This 350-401 practice question tests your understanding of infrastructure security. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A network engineer runs the following command on Router R1:
R1# show policy-map interface GigabitEthernet0/0
GigabitEthernet0/0
Service-policy input: QOS_POLICY
Class-map: VOICE (match-any)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: ip dscp ef (46)
Queueing
queue limit 64 packets
(queue depth/total drops/no-buffer drops) 0/0/0
(pkts output/bytes output) 0/0
police cir 1000000 bc 31250 be 31250
conformed 0 bytes; actions: transmit
exceeded 0 bytes; actions: drop
violated 0 bytes; actions: drop
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Voice traffic is being policed at 1 Mbps and any excess is dropped.
The policy-map QOS_POLICY is applied inbound on GigabitEthernet0/0. It has two classes: VOICE (matching DSCP EF) and class-default. The VOICE class has a police command with a CIR of 1 Mbps, and actions for conform (transmit) and exceed/violate (drop). The class-default has no police. The output shows no packets matched VOICE, so no policing has occurred for that class. The class-default has 100 packets.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The policy is applied in the output direction.
Why it's wrong here
The output says 'Service-policy input', so it is applied inbound.
✓
Voice traffic is being policed at 1 Mbps and any excess is dropped.
Why this is correct
The VOICE class has a police statement with CIR 1 Mbps, and actions for exceed and violate are drop.
Related concept
Read the scenario before looking for a memorised answer.
✗
All traffic is being policed at 8 kbps.
Why it's wrong here
Only the VOICE class has policing; class-default does not have a police command.
✗
The policy is shaping traffic to 1 Mbps.
Why it's wrong here
The policy uses policing (police command), not shaping.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
The output says 'Service-policy input', so it is applied inbound.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 350-401 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which 350-401 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Infrastructure Security — This question tests Infrastructure Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Voice traffic is being policed at 1 Mbps and any excess is dropped. — The policy-map QOS_POLICY is applied inbound on GigabitEthernet0/0. It has two classes: VOICE (matching DSCP EF) and class-default. The VOICE class has a police command with a CIR of 1 Mbps, and actions for conform (transmit) and exceed/violate (drop). The class-default has no police. The output shows no packets matched VOICE, so no policing has occurred for that class. The class-default has 100 packets.
What should I do if I get this 350-401 question wrong?
Identify which 350-401 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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