300-320 · Question #539
300-320 Question #539: Real Exam Question with Answer & Explanation
The correct answer is C: shaping. Traffic shaping is the correct tool for avoiding overrunning a committed bandwidth limit like 50 Mbps. Shaping buffers excess traffic in a queue and releases it at the configured rate using a token bucket mechanism, smoothing bursts and keeping output at or below the target rate.
Question
Options
- ACIR
- Bpolice
- Cshaping
- DACL
- Erate-limit
Explanation
Traffic shaping is the correct tool for avoiding overrunning a committed bandwidth limit like 50 Mbps. Shaping buffers excess traffic in a queue and releases it at the configured rate using a token bucket mechanism, smoothing bursts and keeping output at or below the target rate. This is ideal for service provider handoffs where exceeding the contracted rate causes the ISP to drop or penalize traffic. Policing would drop excess traffic rather than smooth it, which wastes bandwidth and harms TCP performance. ACLs filter traffic by policy but do not rate-limit. CIR is a rate parameter concept, not a mechanism. Rate-limit is a legacy Cisco IOS feature that performs policing (drop), not shaping.
Community Discussion
No community discussion yet for this question.