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Exam 350-501 topic 1 question 176 discussion

Actual exam question from Cisco's 350-501
Question #: 176
Topic #: 1
[All 350-501 Questions]

A network engineer is implementing a QoS policy for outbound management traffic classification and marking on a CPE device with these requirements:
✑ Management protocols must be marked with DSCP AF class 2 with low drop probability.
✑ Monitoring protocols must be marked with DSCP AF class 1 with low drop probability.
✑ All remaining traffic must be marked with a DSCP value of 0.
Which configuration must the engineer implement to satisfy the requirements?

  • A. policy-map cpe-mgmt-policy class management set ip dscp af21 class monitoring set ip dscp af11 class class-default set ip dscp default end
  • B. policy-map cpe-mgmt-policy class management set ip dscp af21 class monitoring set ip dscp af11 class class-default set ip dscp af0 end
  • C. policy-map cpe-mgmt-policy class management set ip dscp af23 class monitoring set ip dscp af13 class class-default set ip dscp default end
  • D. policy-map cpe-mgmt-policy class management set ip dscp af23 class monitoring set ip dscp af13 class class-default set ip dscp af0 end
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Suggested Answer: A 🗳️
by elroy909 at Oct. 31, 2021, 9:35 a.m.

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EdgardoAC
Highly Voted 1 year, 10 months ago
Selected Answer: A
A is correct. af10 as far as I can tell does not exist. Options B and D are eliminated. af23 has high drop probability. Option C is eliminated https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/4_0/qos/configuration/guide/nexus1000v_qos/qos_6dscp_val.pdf
upvoted 7 times
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pluissenbol
Most Recent 6 months, 1 week ago
Selected Answer: A
A is correct. Set default value of DSCP is 0, which is 'Best Effort'. https://www.cisco.com/c/en/us/support/docs/quality-of-service-qos/qos-packet-marking/10103-dscpvalues.html
upvoted 2 times
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mr_warrior
7 months, 4 weeks ago
Selected Answer: A
definitely A
upvoted 2 times
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DUsoo
8 months, 3 weeks ago
Selected Answer: A
A is correct
upvoted 2 times
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ccie_race
1 year ago
Option A is correct Default value of DSCP is 'Best Effort' which has value of '0' https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/4_0/qos/configuration/guide/nexus1000v_qos/qos_6dscp_val.pdf
upvoted 3 times
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elroy909
2 years ago
Correct answer is A
upvoted 2 times
jefranca
2 years ago
Yes, it's A, coz all remaining traffic must be marked with a DSCP value of 0, and this is default and not af10
upvoted 1 times
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