- A
A class-map can match multiple criteria using 'match-all' or 'match-any'.
match-all requires all criteria; match-any requires any.
- B
A policy-map can be applied globally to all interfaces.
Why wrong: Policy-maps are applied per interface or subinterface.
- C
A policy-map can contain a 'class class-default' for unclassified traffic.
class-default handles traffic not matching other classes.
- D
The 'service-policy' command is used in global configuration mode.
Why wrong: It is applied under interface configuration.
- E
WRED can only be configured within a policy-map class.
Why wrong: WRED can be configured under interface without MQC, but MQC is common.
Question 496 of 1,000
350-501 Automation and Quality of Services Practice Question
This 350-501 practice question tests your understanding of automation and quality of services. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
An SP is using MQC to configure QoS on a core router. Which TWO statements about MQC are correct? (Select 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
✓
A class-map can match multiple criteria using 'match-all' or 'match-any'.
MQC consists of class-map (classification), policy-map (define actions), and service-policy (apply). class-map uses match statements; policy-map can include bandwidth, priority, shape, etc.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A class-map can match multiple criteria using 'match-all' or 'match-any'.
Why this is correct
match-all requires all criteria; match-any requires any.
Related concept
Authentication checks who the user is.
- ✗
A policy-map can be applied globally to all interfaces.
Why it's wrong here
Policy-maps are applied per interface or subinterface.
- ✓
A policy-map can contain a 'class class-default' for unclassified traffic.
Why this is correct
class-default handles traffic not matching other classes.
Related concept
Authentication checks who the user is.
- ✗
The 'service-policy' command is used in global configuration mode.
Why it's wrong here
It is applied under interface configuration.
- ✗
WRED can only be configured within a policy-map class.
Why it's wrong here
WRED can be configured under interface without MQC, but MQC is common.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A practitioner preparing for the 350-501 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. Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access. 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.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 350-501 questions on access control and AAA configuration.
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Automation and Quality of Services — study guide chapter
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FAQ
Questions learners often ask
What does this 350-501 question test?
Automation and Quality of Services — This question tests Automation and Quality of Services — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: A class-map can match multiple criteria using 'match-all' or 'match-any'. — MQC consists of class-map (classification), policy-map (define actions), and service-policy (apply). class-map uses match statements; policy-map can include bandwidth, priority, shape, etc.
What should I do if I get this 350-501 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 350-501 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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Last reviewed: Jul 4, 2026
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.
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