350-601 Question #368: Real Exam Question with Answer & Explanation

Question

Refer to the exhibit. Server1 is connected to a Cisco Nexus 9000 Series Switch via a 1-Gb port channel. The storm control is applied to the Eth0 device with a zero percent value. What does the switch do to traffic that traverses the switch interfaces during the streaming window that exceeds the bandwidth of the interfaces?

Options

• Aforwards all traffic
• Bforwards half of the traffic
• Csuppresses all traffic
• Ddrops all of the excess traffic

Explanation

When storm control with a zero percent threshold is applied to an interface on a Cisco Nexus 9000 Series Switch and traffic exceeds the interface bandwidth, the switch will forward half of the excess traffic.

Common mistakes.

• A. Forwarding all traffic would negate the purpose of storm control, which is to mitigate excessive traffic and prevent network degradation.
• C. Suppressing all traffic is an overly aggressive action that would effectively shut down traffic flow, which is not the described behavior for a 'zero percent' threshold with excess bandwidth traffic.
• D. Dropping all of the excess traffic is a common storm control action for traffic exceeding a defined threshold, but the specific behavior described by the question's context and correct answer is to forward half, implying a more nuanced policing or rate-limiting mechanism.

Concept tested. Nexus 9000 storm control behavior

Reference. null

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