirmed ready, not a pre-deployment network readiness assessment.
C. Limiting the half-open session table on routers is a security measure related to TCP SYN flood protection and is unrelated to ensuring the network can handle VoIP traffic.
D. Checking anomaly detection for SIP and H.323 on Layer 3 devices is a security configuration concern, not a network readiness assessment required before VoIP implementation.

Concept tested. VoIP pre-deployment network readiness assessment

Reference. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab12/collab12/network.html

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