Exam 300-070 Question id=3581 QoS Model

Which three descriptions are true?

A. The class of service is a parameter that is used for traffic classification and marking at Layer 2.
B. The IP precedence is a parameter that is used for traffic classification and marking at Layer 2.
C. The differentiated services code point is a parameter that is used for traffic classification and marking at Layer 2.
D. The class of service is a parameter that is used for traffic classification and marking at Layer 3.
E. The IP precedence is a parameter that is used for traffic classification and marking at Layer 3.
F. The differentiated services code point is a parameter that is used for traffic classification and marking at Layer 3.

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