Question 303 of 1,840
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350-401 Practice Question: Which two statements about policing and shaping…
Which two statements about policing and shaping are true? (Choose two.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Policing can be configured on both ingress and egress interfaces, whereas shaping is typically applied only on egress interfaces.
Policing drops or re-marks packets that exceed a configured rate, while shaping buffers excess packets and delays them to smooth traffic. Policing can be applied inbound or outbound, but shaping is typically outbound only. Shaping uses a buffer, which can introduce jitter.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Policing can be configured on both ingress and egress interfaces, whereas shaping is typically applied only on egress interfaces.
Why this is correct
Correct. Policing is bidirectional; shaping is unidirectional (outbound) because it requires buffering.
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Shaping drops packets that exceed the configured rate, while policing buffers them to meet the rate.
Why it's wrong here
Incorrect. The roles are reversed: policing drops or re-marks; shaping buffers and delays.
- ✓
Both policing and shaping use a token bucket algorithm to measure traffic rates.
Why this is correct
Correct. Both mechanisms use token bucket or dual token bucket algorithms to determine conformance.
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Shaping is more suitable than policing for traffic that must be dropped immediately, such as scavenger-class traffic.
Why it's wrong here
Incorrect. Scavenger traffic is often policed (dropped) to protect other classes; shaping would delay it, which is not the goal.
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Policing always introduces additional latency due to queuing, while shaping does not.
Why it's wrong here
Incorrect. Policing does not queue packets; it drops or re-marks them. Shaping introduces latency due to buffering.
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Last reviewed: Jun 18, 2026
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