Which two parameters are examples of a QoS traffic descriptor?(Choose two.)

A. packet size
B. ToS
C. bandwidth
D. MPLS EXP bits
E. DSCP

Which two parameters are examples of a QoS traffic descriptor?(Choose two.)

A. packet size
B. ToS
C. bandwidth
D. MPLS EXP bits
E. DSCP

Correct Answer: BE

QoS classification usually uses traffic descriptors as criteria, which include:

Internal – QoS group
Layer 1 – Physical interface
Layer 2 – 802.1Q/p Class of Service (CoS) bits and MAC addresses
Layer 2.5 – MPLS Experimental (EXP) bits
Layer 3 – Differentiated Services Code Point (DSCP) value, IP Precedence value (IPP), and source and destination IP addresses
Layer 4 – TCP and UDP ports
Layer 7 – Next Generation Network-Based Application Recognition (NBAR2)