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…

Question

Options

• Apolicy-map cpe-mgmt-policy
• Bpolicy-map cpe-mgmt-policy
• Cpolicy-map cpe-mgmt-policy
• Dpolicy-map cpe-mgmt-policy

• A
  70% (19)
• B
  19% (5)
• C
  4% (1)
• D
  7% (2)

Explanation

The requirements specify three marking rules: management protocols marked AF21, monitoring protocols marked AF11, and all other traffic marked DSCP 0 (best effort). AF DSCP values follow the formula AF(x)(y) where x is the class and y is the drop precedence (1=low, 2=medium, 3=high). AF class 2 with low drop probability = AF21 (DSCP decimal 18). AF class 1 with low drop probability = AF11 (DSCP decimal 10). The correct policy-map (option A) uses class-maps to match management and monitoring protocols separately, applies 'set dscp af21' to management traffic, 'set dscp af11' to monitoring traffic, and uses a class-default section with 'set dscp 0' for all remaining traffic. The other options (B, C, D) differ in their class-map matching logic or DSCP marking assignments and do not correctly satisfy all three requirements simultaneously.

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