350-501 Automation and Quality of Services Practice Question
An SP engineer is configuring a policy-map to implement hierarchical QoS. Which two statements are correct when using MQC for hierarchical QoS? (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
✓
The child policy-map must include the bandwidth and priority commands to define queuing behavior.
In hierarchical QoS using MQC, the child policy-map must include bandwidth/priority commands to define queuing behavior (B). The parent policy-map contains the shape command and references a child policy-map (C). The service-policy command is applied directly to the interface, referencing the parent policy (D). Therefore, options B, C, and D are correct. Note: The question stem asks for two, but all three are accurate statements.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Hierarchical QoS supports only two levels of nesting.
Why it's wrong here
Incorrect. Hierarchical QoS supports more than two levels of nesting (e.g., three levels).
- ✓
The child policy-map must include the bandwidth and priority commands to define queuing behavior.
Why this is correct
Correct. The child policy-map must include queueing commands like bandwidth and priority.
- ✓
The parent policy-map contains the shape command and references a child policy-map.
Why this is correct
Correct. The parent policy-map contains shaping and references a child policy-map.
- ✓
The service-policy command is applied directly to the interface, referencing the parent policy.
Why this is correct
Incorrect. While the service-policy command is used to apply a policy to an interface, it references the parent policy-map, not the child. Also, the command is also used within the parent to reference the child, making the statement too absolute.
- ✗
Both shape and priority commands must be configured in the same policy-map.
Why it's wrong here
They are separated into parent and child.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-501 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-501 exam.